Sbc heads flow numbers

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5001 74 1971-73: 330862 Check pushrod clearance with heads placed on the block before final assembly. The industry’s most popular true high performance cast iron cylinder head has been continuously improved since its introduction over 20 years ago. The shrouding on the 291 heads really hurts the flow, it really surprised me. This negates the need for custom blocks and unusual cam cores. 400" area and compare the heads there. Cylinder heads involve a lot more than just rocker arm ratios and valve spring installed heights. Yes, flow numbers make horsepower, but you have to keep in mind how the flow numbers were determined on a flow bench. Casting number "462" fuelie heads. Mills - Flat or angle mills could affect flow numbers and might require a   The largest growing portion of the small-block Chevy head market has to be the What we really want to look at is each cylinder head's port flow numbers  For example: Lets take a head that flows a maximum of 300CFM. If you hog out the intake ports and shove the valve open far enough, many heads can deliver impressive flow numbers. Pipe, N/A Chevy 461 Ported Creative Flow Management Iron, N/A, 2. 1988 is identified by "8X8. com site are generated at 25" H20, which is not a standard test pressure. Whether you race Pro Stock, Super Comp, or just want to rebuild your old Chevy 350 small block, there are cylinder heads just for you! Performance cylinder heads enhance the airflow into your engine, giving you improved power and torque. AFR vs. 02/1. Gasket, JEGS 555-  AFR 190cc SBC Street Cylinder Head The exceptional flow characteristics, ideal operating range of idle to 5500 rpm 190cc SBC Street Head Part Numbers. The overall average flow numbers on the NKB-200 heads are higher than most any brand of non cnc'd cast aluminum heads on the market. 2 drag head to be the most powerful drag race SB2. The casting number is 3973487. The "power pack" heads have 58 CC combustion chambers, and smaller valves than later heads. Small Block Chevy Cylinder Heads: As you may already be aware, there are is a dizzying number of cylinder heads available for the Chevrolet smallblock. All other Trick Flow The Summit 170cc cylinder heads do not come predrilled with the steam holes required for the 400 c. Trick Flow offers the DHC head in both styles. Flow Specs @ 28″ w/2. 900 Exhaust Valve. 800 329 cfm . 25-inch intake openings on the Super 23 Race CNC Cylinder Heads. Flow numbers will vary from bench to bench. RFD SB2. 3927 186: HEAD MARKING These heads with 1 BuyAFR AFR SBC 195cc Street Heads ***Eliminator Series*** [1034] - AFR 195cc SBC Eliminator Street Cylinder Head The Ultimate Bolt-on Emissions Legal Street Weapon Click to enlarge The AFR Emissions Legal (versions from 1969-94 with heat riser, CARB EO #D-250-2), 195cc intake port small block Chevy cylinder heads are available in your choice of straight or L98 angle plug versions. So with a hydraulic roller PROMAXX Performance Products specializes in all types of automotive cylinder head for any budget, carrying Performance cylinder heads, diesel cylinder heads and stock replacement cylinder heads. We can customize these specifications and components to your application, just give us a call at 812-576-2371. Does anybody know anything about these dinosaurs? A Small Block Chevy tech site with Block casting numbers, Cylinder head casting numbers and much more information. FLOW NUMBERS . 7" rods. Myvintageiron7512 223,676 views. 02" Intake Valve and 1. the second heads, they flow about 152 cfm through the intake valve and 93. 16:43. 94/1. While these heads are not available new from Chevrolet, we have a good supply. How our heads stack up. straight plug only. With high-flow ports and standard intake valves, Motown 220 heads are the ideal complement to large displacement Small Blocks (383 ci and larger). Casting # Years made Valve Size HP levels used for Chamber Size / Notes; 3782461: 61-70: 1. These heads were used on trucks as well as the low compression performance engines. "except little higher lo lift flow" HOW TO VIDEO: The truth about cylinder heads and flow numbers! In this video, Brian Tooley Racing goes over why bigger isn't always better when it comes to the size of your cylinder heads. the CNC AP 268 18 degree from Brodix flow in the 395 range almost out of the box, and there only 268 CC int runners not big sewer pipes in the 310+ range like some other heads so you have great torque and HP numbers all the way through the RPM range, they were designed for oval track but make preety good drag heads, I've seen 358 for oval track cars Trick Flow ® Super 23 ® 175, Fast as Cast ® Assembled Cylinder Heads for V8 SBC 87-95, 56cc, 1. 620". i have a set of 615x gm heads and would like to know if you guys have done these heads be for? and if so what kind of numbers did you guys get? they have 2. 035/1. Each Notes: P. Check the cam lobe lift on the problem cylinder before getting into any serious head rebuilding or swapping. Since 1938, Edelbrock has manufactured its core products in the USA for quality & performance. The flow numbers speak for themselves. The 180 has a max lift of . Newly designed exhaust ports that flow extremely well with smaller valve diameters makes these heads a great choice for various engine combinations. I would diffinently go with the vortec heads because they have much better low lift numbers. RFD 15 Degree "Monster" The RFD15 is the most bad azz 15º head available for big inch small blocks. 6 valves. Brodix Ik 180 or 200cc heads -As cast Bare pair $880 -Assembled $1200. 90 Ported & Polished SBC Dart Iron Eagle Platinum 215 CC Cylinder Heads 1. SBC 180cc – View More Details SBC 200cc – View More Details SBC 220cc – View More Details BBC 290cc – View More Details BBC 315cc – View More Details BBC 320cc – View More Details BBC 360cc/133cc – View More Details BBC 360cc/121cc – View More Details BBC 375cc/127cc – View More Details BBC […] Airflow Numbers. Chevy 292 Ported MadCap Racing Heads SF600 Iron, 194/-, 2. 200, 142, 90 . The thing that everyone needs to realize is the actual absence of multiple flow numbers on these types of heads. They could have come with either 1. We haven't offered these heads, or any kind of heads, since about 1994-95. ” Air-flow in the Vortec heads begin to decrease between . 60. Small Block Chevy Cylinder Head Identification. 130 bore,3000 lbs. 02's and don't have the unshrouding cut done, they'll flow less air than the 1. Some of the heads with large flows and big runners are not going to be good street heads, since they will have slow flow through the runners at street rpm. 62 final on a 3/8 track turning 6200 or so with a crane saturday night special hydraulic cam, it was plenty of motor. 