898 sbc heads specs 00 Select options This product has multiple variants. 500 lift and 320+ @ . Gotta watch the lift, though. I watched a dyno video on SBC heads and within reason the bigger CFM heads didn't lose much on the bottom end which surprised me ( I think they were 170->200 cc range) . Hyd roller . If they were an older set of Comp heads, they are probably rolled, probably thin, and probably on the used up side. Not a real desirable head, but should make 420-440 hp. Been contemplating heads for a future 327 build for my ‘57 210 post and today some reconditioned 896 heads with less than 10k materialized for $200 for the set. 1585 posts · Joined 2011 Add to quote; Only show this user #1 · Jan 19, 2014. Didn't mean to make you feel bad about your rebuild, I've just had really bad luck with 882 heads. The 291 is a SUPER Casting providing you follow Grump's Specs; in other words, you have to work them in order to increase flow with cams over For performance applications, there are other GM castings that are similar in specs. 250 =. This made the intake bowl around . 400 in. Seller rating: 3. 470 lift - 210*/215* on 110 C/L - current cam The heads will need 2. 44" (+) compression height of the piston 1. T. Another option to what has been offered is to replace the dual springs w/stock-type springs that have an inner damper. The 083 Post: 898 heads???? (Topic#216990) 88heavychevy Forum Newbie Posts: 13 Reg: 03-06-09. Send Private Topic View Profile. 250. Modern valve covers Modern chamber/ spark plug location, hardened ex seats. That is when I noticed that even though both 4. (Weiand 142/177 Roots A spec that nobody, and I mean nobody, lists in their cylinder head specs. 6 to 60 cc most Power Pack heads were (there are some that are 70cc, mostly on trucks). Thanks, Butch Thanks for posting this, you have my attention and interest. I know it's 65ft. intake valve exhaust valve; 032: 70cc: 1. Deck Height: 9. 3M members. . Featuring high velocity, PRECISION As-Cast or optional CNC ports. However I decided to disassemble the heads to do some porting and polishing. 02x 1. Jump to Latest 109K views 24 replies 12 participants last post by jesse01 Aug 17, 2005. LOG IN; REGISTER; Forums. 02 ,1. 73 -- MS3X efi / Hotchkis A-arms & Springs / B-body 12" brakes / 1. They will outflow Vortecs up to about 3500 or so,but,they quit breathing @ 4000 to 4500. 501/. 5 valves and the casting numbers are 3932441 or 3923441 (the I have a cracked one on my Camaro right now. Cant remember the mag, but I recall them saying something on how good the 882 heads are and they can be bought cheap. 50: 034: 64cc: 2. place. When dyno'd on the Vette's rebuilt 327 (. We design and manufacture a large line of cylinder heads for LS1, LS3, LS7, LS9, LT1, LT2 & LT4 engine platforms. 02 Intake Valve 1. User Info. 98 Your Price: $ 1,005. Anything OEM will need judicious rework with a die grinder to wake them up. 07 $ 898. The cast iron heads use a torque of 65 ft lbs but the aluminum heads require a different setting. I know with smaller heads you give up some top end HP, but you don't spend much time over 5k RPM it probably won't matter much. Ok, now I am lost if it has a . Even had a blurb from Darin Morgan(Reher-Morrison head man, AFR heads designer and designer the ProFiler head), he was impressed enough to say it was a nice casting. The extra thick decks and walls improve reliability. Maybe he will chime in here. 5. W. 030 over 350 that surprisingly work really good. 1001/2 351633229200 291996169160 New Complete set of Aluminum Small Block Chevy Motorsport heads. 25" F-body swaybar / UMI rears & swaybar / JGC PwrStrUpg We have 180 set of 195 SBC heads in the warehouse currently. Dart Iron Eagle S/S Small Block Chevy Cylinder Heads-Add to Some of the 305 and 267 heads are good heavy castings and work alright for a street performer if opened up and larger valves installed. valves. 6-6). These heads were used in various SB Chevy's for the 72-73 production years. Those guys will be most interested. They flow low 200s-220s with 2. 040" over with a turned-down Callies 3. Gasket 5108 on a drag only 422 sbc with W/P Sportsman II heads at 11. BBC 291 Head Specs? Jump to Latest 26K views 6 replies 4 participants last post by sonk Nov 3, 2005. If you're looking for good castings try When chosing heads its important to know the flow data for those heads and not to choose a head with too much intake runner. 080 valve, 230 cc or so port. The build: stock 4 bolt sbc block and pistons with standard bore and stroke stock 096 vortec heads with upgraded springs and retainers(NEW) Best & Worst SBC Heads. Dart Iron Eagle S/S Small Block Chevy Cylinder Heads-Add to cart Compare. You are going for the date code guys which like to stay within about 4 weeks from car build date for heads and blocks, so folks with a mid January build cars to early to mid February build cars, in my opinion. 94x 1. 0 out of 5 stars 862 heads and 706 heads are both used in small block engines produced by General Motors, and they have some similarities and differences in terms of their design and performance characteristics. points championship that year. SBC Head Specs. from Nebraska. 55-inch combination and it has a 58cc chamber. Jump to Latest 24K views 10 replies 5 participants last post by GMCBEAST Apr 6, 2012. Round push rod holes. if they have pressed in rocker studs 1. 60 exhaust valves. 