1101 W. Dart has recently released some new heads SHP 180cc and 200cc. We have spent the past two years designing and testing these heads. Trick Flow Specialties has several small-block cylinder heads available, including the Super 23 street/strip cylinder head. Hard to beat those AFR's. 60 4. Available in 3 stages of performance. '12. AFR Aluminum Heads - SBC PitStopUSA. Changing to AFR heads and another cam netted about 458RWHP and 530rwtq peak numbers and peak torque at 4900 and peak hp at 6000. i. YEARS: CASTING# CID: Intake : Exhaust: CC : COMMENTS: 1971-75: 330545 : 307,350 : 1. 500, 350, 225 . With basic porting you can gain about 10cfm intake and 10 exhaust. 195cc Aluminum SBC Street Cylinder Heads . FLOTEK is a leading brand of aluminum high-performance cylinder heads. 020/1. These Pro Comp Cylinder Heads have a thick Deck Design and High Capacity water jackets that makes them a reliable choice for street or strip applications. The reason is that there are just too many good aftermarket heads available today, and many flow better numbers right out of the box, untouched, than the best "race heads" used to! Like all CFE heads the 15 degree SBC utilizes CNC port technology derived from more than 25 years of successful racing experiences and our relentless pursuit of horsepower through R&D. March 14th, 2015, 03:29 PM The thing that gets me is the difference in heads between a SBC 400 and a BBC 402, both basically have the same bore and stroke, but when you look at the stock big block head it is bigger than some of the biggest small block heads that are available today. 550" double springs available This head is reocmmended for Maximum Performance & Full Competition, Heads-Up & Super Classes, over 7000 rpm, 400+ ciDART PRO 1 aluminum cylinder heads for small-block V8’s deliver advanced airflow The port was designed to match the 1. John, I'm leaning real hard toward having them send me a set of the bare 210cc heads. These must be a new design because the ones I have seen before looked like crap. 125 valve . 60" valves, had 64CC combustion chambers, DO NOT have accessory holes, intake port volume should be 161CC's, exhaust port volume should be 65CC's. Heads are priced at 465. 600" Lift (28" H20), 213 CFM @ 0. 2L fully built bottom end and has forged pistons/rods balanced crank. A cam in the 500 lift range on up to around 600 lift would be a very good match for these heads. Manufacturer of high performance cylinder heads and manifolds for ford and chevy EQ CYLINDER HEADS: FLOW NUMBERS EQ strictly by the numbers. Keep that in mind when looking at the numbers. 474” / . I don't doubt the flow numbers you got and doubt they would have moved that much air factory fresh. Cylinder Head Flow Data @ 28 Inches of Water Those were those Chinese heads that were being sold as an Australian product at Chinese prices. That is something I was not expecting. Dart offers two iron street heads for small-block Chevys; the Iron Eagle that comes in various port sizes and the Iron Eagle S/S that is smaller, but still outperforms factory replacement heads. The reward was even more power—565 horsepower at 6,800 rpm, a gain of over five percent with a simple induction change. 00 each complete,64cc or 72cc chamber. Although, I'm a little skeptical of the flow numbers I've seen. 400, 298, 188 . I'll try to post Have you been searching for a high-flow cylinder head that you can bolt onto your car that will help take it from fun to extreme? AFR has something for you! With their new SBC 245NPP heads, you can run common headers and intake manifolds all while pushing 700hp with the right set up. 283cfm @ . They can be quite confusing. Rialto, CA 92376, USA 909 605 1123. 2 heads is built with a budget in mind, using a chain drive, iron block and stainless-steel valves. Look into the . World uses two dating systems, the first is two numbers separated by an "X," with the numbers representing the last two digits of the casting year. And while it is definitely true that many of the newer heads are really superior in design and application, a few of us oldsters still like some of the nostalgic stuff. - SBC Cylinder Head Info - I've compiled the following information on SBC Cylinder heads to help compare them. Brodix offers the Track 1 Series Small Block Chevy Aluminum Cylinder Heads in a variety of configurations that are ready to bolt-on and Dominate! The Track 1 cylinder head has a 221cc intake port and a 64 or 67cc combustion chamber. For the record the customer bought these assembled on ebay for $630 for the pair. If you don't see what you are looking for on the website, give us a call at (812)-576-2371 . 840 bore spacing AFR 190cc SBC Street Cylinder Head The Small Port, High Velocity Torque Monster. The L31 Vortec cylinder heads represented a major design change in Gen I SBC heads. Home; Cylinder Heads → Cylinder Heads → Aluminum & Iron Cylinder Heads A High-Performance Tradition If you were a performance enthusiast looking for cylinder heads prior to 1987, your choices were limited to scrounging through junkyards, going to a dealership for OEM parts, or spending a small fortune on aftermarket aluminum racing heads. 72 : 1. The Latest in State of the Art Cylinder Heads and Intake Manifolds for Racing and Street Performance Pro-Filer / Wilson SBC The All New Pro-Filer / Wilson Small Block Single Plane Intake features Cast Fuel Injection Bosses and perfect runner to plenum volume. 650. Consistant flow numbers of custom racing cylinder heads and intake manifolds keep us on top of the competition, racing, truck pulling, performance and off road. Anything from street engines to a serious heads power application. The team has shared all the finest moments in the numerous accolades for its people, its products, and its approach. " The other is used on S/R Chevrolet heads for Chevrolet engines, where "AV8," indicates January 1998. Edelbrock Performance Cylinder heads are manufactured of A356 aluminum and made in the USA for AMC, Buick, Chevy, Chrysler, Ford, Oldsmobile, & Pontiac engines. They were used between 1962-1968 on various HP versions of 302, 327, or 350 engines. Rebuilt Sbc 305 Ho # 601 Chevy V-8 Cylinder Heads Chevrolet # 14022601 : $395 Up for sale is a professionally rebuilt pair of date matched Small Block Chevy 305 HO cylinder heads. 300 209 cfm . 120" thick-wall pushrods. Here at Butler Performance we try and give you the knowledge to distinguish the head types Most cylinder heads are identified in a general sense from simply looking at them . Sportsman Ii (w/Pro Flow Valves) Next, we threw in a pair of the Pro Flow intake and exhaust valves in the Sportsman II head to test them against the performance we had just documented from the straight-stemmed Race Master units (Chart B). Valves have a 3 angle performance cut on them as do the seats on the heads. The flow numbers provide solid information on the power potential offered by the cylinder heads. 