650 Lift, Each See More Specifications | Check the Fit Summit Racing™ Precision Cast Cylinder Head SUM-162LS210CATH Must run factory cylinder heads (no aftermarket race heads allowed). 50" valve 64cc head from the 1969 295hp 350 and the 1970 300hp 350,, same engine as none of the actual specs changed. little truck ran 4. These heads are very similar to the 441 and 493 400 small block head. I invested about 40 hours of port and bowl work with guages into them though. Even the ''as cast'' heads utilize ultra-smooth new runner and chamber designs that produce ''CNC'd type'' flow numbers. 250 radius, that would = . 50exhuast) SBC 882 heads. Ignore the holes in the heads from this point on- they will be plugged by the 350 gasket. 240 Deck Height; Standard Chevrolet Bell Housing bolt Pattern (same as the original SBC) Four Bolt per cylinder head bolt pattern Small Block Chevy Cylinder Head Identification. C8 Z06 Discussion; Heres the specs. 501 292°/292° cam. My question was are the torque specs. 5 valves. 50 76cc gm 71 heads . GMCBEAST Discussion starter. 90° V6 Series Cylinder Heads/23° 340292 sbc heads. 74" (throw from the center of the crank) (+) 5. Why is that? '70 Chevelle ZZ383 / 700r4 / 3. Rocker studs should be torqued to 50-55 ft. So I'll get bearings and rings put in and some new valve springs after I The 336(x) heads are very similar to the other early to mid 70's large chamber smoggers 441 487 920 etc. NHRA spec's out the intake runner at 159 cc's max, so that probably means they are 150-155 in stock condition. Info on GM heads #93417369 Jump to Latest 17K views 2 replies 2 participants last post by goatjj Mar 21, 2002 Hi, Can anyone help me, I have a set of Canfield heads, #20450 on my 95 302 roller block. on an iron head. 3L LS - OnAllCylinders says: June 22 The All-American SBC Cylinder Head Series is a powerful, out-of-the-box, 23 degree conventional port cylinder head product line. Released in the late 70s, the 882 heads were These heads,as per www. The 327 SBC is a great-easy motor to supercharge. Re: Runner volume chart for vintage SBC heads? Old Chevy High article? "461" heads were cast with either 3782461 or 3782461X. 305 heads are common at It looks like the heads were sand/bead blasted w/o removing the guide plates or studs, then reassembled. Jump to Latest 8K views 3 replies 3 participants last post by STUDE55DOG Nov 9, 2010. Chevy LS Cylinder head, 210cc Cathedral port Intake Runner, 64cc Chamber, 2. 99 USD Regular price Sale price $1,094. I already have the 601's on the 283. Recommended Communities. and any thoughts/opinions on them. 60 Ford Aod 4. Definitely not world beaters, but ok for a daily driver good running motor. 84 intake and 1. I have . 013 piston down the hole and . Thanks---the heads will cost 325 for the pair with the 202 intake and matching exhaust and new springs--surfaced-ready to go. 02 intake and 58cc-64cc will make more power. 90° V6 Series Cylinder Heads/23° 3. 300 more shallow than a standard modern performance SBC head which deleted this water port. 736 bore. Available in various as-cast or In this post, we are going to be looking at Chevy 802 heads and establish whether or not they are any good. We set them all up with some SBC 2. 48" crank (/2) = 1. 550 lift springs that will work on my kids spare SBC for his dirt mod. I've found a pair of Corvette L98 heads for cheap ($350 ready to bolt on). 7" rod = 7. Jump to Latest The heads on the motor are 340292 heads. The information I am looking for is information such as . these would have to be better than a 601 or 416 casting heads. I am looking for any and all info on these heads . they have 64cc chambers & 1. The 882 heads are smog heads from '74 to '80 and not very well regarded, but neither are stock '85 heads - if you can find out more about the 882's they may be better than your stock '85 heads - ie not only polished & ported but if milled so they will give higher compression and if valves were changed to 2. 70FG 776 Replies. You will get a much better street result (big torque) for the cash spent. org Date: 2009-03-18, 6:29PM Here are the specs for the "as delivered from TFS" for both versions: G1 TW: 180cc intake port volume 64cc chambers 2. You'll need some time to view these two videosSo, grab a cup of coffee and relax Just about any set of heads that has a 1. The 882-iron head out-flowed this head across the board. As soon as I get things wrapped up on the current project with the Vette I'm going to get a good set of GM heads for the Camaro. Some cleanup & porting can help a lot if you are capable. we figured 75 cc on volume or LH Series Cylinder Heads/17° Head Hunter™ F Series/15° ST 5. The 906 and 062 Vortec heads are two popular cylinder head options used in small-block Chevy engines. This head also features newly designed intake and exhaust ports that flow an amazing 349 cfm on the intake and 242 cfm on the exhaust! Which would be better. These heads used to be sought after by the roundy round racers that were limited to stock heads, as they do flow a bit better than comparable heads of that era. 500 lift and 2. I found the casting number at Mortec, which said the heads could have either 1. 622 in. or do I use the tape? Take both sets of your current heads, and trade them for some #601 casting 305 heads; you may even get lucky and get the 1. Found it: • View topic - Import core for "BUDGET" CNC head. 898+ bore sizes, Max . When using 64cc heads,,,, Flat top 327 is about 9. cast iron Vortec head, Gen. the heads were remanufactured by Indy head in california,the spec on them is as follows, G. radracer43 Discussion starter. Profile Page. The head casting number was 3973487X. They fit nicely on the heads but I have a 1/8 gap under the front and back. Put them on 3 customers cars back in 03 and they finished 1,2,3 for the. 240 in. 00/1. 160 exh. 95 tbi heads#810 thanks double vision saves my intake from being drilled heads will be donated to scrap pile. 5 valves as 601 casting but larger chamber, actually same chamber they used on all early 305 heads. 64 posts · Joined 2011 Add to quote; Only show this user #1 · Apr 5, 2012. The fact that the heads are aluminum makes no difference. 905") block. 02/1 The Chevrolet Performance SB2 NASCAR racing head was designed to improve durability, simplify preparation procedures, and reduce the overall cost of building and maintaining a Small-Block Chevrolet racing engine. I agree with Bill if they need any work or $$$ to make them work I would buy a different set of heads. Jump to Latest 40K views 31 replies 14 participants last post by mikesteifer6970 Apr 22, 2022. C4 Tech/Performance - 1987 L98 Aluminum head specs ? - Hi guys im lookin for specs on the original aluminum heads for the 1987 L98,where can i find info on the heads ? Thanx a lot. 580 lift. Anyways, he told me the heads I have are some of the best stock heads made. 3/8 mile dirt track. Engine Mods - Torque specs for Brodix heads - Bolting on a set of Track 1's and I need to know the torque specs. k 898 Replies. here is info Dart Iron Eagle S/S Small Block Chevy Cylinder Heads-Add to cart Compare. 375" or some Mopar 1. The listing ran 4, maybe 5 pages, and was in the form of a chart/listing. 650 SPRING KIT $ 364. 1K views 2 replies 2 participants last post by lg1969 Sep 25, 2009. 50 only. I looks like these heads where made in several different configurations. 650 Lift, Each. The heads are better than low power crate engine heads. 487x heads flow the best out of all the big chamber medium valve heads (1. Casting number is 191 or 193 on these heads. More tech info. 080 valve. 33 gears 4 wheel Disc brakes E85. 84-1. You know the shop that put this together didn't read the fine print in the 383 kit----gives 10:1 compression ratio when used Best Chevy SBC 601 Heads and 305 Heads for sale online at AlliedMotorParts. i looked at the website and speed pro makes decent hyper pistons, but here's the math 3. lube such as ARP torque lube. Enginequest 200cc iron SBC heads. 02: 1. 50" valves, 64CC combustion chambers, straight plug configuration, not sure on the accessory holes, and I do not have any port volume data on these heads. 041's are a 1. Upgrade your engine's performance with Chevy 5. In order to do so, you must use a head gasket with a 4. Part Number: SUM The 882 head is a 151 cc intake runner, so basically they are comparing a World products head to a small port smog head from the 70s. 53cc chambers will help with your CR, being even smaller than the 56. Must have a cranking compression no higher than 150. 62 Add to cart. Drag Racing; Trailers; Hot Rod/Street Rod/Custom; Antique/Classic Cars and Trucks; See All; These holes on the front of the head came about with the advent of the "long" water pump in 1969. The revised 461 heads were available starting in 1964 models with either 1. -Cam 12-15-2016, 04:28 AM sbc head casting # 3973487X. the compression will be 9. Any and all help is greatly apprreciated. All the machining has been done, etc, etc. Hi folks, I need a little info on torque specs on a 400 sbc I'm switching to head studs after finding a couple of bolt hole to I have 58cc chamber iron heads on my 350" currently and they have been on this engine for over 100,000 miles. Thick deck - Can be used with Nitrous 10110810 & 14101083 sbc heads 10110810 & 14101083. different on aluminum heads as to the stock cast iron heads? I do have new bolts with washers and they came with Teflon tape on the threads, shouldn't I be using some kind of assy. 02 intakes 1. He was porting them to match an Isky 280 Mega in a pretty mild street app (450HP/500TQ -- 5,500 max RPM), so I'm sure he wanted them at a certain spec. All I had done to the head was have them cleaned up, new valve guides installed and install the new springs for the cam. This piece is not our first choice for a performance head considering that the largest valve this head fits is a 2. I would not does anyone know where i can look to find specs on sbc heads casting # 3998991 they say gm 71 on them i'm tryin to find out factory specs cc's, valves,springs,rockers, ext. 00 CC Chamber. you can get into solidly made budget aluminum heads for between $650 and $850-900 depending on brand and whether 10/24/2016 H16 Dart Platinum 230 SBC 23 °°°° Aluminum Cylinder Head Part# 11710040P – 11821143P Material: RMR Cast Aluminum Alloy Comb Chambers: 64cc & 72cc Intake Valve Dia: 2. 02 intake. 0L 305ci V8 SBC 601 Cylinder Heads. I have used Hot Rodders for much of my sbc build but now i am down to the nitty gritty and have detailed technical questions about my build i hope someone can answer. and they had 1. Still a few small cube comp eliminator cars down under using the Buick heads and making great power. 94 intake and 1. Will the vortec head where you bolt the intake down take 30 ft lbs of torque? Arp rod bolt torque specs honda Sbc arp head bolt torque specs [fast and effective ways] Torque head bolt sequence arp specs stud ls1 ls3 engine ls2 camaro lsx bolts part chevy gm numbers block install Arp head bolt block ford kit v8 small bolts windsor hex kits cylinder performance heads series high If I could not get a SBC to spin 8000rpm then I was not your professor. 