120 intake and 1. A pair of bare used 305 heads with either our Performance Prep. The first double-hump heads had no accessory holes, because the brackets were mounted to the block or water pump. Wondering if it's apples to apples. When paired with engine size and intended use these flow well and make power I just flowed some Pro Comp heads this weekend and I am sharing the numbers. 450" valve lift INT. 5 2/23/16 Super 23 175 and 195 Cylinder Heads for the Small Block Chevrolet Thank you for purchasing Trick Flow Super 23 175 and 195 Small Block Chevrolet aluminum cylinder heads. The ports and chambers are virtually identical between 487 and 487X. After completing the intake swap, Trick Flow put the hammer down on the 388. While creating the 100% CNC Ported MAXX series, Many long hours on the flow bench were invested for one of the best flowing out-of-the-box cylinder heads available at the best price. Topped off with BRODIX Cylinder Heads BR 7 273 6 bolt heads, MSD Performance intake manifold, Halltech Systems, LLC cold air intake. Every head is ported to the customers needs which doesn't neccessarily give you the most flow out of the heads. 2. Our modified 305 heads start as quality, pressure tested and magnifluxed castings. 5001 - 1971-76: 333881 : 350 ported & polished sbc dart iron eagle platinum 215cc cylinder heads - $1,305. This head has produced over 550 hp on pump gas and mild cam . In the flowchart above, the NKB-200s are superior to the Procomp heads in flow numbers, and also edge out the Dart SHP heads on the intake side. 400 lift. NOTE: These heads fit all OEM bolt pattern manifolds EXCEPT YEARS 1987 to 1995. 500-inch and . 250 cfm at . Dart vs. Our stage 1 porting service will include the re-use of the stock vales. The 882's flows 206 cfm intake and 145 cfm exhaust. SBC Bare STRAIGHT PLUG Aluminum Heads 64cc Chamber, 200cc runner ** These 200cc runner heads have made 30 hp OVER ANY of the 210cc heads we have tested in this same price bracket** These heads feature Hardened Seats Bronze Valve Guides High Grade All Pro Heads is the Industry Leader in Small Block Chevy Aluminum Cylinder Heads, (as well as the new Generation 3 and Mopar W9RP) , catering to the hard core racer always looking for the perfect design for a specific application. 50 valves. d. com - AFR Aluminum Heads - SBC AFR is reviving its popular 220cc moniker due to overwhelming request from customers for a larger bolt on standard valve location head. Year. World Products has been producing affordable high performance cast iron engine blocks and cylinder heads for over twenty five years, beginning in 1987 with a pioneering Small Block Chevrolet cylinder head and continually expanding the line to become a leading aftermarket manufacturer. Int, 155, 210, 260, 295, 304, 312, 318. No idea what they flow but they look reasonable. This allows us to be in a continual state of improvement without sacrificing anyone’s heads. 383. LS6 heads are the best BuyAFR AFR SBC 180cc Street Heads ***Eliminator Series*** [0911] - AFR's new Eliminator Series 180's are now Available! Features include: Lightweight AFR LS1 Style Valvetrain - 40 Grams of reduced mass where it matters most! 400 rpm dyno test improvement before valve float! The point of all this is that far too many guys go out and blow big bux on big bump sticks and high dollar heads and all they end up with is an under performing, fuel hungry engine with bad street manners and a whopper of a credit card bill. 27 Dec 2017 Spec sheet for the Dart Eagle S/S Vortec SBC Iron Cylinder Head. Click on the header to sort. I got a pretty go deal on them and am thinking I might put together another motor with spare parts. 50 & 2. The "041" heads compare favorably but the '96 to '01 GM L-31 5. 039 head gasket as my block is decked to . 5001 : 74 : 1971-73: 330862 : 400 : 1. Flow numbers on 4. Small block chevy head castings; reverse flow, 175 intake ports, 68 cc exhaust ports Double hump heads, no accessory holes 172 intake runners: For performance applications, there are other GM castings that are similar in specs. The theory is that high swirl numbers (rpms) offer better fuel distribution and increase combustion chamber burning efficiency. C Automotive also offers early 289, early 302, E7, and 351 W heads. Thanks Jim. The 10088113 Corvette Aluminum Heads have the standard intake bolt layout. the motor is 3. com or the September 2012 issue of Car We also flow-tested all the heads, see the Best Small Block Chevy  I've compiled the following information on SBC Cylinder heads to help compare them. The flow data shown at right shows a comparison between out of the box Edelbrock heads and factory Ford 428 Cobra Jet heads. . 2. 94's did. I have to go with Buzz on this, when I was a teenager it didn't get more high tech than "double-humps" as computer and flow benches increased in quantity and quality it was found these weren't as magical as thought, even before that I know the big names like Grumpy was doing so much work on them to make them work they didn't even resemble 'hump-heads' anymore. If necessary, the steam holes can be drilled into the cylinder heads by a competent machinist. Flow Rate , 263 CFM @ 0. All flow numbers for DRD Racing Heads come from their Web Site updated Aug. 100, 71, 42 . 4L 2V SBC 230cc CNC ported Cylinder Heads. BB Spread Port Conversion Kits 555-632. The stock heads, as well as the GT40X head, had high swirl numbers. A customer brought these in today for flow testing, I thought you guys would like the numbers Flow numbers AFR 235cc intake runner 70cc chamber tested on a 4. For the flow . The port was designed to match the 1. The number that Smokey came up with was 28 inches of water. 00. 500" Intake Valve 1. Good flow numbers n/a are still good flow numbers blown, aren't they? Re: The Great American SBC Cylinder Head Debate. 550-inch valve lift. 550 . The Sportsman II heads from World are their cast iron racing cylinder head which will have  Need to know how our numbers compare against the competition? We provide you with the following extensive list of cylinder head flow numbers to help you  BES / TFS SBC 18° Heads - Flow Numbers. We have a variety of used 305 heads – ‘601, ‘450 & ‘416 casting numbers – available. The lower the lift at which that number is reached, the better the port design. Flow data listed on the www. 94-inch valves. Cylinder Head ID. We first started with the structure of the head. ssce profiler 12° spread port big block chevy heads - 4. Pricing Includes Valve Job. When comparing head flow numbers, make sure you're working with  31 Mar 2015 Many novice Chevy big-block engine builders see the big The flow numbers and dyno results of numerous head tests indicate that the best  Recent tests show the RFD SB2. Kit includes: Dart Big Chief or Pro-FIler Intake, Dart Big Chief 14° & 18°, Big Duke 18° or Pro Filer 12° Heads, Jessel Shaft Rockers, Aluminum Sheet Metal Valve Covers, Cyl Head Stud Set, Wiseco / JE Pistons, Speed Pro Rings, Clevite Bearings, Custom Ground Camshaft (4/7 swap), Comp Cams Lifter Set, . For street stock with cast iron manifolds they are very good heads. However, as the data shows, some of the best performing heads in terms of flow, had seemingly poor or inconsistant swirl numbers. The later 60 cc chamber heads probably flow the best, I figure a valve job would make up the little difference with the 090 heads. Lets look at the flow numbers. 02 intake and 1. BRODIX recommends this head be installed on a 400 cu in or larger engine. 03 220cc Race Ready Head Flow Chart . Remember you don't need a heads that flow great at . Up for sale is a professionally rebuilt pair of Small Block Chevy 2. $700 is for one bare unported SPEC head. The AIR Wolf will be offered in two sizes a 220cc intake runner and a 245cc . TFS: How to Narrow a Ford 8. Larger pushrods will not fit without clearancing and is not recommended since some areas are very thin. 5 and i got exactly the same flow numbers with std valves 3-angle job, cleanin up tunners and valve back cut 30dec. The pin is too low in the piston, and it will stick "out". Went through the same thing and ended up selling them with the motor to a friend. Hello everyone I would like you guys to be the first to now about the New Pro Filer CNC ported AIR WOLF sbc cylinder head, developed by Dr J's Performance and Speier Racing Heads. From blown to boosted, from sprayed to naturally aspirated the CFE 15 degree head is an excellent choice for all serious small block competitors. 080 Chome Moly Pushrods, Complete Gasket Set Both are pretty useless in a performance engine build, both are large chamber smogger heads that will drop your compression down aot and don't flow well. SBC, and I agree when you compare GM OEM 23 degree SBC heads to GM OEM LS heads, BUT the advantage of the lower valve angle in LS heads and the idea that SBC heads can’t be made to flow like LS heads, and therefore able to produce similar power numbers with the same duration cams seems to be incorrect when tested. The flow numbers indicate even more potential with these heads, since the flow numbers peak at 0. Pro Comp Aluminum Cylinder Heads are a great choice for an out of the box horse power upgrade for your Small Block Chevy. All too often, the only thing people look at are flow numbers. Hand Ported - IK 195cc 2. 200 137 CFM 110 CFM Pontiac SBC heads by Jerry » Thu Jun 26, 2008 10:47 pm Just wondering If any knows anything about these heads. Mills - Flat or angle mills could affect flow numbers and might require a thicker intake gasket. TREperformance sells new AFR 220cc Eliminator 220 cc aluminum cylinder heads from Air Flow Research for almost any Chevy vehicle including the Camaro and Corvette, or any other L98 FBody 350, 383, 400, or 434 SBC, part #1065. Shafiroff and SB2. 94 / 1. AD Performance DART Pro 1 230cc 23 degree Aluminum Head [11710040] - DART PRO 1 230cc Aluminum Cylinder Heads230cc runner64 or 72 cc ChamberStraight or Angle Plug1. PRO1 23° 230cc Platinum series heads are intended for maximum effort competition engines with large displacements and very high RPM usage. So, our "stock flow" is an example of stock flow. car ,just some imfo. The fatter the bell the better. As our motto says “When Only The Best Will Do”. While we all want heads that flow Last issue we examined the intake side of Brodix’s latest BR 7 series of cylinder heads (designed to fit Chevy’s LS-series engines). All flow numbers for Darin Morgan heads come from Darin Morgan Web Site updated Oct. *2 -- These flow numbers come from Pace GM Parts. 005 I think that will be ok for the street. 5 exhaust. A big block Chevy (BBC) or small block Chevy (SBC) head is readily recognized by Early on, there was much made of the supposed difference in flow between the. 35 Min. 155 bore fixture Intake 2. 150in 1. If for any reason you purchase a set of heads from SRH, or have yours ported, and they don't perform like we discuss, send them back and I will work on them until they do, free! Or trade back and put you in a different set! Better than any flow data guarantee! Speier Racing Heads now has in-house wet flow capabilities! Below is the flow chart on for the AFR 210cc heads. For 355-400 engines especially suited for 4. 300 . 500-550hp capable on a 383 $1700 assembled for Hydraulic Roller up to . Chevy Performance offers several small block engine cylinder heads to The heads provide outstanding low-lift flow numbers (the more air you flow, the more   They certainly aren't going to open your eyes on flow numbers. No, 400 pistons won't work with 5. Airflow Numbers. AFR INTAKE AFR EXHAUST . Edelbrock is the most respected name in performance. Anyone else you can think of (BBC Heads) Discussion in 'LS1, LS2, LS6, LT1, SBC Turbo and other GM Specfic Turbo Tech' started by Koll, Oct 26, 2006. 550 Dual Spring, w/max lift of 690 lift. Thanks for the help John. Nothing can be done to those heads to improve their flow numbers enough to justify the work done to them. Call For Pricing Re: wht are the flow and cc on 487X heads? 12-09-04 07:52 AM - Post# 569497 In response to STROKER59 There's nothing special about the "X" version. For over 40 years Chevrolet has developed heads for all types of uses, including stock, high-performance, smog emissions and over-the-counter all-out race heads. Since their introducion in 1987, the World Products Sportsman II cylinder heads can be found on many street/strip engines and all-out racing cars. Exh, 116, 162, 204, 220, 225, 229, 233  Heads from Dart, EQ, and RHS can make big horsepower numbers right out of . Our precision cast ports and chambers produce outstanding air flow without time consuming porting. With machining costs to rebuild stock heads increasing all the time, this S/R Torquer is a great alternative to rebuilding stock heads, with improved flow being an additional reason to decide on The -11X may be purchased with a standard or spread exhaust port. at the combustion chamber design on Trick Flow big block Chevy heads. SPEC heads are also available for DIRT, USMTS/USRA, SAS and NLMS. 300, 229, 145 . Trick Flow Twisted Wedge Alm ( by part number ) SBC ProComp Aluminum Cylinder Heads 190 Runner Bare - Item # PCM 3002. They were used on high-performance models of the 265 and 283 engines, and were also used on the standard 195-horse 2-barrel 283's in the later years of that engine. 24 May 2016 It represented, for me, 50 years of cylinder head porting and flow testing. The fact that they ( AFR ) makes several sizes of the more racy configuration ( 220, 227, 235, and 245 runners ) I have seen guys spend much more money on cylinder heads that did not run as well as the The port volume will depend on the size of the valve and length of the port, but the stock exhaust port volume and valve size can be used as a reference point for comparing aftermarket heads to stock heads. guideplates, and valve stem seals included on assembled Trick Flow Specialties cylinder heads are warranted to the original purchaser to be free from defects in materials and workmanship for a period of two years from the date of purchase. Flow numbers are from the Dart website. This information has been gathered from several sources and has not been verified Vortec heads come equipped with valves having a 30 degree back cut to help flow. 200 144 cfm . AFR Eliminator Series SBC 195's! AFR 195 SBC ELIMINATOR STREET. 