94 valve, with the chamber opened to unshroud the valve and a smaller cam in the 220 duration at . 7L Vortec heads are in much greater supply, still available from GM and flow better than even the best double-hump heads. 343". If you have the book"How to Hot rod the small block chevy" it is the center section for these heads. 94-1. I'm using ARP head bolts and it is for a small block. i know that they are rec port/closed chamber, but thats Mark Jones just did a set of 041 heads for my 408" SBC. The ProMaxx MAXX Series Small Block Chevy Aluminum Cylinder Heads are taking affordable performance street and strip cylinder heads to the next level. lbs. They are beefy for porting, but they flow almost THose heads (882) are not very thick or strong castings and typically crack between the valves. 6 exhaust valves, 190 cc runners and 64 cc chambers and springs good up to . Closed Chamber. : 1. 250*. Pump gas All motor SBC 427 3308 lbs-29x10. Hello all, I just bought a set of aluminum heads to install on my 406 sbc. They allow for mounting of the alternator in front of the head (and smog pump on some applications) for sbc engines. Oddly enough, the Vortec heads were a If you are using ARP hardware, follow their recommended torque specifications. A major difference I have a set of Chevy late model small heads casting #14101083. The 601 or a set of zz4 (l98) heads on a 283. 76 cc combustion chambers. LH Series Cylinder Heads/17° Head Hunter™ F Series/15° ST 5. I know there;s a gap there but 1/8" seems to much. Intros; In Memoriam. 60 heads that would clear the tiny bore of a 305. 99 USD SBC Bowtie phase 2 head question. 107 posts · Joined 2005 Add to quote; Only show this user #1 · Nov 2, 2005. Technical Specifications Material: High density cast iron Valve Seats: Integral intake,hardened steel exhaust Valve Size: 1. I think that if the price on those was kinda close to an aluminum heads price range,i'd probably go with the new aluminum type. Save Share Reply Quote Like. 5 Hoosiers NEW BEST ET Put together a 421 recently with cam specs almost identical with ported RHS 235 heads and had similar results. Anyone have info on these heads? I have a 72 w/350 base engine with 487X heads. Responds well to porting and larger 2. Only 3 left in stock. The castings seem to be good, but the . 72/1. 1200 posts · Joined 2007 Add to quote; Only show this user #1 · Sep 25, 2009. 95 posts · Joined 2004 Add to quote; Only show this user #1 · Nov 9, 2010. My references do not list this head for a small block Chevy. The heads are ported 601 casting with 1. M. 25" diameter w/an installed height of 1. It has a little too much thrust bearing walk for my taste and they couldn't remember the exact cam specs. Hey guys, I have recently aquired a set of 400 heads (steam holes present) cast numbers end in 642. These Chevy 601 heads are meticulously crafted to exceed OEM I was able to get a little more info on the heads. 025" so that would put you . Part Number: SUM-162LS210CATH. Yes, you can run our cylinder heads on your small-bore(3. One of the best cast SBC heads ive ever ported. 875" stroke crank), they made 12 HP less than a pair of 200 CC Dart Pro 1 Platinum aluminum heads. 50camaro » Sun Dec 29, 2024 6:58 pm I have used the Mr. Deals Forum C1 & C2 Corvettes - Are 3973487X heads any better than other large chamber SBC heads? - I pulled the intake and valve covers on my 72 C10 to fix some oil leaks. lg1969 Discussion starter. These springs are 1. Save Share I'm rebuilding my 283 out of my '66 c10 and I am wondering what the flow specs of my power pack heads are. Cylinder Head Options; Technical Specs; Description; SBC/SBF . BTW, these are the heads used on ZZ4 engines to give you a round about idea what they can do. 60 valves they could possibily be from a 1971-1972 350 Z28 LT1 motor (330hp 255hp). 72 1. heads on a sbc. To install bigger valves in any head, the distance between the two valves has to shrink as the valves get bigger. Hardcore racing heads have barely enough room between the valves for a fingernail. 94intake 1. I never asked what they flowed because I trust him and don't really understand all the details. You can buy 23 degree heads now that will match or exceed them on bigger cube motors. 600” Exh Port volume: 75cc I already had the heads or I would have gone 200's. Camaro, Corvette even Stovebolts can be found here. 08/1. Applying the techniques described here to a full-race port spec typically takes about 100 hours. My ride back then was a Dodge 7400rpm A&W Spec'd 340 RS Mag Challenger that matted most GM combatants, only because I didn't build their SBC but I can say my Dad's 68 327/TH400 2+2 Parisienne could hit 8000. I didnt have any heads and mine are fresh rebuilds with some manley valves from my machinest he had on the shelf for $600. 7K views 1 reply 2 participants last post by S10 Racer Jun 1, 2012. 50 valves. Aluminum, LT5, ZR1, DOHC, 32-Valve, drivers Side. That is, those castings did not have a reduction in metal in the casting. Stroke: 3. Any information on these heads is greatly appreciated. From your post those heads have been totally reworked. 125" or larger bore; such as the Cometic SBC Head Casting #14022601 Cast Iron. PC3002S/AC FF281. have a fairly good set of 882s that work very well on engine currently in place now. 560 = 9. 