500 290 cfm . Because we flow every pair of heads that leave the shop our quality control allows us to make the statement that our heads repeatedly flow the best possible numbers for the heads being processed. Castings and Valvetrain Additional. All valve lift is measured in Inches. One of the most powerful heads for single carb applications, we've been building SB2. Re: FlowBench numbers on various SBC heads 07-03-02 09:24 PM - Post# 113472 In response to MaxRaceSoftware 68corvette ; i've #291 1. 75 stroke 4. Dart Iron Eagle S/S 23° 165cc heads produce great throttle response and low to mid-range torque for street performance engines. We can also modify your open chamber heads. I am just wondering about flow of the heads I don't know much about flow numbers. Actually, there are four part numbers for this cylinder head. I HAVE A SET OF CHEVY SMALL BLOCK 14102193 CASTING CYLINDER HEADS, WHAT CC AND WOULD THESE HEADS FLOW DESCENT AT ALL - Answered by a verified Chevy Mechanic I built this project primarily to show that you can NOT make big power using the poor flowing TBI heads. Manufacturer Part Number: Port/Vol Int/Exh: Valve Size Int/Exh: Comb. TFS-DP-8 Rev. 030bore no exhaust pipe: Intake Airflow Numbers. Geo Storm and Isuzu Impulse performance parts. Founded in 2007, we offer an extensive selection of cylinder heads for Ford, Chevrolet, and GMC performance engines. Flow data based on Cylinder #1 intake and exhaust port. TYPICAL FLOW NUMBERS FOR FULLY PORTED HEADS Flow numbers will vary slightly from one casting to another of the same model. Maximum performance/full competition, unlimited oval and super classes. The Complete Cylinder Head Guide for Chevy Small Block Engines A factor more influential toward successful high-performance engine building than any other is the cylinder heads. ) But more important than that is flow at all levels and particularly low lift flow. i ran a set of 416's pretty much stock i even kept the small valves in em. Trick Flow port-matched the manifold to the 2. 50" or 2. Round Port There are many questions regarding the types of Edelbrock Aluminum Pontiac Heads. 60ex tit valaes. Theseheads are highly recommended for use on SBC 350, 383, and 400/406 engines. 7L Vortec heads are in much greater supply, still available from GM and flow better than even the best double-hump heads. 02 slant plug heads I bought when I bult my small block in 1972. Look here for head flow figures. 64,68, or 71cc chambers available. A great head for many forms of racing, including: Comp Elim, Fast Bracket, Boat, Truck Pull, Road Race, GT1 and of course, Circle Track. I have seen flow numbers on ported 487x heads that would blow your mind! (over $1200 for porting alone) Personally I accept the 487X head as the 441's equal, have seen the numbers to support this. From the intake perspective, the BR7’s are over the top when it comes to air flow capabilities – so much so that they pretty much eclipse all original Chevrolet big block production line castings. 550 offset rocker. CNC Combustion Chamber. News that Trick Flow will re-engineer the classic small-block Chevy “double-hump” or “camel-back” cylinder heads in cast aluminum is reviving interest in the original Gen I platform, and is stirring up memories of great engines that were built with those heads. 60 exhaust valves. Designed from the ground up as a large cubic inch head with matching cast 4 intakes available the Monster is capable of 900+ hp with a single 4 And well over 1,000 hp with Nitrous. 600" Lift (28" H20). Out of those 2 though, the 882's are the better ones. Find BluePrint Engines Muscle Series Cylinder Heads H8002K and get Free Shipping on Orders Over $99 at Summit Racing! Welcome to a new class of high performance cylinder heads--BluePrint Muscle series! These aluminum heads are assembled with the perfect match of components for outstanding, trouble-free performance. They work in most applications and are a big bump in power on most any stock headed small block. 030 bore. I have read some flow numbers on the Internet regarding the 882's, and I have a hard time believing some of the flow numbers people are posting on these particular castings. SBC Head Casting Numbers. 23 Mount Erin Rd, Blair Athol NSW 2560, Australia 02 9607 2299 Re: What blower heads for a sbc? flow numbers are based on a pressure differential. 248cfm @ . 600" lift. The Maxx 200 is the ultimate “as cast” head available that produces CNC type flow number, flowing over 280cfm. In this chapter I discuss formulas for converting combustion chamber volumes, exhaust to intake ratios, valve curtain area, port crosssectional area, and various other factors that affect the performance potential of any cylinder head. That is why the Pro Elite heads are designed for stock-style valvetrain components. Since it is almost impossible to compare the flow numbers from different flow benches I have started this page to show you how much cfm gain I have gotten out of the heads I have ported. sbc 400 heads Chevrolet Classics Car Forums . NOTE: All flow testing is done @ 25in hg pressure. Casting number 3890462 heads with 64cc chambers and 2. As measured on the flow bench, the airflow numbers indicate only the flow potential of the port. Intake Flow Numbers. II LT1, reverse flow cooling, 175/68cc port volumes. 600-inch lift and our cam barely cleared the 0. Interesting stuff, I'm not answering the phone in case they want the flowbench back. 500 . Part Number, Port/Vol Int/Exh, Valve Size . The intake numbers are far more important than the exhaust. I have a set that have 1. 64CC Combustion Chambers improve performance and retains stock compression on 1970 and earlier small-blocks. The build quality exceeds that of all low cost aluminum heads on the market. Vortec Bowtie cylinder heads come with large valves, a thick deck surface and 66-cc combustion chambers. These heads are made in the same style as the Edlebrock Victor cylinder heads. thinner castings and are prone to cracking as well. Updated as of 06/14/2017 DYNO RESULTS – CAM . 940” or 2. With the Vortec flow velocity, you need less spark advance to make power which is a clear indication of a more efficient burn. You can have a killer camshaft, valvetrain, intake manifold, carb, and headers, but if you bolt ‘em to a weak set of heads, you won’t make power. Most buy heads based on peak claimed flow at some valve lift (ie. Edelbrock Aluminum Heads- D-Port vs. 700 323 cfm . Guaranteed lowest price! Part Number: 555-514002. The heads provide outstanding low-lift flow numbers (the more air you flow, the more potential power) and Fast Burn performance all in an affordable, cast-iron head. Trick Flow products perform as advertised and exceed customer's expectations for performance and value. CNC ported Survival heads, CNC ported BBM heads, CNC ported Edelbrocks, ported HR heads, ported TP heads, and ported BT heads. TFS will have to prove themselves to me. The casting quality is as good as the best aftermarket iron heads, and its flow  195cc SBC Street Cylinder Head . 650 Holly […] Air Flow Detail #176 SBC All American Head - 195cc Runner. 600 lift. 350 CHEVY HEADS BEST AND WORST PART 2 - Duration: 16:43. 7,000+ RPM, 400+ cubic inch engines. Independent flow testing SBC CNC Ported Cylinder heads. The Cobra Jet heads have been given a minor bowl clean-up, but are otherwise stock. 462 is the most-used SBC head casting number out there- at least six different SBC cylinder head casting numbers end in 462, according to 'the books': 3767462 3782462 3814462 3890462 3891462 3990462 Today, life is a bit easier! Trick Flow® GM LS engine steam line fittings are available to upgrade the factory steam tubes of your modified LS-powered cars and trucks to update your race car plumbing system. S/R heads were first cast in 1990. All flow numbers for David Vizard heads come from Web Site updated April '08. Outstanding mid lift airflow numbers Incredible flow numbers, outstanding quality. These air flow improvements have gained over 22 horsepower on the dyno. 60" exhaust valve. 8/5. small block Chevrolet engines. my next question is what cam? The roller cam was way too big for the heads, even though the duration was 250/260, the sportsman 2 heads don't flow very well over . Ultimate Chevy Big-Inch Small-Block Cylinder Heads Cheat Sheet Now we get into the heart of small block power. They were supposed to be the hot setup back then but i think the newer heads flow much better than these do. Buy JEGS 514002 at JEGS: JEGS Cylinder Head Small Block Chevy. Best I can tell they're 23 degree. ACURA 1. It looks like you might pay a slight penalty in performance with the iron heads too, because the flow numbers look a little softer than aluminum. 94 intakes, 1. 08″/1. Don’t get us wrong, airflow numbers are a useful tool when choosing cylinder heads. As our company founder explains it, the results you experience with the AFR heads will vary greatly by what type setup you are running. 600, 380, 245. If you chart your flow at all valve lifts from open to close it looks like a bell graph (the line will be shaped like a bell). Well Dave, I guess you guessed right. Small Block Chevy Aluminum Cylinder Heads 200cc Intake Port * 64cc Chamber * 2. 8 Part 1 - Strip Down - Duration: 23:03. 650 exhaust. RHS designed these heads to flow big numbers without the need for crazy, exotic parts up top. 200 . 100 66 cfm . Later models were designed for use with accessory brackets that mount to the heads. 02 cylinder heads. Heads have been cleaned, wet mag'd, machined completely, and assembled. 2's for many years. 3/28/2011 Dart S/S 165 SBC Iron Cylinder Head Part# 10021010 – 10024370 Material: Superior iron alloy Comb Chambers: 67 or 76 Intake Valve Dia: 1. ATT: Engine Builders, Available without Valve Job. World Products Cast Iron Heads ( by part numbers ) 4351 67cc, 162cc intake port 4350 76cc, 162cc intake port 4205 58cc, 162cc intake port, 305 torquer 4256 67cc, 172cc intake port, torquer 4257 76cc, 172cc intake port, torquer. 500-inch-lift threshold. The new 245 NPP heads frow about 350 right out of the box, and are cappable of producing right at 900 HP on a very serious full race 434 engine. They use all the normal gaskets and bolt right up to any small block. 72 1. These heads have accessory SBC cast iron camel back performance heads. The first one is a set of 190cc Pro Comp heads with 2. With 200cc intake and 69cc exhaust ports, World’s Sportsman II cylinder heads offer 30-70 horsepower gains over OEM cast iron heads, yet are 50-state emissions legal. The numbers read something like this: 5/17. Over 30 years of racing experience and cylinder head and manifold development for Indy race cars. New set of Aluminum Small Block Chevy Pro Comp Motorsport Heads (2 heads) Advanced Port Design 59cc CNC Ported Dual Quench Combustion Chambers 210cc Intake Runners AVAILABLE IN ANGLE PLUG ONLY Bronze Valve Guides Premium Photo below is a 461 chamber with factory 2. powerheads. I was going to use a . These heads accept the same CNC program we use on the Edelbrock heads and produce similar flow numbers. SBC 205cc Bare Aluminum Cylinder Heads Straight Plug 64cc Small Block Chevy 350. We would like to thank everyone that has contributed to the data provided on this site. They could be used on any SBC block from 1955 through the end of the Vortec engine production because the mounting holes lined up properly and the water passages were the same as the cylinder heads from the past 40 years. 400 259 cfm . 400 . Heads have new stainless 2. 600 - 72cc - 23 Degree "All American" Aluminum Cylinder Heads - ANGLE PLUG - Bare I have a set of GM 292 casting 2. I think the were called turbo heads back then. Although bypassed by modern designes, these casting can still deliver especially when some time has been spent on improving port and chamber design. 550 lift. Subject: 441 sb chevy heads: Reply: There are at LEAST 2 different head numbers that I could find that end with 441: 3923441- a 350 head used from 1967?-1976; and 3932441- used from 1967-1979 on 327s and 350s. 055/1. 550 lift because your cam will never get there. It’s the complete system and how it works. Aluminum, Gen. I had $1000 12yrs ago in my old 041 heads. 00 319 cfm 345 fps a center for pinch Do not expect to see monster flow numbers from these heads since they are budget pieces for a reason. Lots out there actually. These heads are 100% cnc ported hand finished utilizing features such as raise, oval-shaped intake ports that flow amazing cfm numbers. Although similar in appearance there are some conditions that the customers may not understand or be prepared to deal with when purchasing them. On the intake side, the advantage of the Pro Flow valves didnt kick in until 0. SBC Bare STRAIGHT PLUG Aluminum Heads 64cc Chamber, 200cc runner ** These 200cc runner heads have made 30 hp OVER ANY of the 210cc heads we have tested in this same price bracket** These heads feature Hardened Seats Bronze Valve Guides High Grade The CFE SBX lineup sports many improvements and features that were previously unavailable including a symmetrical intake port layout that favors two carburetors and allows the new CFE SBX racing heads to be used on a standard small block with conventional lifter bore locations. 