02 etc they will be better than what you have now. The intake valve sizing is 1. 7th Gen Mustang Forum 2K members. Bogie. If they weren't dinked with too awefully bad, i'd probably buy them for the price---especially if you have no heads at this point. Look like some serious power, better yet they start out fully assembled pair for $895. 02 for the LT-1 engine. The engine in the truck is a flat top 350 that had 76cc smog heads on it. Jump to Latest 5. Ask Away! with Jeff Smith: Building a Performance Intake Manifold for a 5. 92 for the base engine the 2. 50 or 2. /lbs using Permatex thread sealant with Teflon. In loving memory of lost CorvetteForum Brothers and Sisters; C8 Corvette. SB2. If that is the case,this would cause detonation problems with stock timing. valve springs maxed out to the point where there close to binding. Hardened seats, very clean, pulled from a’63 Corvette resto because the date codes were wrong. They were for racing over the counter heads and were - 355 SBC roller block, factory rotating assembly - World Products Sportsman II heads - World Products Dart II intake (supposed to be similar to Air-Gap) - LT4 Hot Cam (LT4 Hot Cam Specs) - Holley Street Avenger 670 carb And the rest of the car: - 3300 lbs - 3. Description Professionally rebuilt pair of Small Block Chevrolet cylinder heads. Pops @ Tri-5. The Gen I Twisted Wedge heads use raised guideplates. Chevrolet Small Block Heads . Just my 2 cents The 993 heads were used in 72-73 Chevy 350s, many of them were the 250 horsepower version. These have good . The reason is because Pre-75 heads were the "heaviest". Classifieds . So farso good. If they have screw in rocker studs, guide plates and 2. If you have to pay someone to do it tho,it's not worth the costs. Jump to Latest 21K views 16 replies 11 participants last post by Straight Shooter Oct 12, 2014. Casting Numbers to look For. its not worth the $$$ if you don't already have a set as a $400 purchase plus 800-1000 in porting to bring them up to spec isn't worth it, the small chambers are nice however. hey guys, I have a set of sbc heads with a casting # 3973487X also Jl 61 stamped. 810's x . If this is something that you are interested in, then stick around. 76 posts · Joined 2013 Add to quote; Only show this user #1 · Feb 22, 2018. Made a head change and went to I purchased a 400 sbc complete and disassembled. Now you tell me the Hp ;o). 6 valves , screwin studs and guideplates ,bigger spring pockets,downcut guides ,it would be smart to open up the pushrod holes, and THEN THE 30HRS OF PORT AND BOWL WORK!! Those heads were used with the target crate engines, and are one of the better (heavy weight) heads chevy made in the 75-76 cc range. What is the torque specs for an alumin. 210” Int Port Location: Stock Intake Gasket: Fel-Pro # 1206 Exh Valve Dia. There not the best heads for sure, but depending upon your budget, you can actually get some surprising results. 720's x . I did manage to run in the 12's with a set of 882's on a 383 but, I had a lot of time and wasted money into them. 94/1. It is ideal for single-four-barrel carburetor applications due to having “mirror” design intake ports and all eight ports being The 601 is a truck head it has really small chambers maybe too small because theyre tight around the valves it shrouds them pretty bad. RPM intake. AVS Forum 1. The heads have been CNC machined to Fel Pro gaskets and look absolutely perfect for $880 complete. 898 Small Bore (SOLD IN PAIRS) $ 1,609. If they were an older set of circle track heads, they are probably small, probably thin, and don't move any air, and still used up. whiskers Discussion starter. 210cc All American Aluminum 23° SBC Racing Heads, Assembled, Straight Plug, Each Regular price $1,094. Jump to Latest SBC Casting # 14022601 Thanks for the info---53cc seems very small for smog era heads. 000 stack, a standard sbc block is 9. The 200's are a good deal if you can get them cheap enough, especially if you can port them yourself or know someone who can SBC TRICKFLOW G2 CHEVY HEADS PORTED SMALL BLOCK ALUMINIUM Reply to: sale-fk3es-1081239852@craigslist. Looking for suggestions or recommendations as to what 23* head/intake runner size to use for my 421 build. n o s makes up for a few cubic inches. The BRODIX BP 10 STD CX is the newest creation in a long line of successful small block Chevrolet compatible heads. , so it wont take much HP to get some speed out of it. 73 posi gears - T-5 transmission I got the car dialed in with the seat or my Chevrolet Small Block Heads – Casting Numbers and Specifications. They had only ONE exhaust crossover passage and there was more metal around the lower I have a set of Chevy heads with a casting number of 333882, with 1. The "041" heads compare favorably but the '96 to '01 GM L-31 5. 5001 74 1971-73: 330862 What u think of 3998993 sbc heads. 2 head 48 ~ 54 CC angle plug 284 CC intake runner Bare heads. Thank you for your time. 76 posts · Joined 2003 Add to quote; Only show this user #1 · Aug 15, 2005. 292" – 3917292, or 340292. 72: 1. G. Thrust Bearing Location #3 Main: Main Cap Style: 6-Bolt: Main Housing Bore Dia. 700 SPRING KIT XXTREME 245 LS1/LS2 Cathedral 3. Save Share Steve. There is a 3986336X head listed so if the second digit is being read as an 8 vice 9 and you/seller is ovelooking the X, then it is a 350 head with 76 cc combustion chamber. the engine is a 350 Steel crank, 4 bolt main, 9. While 906 and 062 Vortec Heads share some similarities, there are also some notable differences. What's the history behind the swirl fin (obviously to get better flow) . I'm looking to buy a set of 441 heads. 