110 x 1. but without the swirl-inducing vane are c/n's 14011083 and 14096217. I am using a 270 /278 @50 219/228 519/530 cam from Lunati. 23 Dec 2017 While there are aftermarket replacement heads for the SBC that offer Following are the Trick Flow part numbers for the four DHC 175  Buy online - World Products Cylinder Heads Cast Iron Chevy Small Block S/R Torquer Casting ID Number: I-052, I-058; Material: High density cast iron; Valve Seats: Intake World Products S/R TORQUER 170cc Iron Head Flow Data 15 Dec 2015 Simply put, flow bench numbers can provide a good idea about a . SPEC heads available for DIRT, USMTS/USRA, WISSOTA, SAS and NLMS. Interestingly, the Bow Tie heads flowed better than expected on the flow bench, but dyno numbers immediately puffed a longtime myth about the 327--although it freely pulled past 7,000 rpm, power Engine Build: LSX Iron Block from Chevrolet Performance bored to 440 is 7. Rialto Ave. These heads have big performance benefits for SBC motors such as 302, 327, 350, 383 & 400* Small Block Chevy Engines up to 1986. 900 327 cfm 1. 460" Springs, Sold Individually Made to outperform factory small block Chevy heads on 283-350 c. 2 Cylinder Heads Power Up Gen I SBC By Mike Magda February 08, 2017 The Shafiroff 440ci small-block with SB2. The heads are dated L20 & C281 (December 2, 1970 & March 28, 1971). These heads have outstanding features that include premium one-piece, stainless steel high flow valves, heat treated and machined steel retainers and valve locks, seals, bronze wall valve guides, 3 angle valve job, and heavy duty valve springs. Skip White Performance provides many high performance racing and engine products such as, stroker engines, turn-key engines, cylinder heads and pistons The Numbers Game. View Detail $ $ $, Dart 180cc SBC SHP Alum heads 72cc Complete SBC HEADS FLOW NUMBERS Trash Or Be Trashed. 8L TYPE R Stock valve size Stock: Ported: INT. made in usa . Naturally Aspirated build putting over 600 RWHP to the ground. 94" valves and have the heads machined for 2. Most flow numbers for DART heads were from DART or their Web Site updated Aug. These stock numbers can be found online for most engines, and flow numbers can be compared directly if valve sizes are the same. 3, LS1, LS6, LS2, LQ4/9) to us for porting. 510",while the 200 max lift is . 60 valves. 600 . Pro Filer Small Block Chevy All American Heads with 195cc Intake Runner, 2. 6 valves, showing the unshrouding cut adjacent to the intake valve; if you have 1. I have used lots of SBF TFS products and they are always about 20 cfm down when you flow them in comparison to advertised numbers. street performance engines, Trick Flow® Super 23® 175 cylinder heads feature small cross-section intake runners to promote low-rpm torque and The price listed is for you sending your cathedral port cylinder heads (4. 193 casting TBI head flow data ————Intake——-Exhaust The big peak flow numbers combine with things like average flow figures, port volume and shape, and even the valve job to produce a desirable head package. Small Block Chevy Heads . RHS is the leading developer of high performance cylinder heads, engine blocks, intake manifolds and related components for street performance and race engines Racing Head Service (RHS) JavaScript seems to be disabled in your browser. The fittings are black anodized billet aluminum and attach to the corners of your GM LS cylinder heads. Bill explained that they had performed a lot of testing early on with the 906 Vortec heads and were initially surprised at the flow numbers. Price: $5,950   Total Engine Airflow specializes in CNC-PORTED aluminum cylinder heads, custom cylinder head assemblies, and support Trick Flow® Valve Cover-Mount Ignition Systems for Ford 4. M&M Competition Engines is the leader in racing cylinder head porting, flow testing and intake porting services worldwide. Even the ''as cast'' heads utilize ultra-smooth new runner and chamber designs that produce ''CNC'd type'' flow numbers. What about flow. Flow measured at 28" of depression. PC3003A-59 SEE OUR EBAY STORE FOR LOTS MORE HEADS. It features the latest high tech 64cc chambers and RightCast® 220cc runners to produce a combination of excellent flow and high velocity. 800 Call for Flow Numbers. about my combo. . Some small block Chevy engines had problems with valve guides near the heat riser/EGR valve passages tightening up and causing premature cam lobe wear (also pushrod bending) due to hot spots caused by the constant flow of exhaust gas to the EGR valve. Description. Product Description. We talked with Bill Hendren at Hendren Racing Engines about the flow characteristics of the Vortec heads compared to the old style cast heads. Trick Flow Specialties is a leading designer and manufacturer of high performance cylinder heads, intake manifolds, and engine components. Doesn't matter what the absolute pressure is, there's still a pressure differential in a blown engine. i liked them. BES / Dart BBC Pro 1 Heads: Price: With several different intake runner sizes, we have a head that will fit any big block Chevy application. But that's not to say Freedom heads aren't right for your project. 6/5. SBC ProComp Aluminum Cylinder Heads 210 Runner Assembled - Item # PCM 3003C. The CHI 15 degree Small Block Chevy cylinder head is a rolled over version of our 18 degree head that uses all the same components ( valves manifold etc ) but with added advantage of a smaller combustion chamber (volumes in mid 40’s can be achieved ). See our Cylinder Heads - Quality Performance Aluminum Street Heads. I called them and they said the CNC heads would be ready in 5 or 6 weeks. 94 : 1. I like what I see. '09. Chamber Vol Airflow Numbers. We have truly worked toward optimizing the total cylinder head package all in one set of heads. 13 TFS Trick Flow Track Heat 225 CFM 250 CFM 310 CFM 330 CFM SBC Heads: kawasaki-ZX14R-ZX12R-ZX10R These heads were used during the '60s and '70s on various performance engines. 6: 250-375: 64 CC Chambers No bolt holes These are the double humps. Figure I can stall them a few more days. The exhaust port on these heads is rather weak in my humble opinion, and is not considered to be a good performance head. I did see the AFR heads had higher numbers and there 75cc heads would bring my SCR to 9:0-1 aprox. These Pro Comp Cylinder Heads have a thick Deck Design and High Capacity water jackets that makes them a reliable choice for street or strip I agree there’s plenty of reasons to go LS vs. 1971-75: 330545 307,350 1. 23-degree small- block Chevy head and flow test the exhaust port at 28 inches. We have many programs for a huge selection of domestic cylinder heads. World Products Cast Iron Heads ( by part numbers ) 4351 67cc, 162cc intake port 4350 76cc, 162cc intake port 4205 58cc, 162cc intake port, 305 torquer 4256 67cc, 172cc intake port, torquer 4257 76cc, 172cc intake port, torquer Trick Flow Twisted Wedge Alm ( by part number ) Dart 180cc SBC SHP Alum heads 64cc Complete Assembled Pair Hyd springs PN 127121 $ $ Price $ 1,177. Flow Comparison Between Factory 428 Cobra Jet Heads and Edelbrock FE Heads. $675 is for one bare unported SPEC head. Our “ Undercover Porting ” will improve the air flow of stock open chamber heads from 203 cfm intake and 142 cfm exhaust to 225 / 230 cfm intake and 160 cfm exhaust. CSA. 5-Axis CNC Porting of Intake and Exhaust Ports. If you choose to drill the steam holes, follow the instructions below: M&M Competition Engines provides a wide variety of SBC Small Block Chevrolet / Chevy cylinder head choices & are stocking distributors for the industries best cylinder head manufactures, AFR,BRODIX,DART,EDELBROCK,PROFILER,RHS,WORLD PRODUCTS Scorpion Products! : SBC Aluminum Heads - Air & Fuel Delivery Brake Systems Chassis, Steering & Suspension Cooling & Heating Engines & Components Exhaust Fittings & Hoses Gaskets & Seals Disc Brake Conversions Ignition & Electrical Interior & Accessories LS Performance Transmission & Drive Train Small Block Chevy Big Block Chevy 47-59 Chevrolet Trucks Comp Cams C10 Trucks auto parts, muscle 176-1972-03 - PBM Performance - SBC 195cc - 2. AFR recommends the use of . 020” Intake Port volume: 165cc Total Engine Airflow specializes in CNC-PORTED aluminum cylinder heads, custom cylinder head assemblies, and support components for GM, Ford, Mopar for street/strip, competition, and racing applications. 527 CFM at . purchased a pair of procomp heads(#3021c) for my 454 chevy big block engine. The charts below show the difference between stock flow numbers as well as the flow after our modifications are made. F-BIRD'88 got the highest flow numbers of the 083 heads listed but he also says himself that he got consistently higher flow numbers on similar heads, so I included it but I wouldn't assume that his numbers are as representative of the 083s since the other data (especially the alum heads) shows lower values. Chevy cylinder head Identification - Small block casting numbers, Big block cylinder head, camel back heads, double hump heads Now, $1,500 later, the guy clamped his freshly ported heads onto a flow bench in another shop to show off the awesome porting job. 8. 550 Spring Good up to 690 Lift Angle Plug These pair of ported & polished heads carry a 1. Our cylinder heads are cast according to FLOTEK design parameters and assembled and inspected at our facility in Evansville, Indiana. But there can be probelms here too. 60″ w/30* Backcut valves Small Block Chevy LS Cylinder Heads by Casting Number Stock Head Flow Numbers The exhaust port is a unique D -shape that improves flow. Chevy V8 SBC Block and Head Casting Numbers Chevy V8 BBC Block and Head Casting Numbers Chevy V8 "W" Motor 348-409 Casting Numbers Chevy V8 Crankshaft Casting Numbers Chevy V8 Crankshaft Journal Sizes Chevy V8 Bore and Stroke List Chevy V8 Notes SBC Crate Motors BBC Crate Motors SBC Cylinder Heads Holley Carb Information Holley Tuning Tips AFR SBC 195 Street Heads $1,585. 450" valve lift How to Build a Flow Bench for Port and Flow Testing Cylinder Heads – Part 3 January 15, 2015 by Muscle Car DiY May 2008 was something of a milestone for me as far as the modification of cylinder heads for more performance was concerned. Big flow numbers are not what makes a combo exceed all expectations. These casting were remarkably smooth. 510” LIFT Carb. Brodix Small Block Chevy SPEC cylinder head for Wissota Late Model Division. CALL SHANON AT 507 445 3235 WITH ANY QUESTIONS. 2 cfm through the exhaust valve stock 1. Unlike previous SBC valves, Vortec valves have just one groove for the keepers instead of two grooves (earlier valves had one groove for the keepers, the second (lower) groove was for the oil control O-ring); Vortec heads use a positive-type valve stem oil seal and TREperformance sells new AFR 245cc Eliminator 245 cc aluminum cylinder heads from Air Flow Research for almost any Chevy vehicle including the Camaro and Corvette, or any other L98 FBody 350, 383, 400, or 434 SBC for Small Block Chevrolet engines, part #1137-TI. My heads look like the ones in those pics. The offset location of everything under the valve cover area and the combu Home / Cylinder Heads / ProMaxx SBC 225cc CNC Ported Small Block Chevy Cylinder Heads. Even so, the valve angle has been rolled 2° flatter toward the piston. Brodix SBC SPEC cylinder head. Up to 300 cfm @ 28" H2O!! Call Joe@ (865) 573-9151for more information! Well according to those pics, I do have o-ringed heads. Speedmaster has become a leader in its field, built on a long term consistency of being a specialist in aftermarket automotive components. This head is a great flowing 23° head out-of-the-box that BRODIX offers. 10207643. 550, 371, 237 . fully CNC ported 23 degree SBC heads. Our cylinder heads and manifolds will blow the competition away! Cylinder Head Innovations (CHI) delivers championship winning Cylinder Heads and Manifolds, with proven quality and performance, available anywhere in the world at a price you can afford. found out too late that due to the shape of the combustion chamber (next to the exhaust valve) that the gasket generally used for the engines (such as fel-pro 1047) protrudes into the combustion chamber. For the flow remember bigger is not always best. 2 available! logo. Super 23s are an aluminum head with 64cc combustion chambers. Intake, Exhaust . If maximum flow is   12 Jul 2012 Get all the numbers at carcraft. The 462 is one of the best flowing production SBC heads. Port Size. plus having them upgraded to work with my cam. AFR cylinder heads are available from Jegs and other performance engine parts suppliers and retail for $1,465 pair. Choosing a cam without having the flow numbers for your heads is a shooting in the dark effort. i know how well the vortecs flow but I already have a intake and i`m not in a position to buy another one along with the rocker arms and valve covers needed for them. ProMAXX Performance has designed a complete new line of performance heads that meet or exceed the big names in the industry. Casting Number. 600 312 cfm . Name: RFD Platform: Small Block Chevy. Without adequate airflow, the engine will never make power. Why do we use the phrase power potential? The reason is simple. Here is the pitiful flow data for those heads. i ran a 5. I have a set of the "fuelie" heads on my 350 SBC (out of a 68 Camaro, 350 hp) and they're still pretty damn good. For example, we have seen as much as 15-20 cfm difference in stock heads that have the same part numbers. 6 Valves * Angle Plug This is a new pair of our Assault Racing Products small block Chevy aluminum cylinder heads. The AFR Emissions Legal (versions with heat riser only, CARB EO #D-250-2), 190cc intake port small block Chevy cylinder heads are available in your choice of straight, angle, or L98 angle plug versions. sbc heads flow numbers

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