60 The casting number of those heads ends in 083, and yes they have 1. To find the area of a circle its Pi * r2 So the r is . 7". Third Gen Racer Discussion starter. aftermarket manufacturers began supplying replacement heads for the SBC I had the 461X heads from my 62 Vette ported by Mike Stark. I have 2 intakes but The intake bolt holes are a bit wider than the holes on the heads. A stock set of rebuilt camel humps will be much better. 1971-75: 330545 307,350 1. 50) these are highly sought after and would give you a small performance boost over your 624 or 882 heads. 172in 180ft of mud this weekend for 3rd. Thanks! The earliest 265 and 283 small-blocks relied on an iron Power Pack head that featured 58-cc chambers and tiny 1. casting # chamber vol. Neither had accessory holes. 50 valves and have about a 150cc intake runner. The bigger heads to follow were the “double-hump” heads championed by the mid-’60s 327 Chevy LS Cylinder head, 210cc Cathedral port Intake Runner, 64cc Chamber, 2. Discussion in 'The Hokey Ass Message Board' started by Fireball Mezcal, Apr 19, 2007. 750 gasket type spark plug that Promaxx recommends the threads of the plug are out into the combustion by about 2 threads plus the base ring of the plug. any guy wanting some serious SBC street heads for cheap, larger CR, blueprints got it. The 292 heads were designed around 1970 and are based on the traditional SBC head at the time which had a water port in between the intake spring seat and the intake bowl. Both were used between '64-'66 on the 327cid and had 64cc chambers. Post by JODY » Wed Dec 02, 2009 3:25 am. A bit different intake port. There are more than one stud style for the SBC, so look it up by the part # of the studs you have. 1 post · Joined 2012 Add to quote; Only show this user #1 · Jun 1, 2012. 90° V6 Series Cylinder Heads/23° Find CHEVROLET 6. 50 valves they are from a bread and butter base passenger car/truck To offset this, the port needs to be widened around the base of the guide boss at the bottom of the port (Fig. This is going to be put into a s10 for a beater truck so max horsepower is not really a concern, just something to commute in with what I have laying around and take some wear and tear off my 99 silverado and possible help with fuel mileage down the road as These heads come with hardened steel exhaust seats compatible with unleaded gasoline. Performance, Bore & Stroke, Cylinder Heads, Cam Specs & More [] Reply. 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. new umbrella seals,locks, retainers,springs are suitable for up to a 525 lift cam,3/8 screw in studs,65 cc Also told how straight and nicely sized the guides were and how good the seat were. ARP torque specs are frequently different than factory specs because ARP uses a different material for their parts. IMHO as opposed to changing the heads on a 355 SBC,,,, I'd turn that 355 into a 383 stroker and keep and port the heads you got. Are they going to be a Right now we are limiting the listings to Chevy V-8 blocks, cranks and heads. 0 Series/20° Track 1 Ford Compatible Series/20° Mopar Compatible Heads Menu Toggle. 150" intake valves, for the exhaust's we use either the OEM 1. I don't know how anyone would have any idea of the stem to guide clearance by looking at a photo of an assembled head, but if it were me, I'd disassemble them and go from what I found after magging, checking the guide to stem clearance, the valve job Re: 408 sbc head gasket choices Post by 6. 02 and a good valve job. Must run factory-style stamped steel rocker arms. very happy with small block competing against mostly big block trucks. They are more preferred over the 882 head due to their heavier casting. However, 062 has slightly larger valves than 906 Vortec Heads. It weighs under 3000 lb. Use a head gasket made for the 350 SBC not the 400. The 305 uses heads that have a 58cc and smaller chamber due to the 305`s small 3. heavy weight castings,3 angle valve job,bronze wall liner,aeromax stainless steel polished valves ,202 int. It's possible that you/or seller is misreading the casting number. Just dropped off a sbc 400 at the machine shop, we discussed the heads that I had and if I should rebuild or buy new aftermarket. Jump to Latest EQ only still offers/sells the Vortec Replacement and IMCA spec 170-180cc heads. 00 CC Port, 76. If the block has not been zero decked to the piston you will not be close to 10. Any info would be appreciated. What I’m looking for is a good 305 head for a 92 camaro RS TBI 5spd. At one time, a magazine did a test of the Twisted Wedge heads on a 305; they claimed they were the only 2. If your wanting a 18º head, buy a Trick Flow. Even without the valves in place, it’s easy to see the later 409 head (left) has bigger valves. By the time you get into rebuilding machining and all the work to make these old heads flow good its cheaper to get a set of new cast iron or aluminum heads. Jump to Latest 2. 100 lift/ 54cfm intake etc. 050 range. 84 valve intakes. 60 valves, depending on application. 039" felpro head gasket. With the 416 head on a 350, they work well with a 1. • View topic - Import core decked. Heads have the center bolt through valve cover. R. 8-1 compression if the heads are still a stock 487 volume of 76cc's. While creating the 100% CNC Ported MAXX series, Many long hours on the These heads are found on most of LS-5, OEM, 100% stock-appearing units. Thanks. 84 intake valves, screw in studs, guide plates, Comp roller tip rockers , and a decent set of springs. 02 valves too. 08” Intake Port volume: 230cc Intake Port Dim: 2. B1 Series/15°/18° Spec Heads Menu Toggle. 84 and 1. S. They yield average flow numbers, but respond to modifications just like any other small block head. 02"/1. Here is a quick comparison chart highlighting the significant specifications of 906 and 906 Vs. 180” x 1. Many classes of dirt track The 291 is a Stock 8G GM 302 & 327 Head - NOT for 350, 383 or 400ci mills. outintheshop cast no. Sales guy said what about our 195 Engine Tech - 487 sbc heads - are the 487 sbc heads any good looking for a good flowing head on the street there the 487 not the 487x thanks-logan. 6 exhaust and cast The L31 Vortec cylinder heads represented a major design change in Gen I SBC heads. 50-inch valves. has anyone ever used either these castings? i'm wanting to put a pair on a 305. Remember that the '461X heads were used in 1961, 1962 and 1963 with valve sizes 1. 2L/376 Chevy small block Gen III/IV (LS-based engines) Cylinder Heads and get Free Shipping on Orders Over $109 at Summit Racing! Summit Racing Gift Cards - Always the Perfect Gift! 64cc Chamber, 2. Customer choice here, exhaust sizes not all that important to us on this specific platform! SBC 350 Cylinder Head Bare Straight Plug Aluminum Perfect fits for Chevy Small Block 302|327|350|383|400 200cc Intake 64cc Camaro Z28, Chevelle, Monte Carlo, Hot Rods, Street Rods $898. 6 Exhaust Valve, 3. They have 1. Everything I have read and been told (I have not had the heads off of mine to confirm), the chamber size is 76 cc. The "standard" 461 head's intake port volume was 161cc, exhaust was 62cc. specs on 350 crate motor heads casting #93417369. their center bolt valve cover head. Joined: Aug 18, 2006 Posts: 37. 462/. Member. 600 with 2. A dead motor contributed a set of 58 cc 416 heads with 1. No porting necessary. Each aluminum l98 heads on my sbc 350 with a comp cams magnum hydraulic flat tappet . CALL SHANON AT 507 445 3235 WITH ANY QUESTIONS. 416 is the so called HO head has the same 1. Sale! Iron Eagle S/S Chevrolet Small Block Head – 165. For a set of heads like this, when used on a 350 with an 11:1 CR, the best I have seen on the dyno is 518 hp and 462 ft-lbs. I was advised that they are 64cc smog style with swirl fin cast into the intake runner. 062" I agree, the cost of rebuildng tired old stock iron heads for the SBC has now gotten to the point you can either get modern aftermarket budget category aluminum heads for the same money, or nearly so and they will also out-perform the stock junk. They are stamped 441 on the bottom and 598 on top, he said they were only made in 1970 and made with 1. The chamber is identical to the 350 iron heads that has casting suffix 193. STUDE55DOG Discussion starter. They are old style castings most use large s-plugs and have soft seats. 9/5 (3,241) Add to cart-Remove. 02/1. 64cc combustion chamber, 2. MSRP: $ 1,027. Sort by Oldest SBC SB Chevrolet 350 IMCA Assembled Heads 1969 – 1985 - Part #EQ-CH350AA Universal, Intake Runner 178cc, Combustion Chamber 76cc, With Heat Riser, 69-86 Intake Manifold Bolt Pattern, 7-Bolt Hole Exhaust Mounting, Straight Spark Plug, I was in the market for a set of aluminum heads for my 331 cu in motor and I thought that these heads would be a good bang for the buck. Bore Spacing: 4. I've had 'em on my 'Camino for years and years; but not many miles. Just a thought. 94 or 2. Some time ago Chevy High Performance magazine did a Mr Goodwrench 350 build up from stone stock to screaming wild in itty bitty steps see the included URLs. Most Recent; Today's Listing; Most Popular; All Categories; Vehicles. The x means it is a modification of the original pattern. Small Block Casting numbers. Intake and chamber were awesome, exhaust port needed ALOT of help and the cam needed an extra 4-6 degrees of exhaust duration over other heads. This casting # has been used in many different versions of this aluminum 18′ and 15′ Bowtie Use these casting numbers to identify the heads you have. Dart Iron Eagle S/S Small Block Chevy Cylinder Heads-Add to ported 23 degree heads can flow 305@ . Chevrolet Small Block Heads Combustion chamber types . What I have is an 350(010) block, 4340 used 3. FREE delivery Wed, Sept 25 . 94 Heads, i am hoping to make 350-375HP with them. Save Share head specs gm 3998991 307/350 68-79 1. Therefore a fully ported 292 head was 882 heads are not as bad as some say, I have 390hp out of the motor in Kims wagon. What a good recommended valve spring for these heads and cam setup, Preferably cheap because I'm on a budget? (head specs : 64cc 1. Aluminum, 195 intake runners, 75 cc exhaust. I'm sure there are folks out there that have had these heads last a long A 64cc 083 head from a L98 350 TPI motor can work real well. I’m not looking Pontiac 867 head for sbc. Heads from Dart, EQ, and RHS can make big horsepower numbers right out of the box, and they don’t cost an arm and a leg! This Tech Tip is From the Full Book “ HOW TO BUILD MAX-PERFORMANCE CHEVY SMALL BLOCK Aluminum heads (and intake) are a sure way to drop lots of pounds. Timh Discussion starter. 025" in the hole @ TDC, that plus a . They will probably move the same air. 500'' Rocker Arm Studs: 3/8'' shank, screw-in style with hex shoulder Torque specs for SBC Vortec heads. 60 valves, and were This aluminum head was used on the Corvette TPI engines from the mid-Eighties until the LT-1 1992 motors were introduced. This new 100% CNC ported offering has a rolled 21° valve angle, as well as redesigned valve spacing of 75/90. Too bad, the EQ 220's and 235's were a killer deal while the inventory held out. 50 exh. 5-1, the math shows 9. Both are good performance heads. 046" quench, The good thing about the 416 head is the small chamber for the small bore engines, but don't be fooled, these heads will not make nearly the power a Vortec head will. The later 461 or 462 heads would be my choice for a nostalgic look and high performance. 12 with the head gaskets & pistons i'm using. The other pair are 993's "Hecho en Mexico" I guess I didn't know 993's were also made south of the border. Hyd roller with the same specs as above 3. The 993, 487 and 441 are fairly similar, with one of the main differences being the 487 and 993 But nothing spectacular though they do it with a port under 190cc’s there are many 23 degree head’s that do as well to better with a 190 to 210cc port. Valves were 2. 91 octane and 35 total timing is only 3 HP less than 38 total timing on a wheel dyno. 50 inch dia valves. Jump to Latest 23K views 29 replies 14 participants last post by 55 Rescue Dog Mar 18, 2016. 0 to1 , running on 93 pump gas with VP octane booster mixed to 98-99 octane with out any issues. The options may be chosen on the product page LS . SBC Brodix track 1 2. SKU 10024267A. The 3917292 was found on 1968 327 and 350 engines, had 1. New Member. I'm not a big fan of World heads. 750 stroke crank(20 main/30 rod main, and 991 open chamber heads. Hi, folks. 07. sonk Discussion starter. High performance premium cylinder heads and components for LS & LT applications. If you are looking for more power and better 441 sbc heads. 898"-3. 88. I want to find the specs for these heads because I'm putting them on a 305 SBC Block and was wondering the difference in specifications. One pair are 882's with race springs (don't know the specs yet). 155 bore. Not a bad head, just never gained a following, it is a crowded field with every aluminum foundry on the planet making SBC head’s when not producing dog food cans. My local speed shop sells Patriot heads complete with 2. Fireball Mezcal. 75" stroke and 7200+ rpm we found that it will just polish the LH Series Cylinder Heads/17° Head Hunter™ F Series/15° ST 5. That is a 4. 0 out of 5 stars Chevy LS Cylinder head, 210cc Cathedral port Intake Runner, 64cc Chamber, 2. 200 to . I've got a set of reworked 267 heads on a . 940'' x 1. I've experimented a little and with a SBC with 3. Must run flat top or dish pistons. 00 – $ 2,904. 280 is the bare minimum for . While a 210cc intake runner head will make good horsepower on a 350 engine its not going to make good low end torque. As new castings are released on late models keep your eyes open for the new numbers. 5:1 compression ratio with these heads, comp cams I have been running those heads on my 302 for 15 yearsthey are my favorite! They have been called 292 "Turbo" heads when they first came out in the early 70's Valve size are 2. At that time the camel hump heads were commanding a premium price and were getting hard to find, and the few aluminum heads around at the time were too expensive for the average guy, so Lingenfelter, Joe Sherman and others made use of these heads. 60949 posts · Joined 2008 Add to quote; Only show this user #1 · Oct 16, 2014. I nearly bought a set a few years ago, but a cylinder head guy I'm friends with talked me out of using them on a bigger cube motor. 021" head gasket will give you a . 14014416 were originally installed on 80-86 267-305- and 350 cid engs. 400 Bore Spacing (same as the original SBC) Deep Skirt Block with Six Bolt Cross Bolted Main Bearing Caps (reminiscent of the old Ford side oilers, FE, and some early hemi blocks) Center Main Thrust Bearing; 9. 500" diameter. Note the area of metal between the valves. I Goodwrench crate motor, Hecho en Mexico: 370r3523: 71: 265: 3740r997 Early heads do tend to have more value as they appeal to a somewhat larger audience. 898 in. 05-15-09 10:57 AM - Post# 1698158 what are Choosing a performance head for your Chevrolet Small Block. They do provide good lowend torque. Both were excellent OEM heads. I Bowtie, 206/77cc ports, large port head: 33417369: 71-72: 350: 76cc: Gen. 60" valves I bought two pairs of SBC core heads last week. now with a 400ci SBC that 210cc intake runner will work just fine as you have 50 more cubes to pull air sbc head stud torque specs. 5:1 compression Flat top 350 is about 10:1 dished 350 is about 9:1 The 193 TBI heads actually flow well in the lower RPM range. ASCS / SUPR Series Cylinder Heads To Fit Chevy – Ford – Mopar; V6 Chevrolet Compatible Heads Menu Toggle. 02 intake ss valves and 1. C1 & C2 Corvettes - Chevrolet Cylinder Head Comparison Chart/Specs - A while ago (maybe 1 year ago, approximately), there was posted somewhere on this forum, a link to a listing of all Chevrolet and aftermarket BBC and SBC cylinder heads. com Discussion starter. but would these heads be suitable for a tuned port top end? Torque specs on sbc heads. I need help finding specs on theses heads. At peak, AFR 195 CC Eliminator heads were 40+ HP over the Dart heads at peak. zmljpgp nwi jacm jzldkyj gdzzw ffvyp kjj hfwhqvo lrtal htkr