Gm heads. General engine tech -- Drag Racing to Circle Track.

Gm heads 800 - 245. The car is a six speed 91 roadster that I drive every day with 160K on the Here's the short story on your heads, from their casting number; "3911032 - 307/327 68-70 1. One is dated C/22/8 and came of a 68 z/28 302. The other head have 4 heli coil repair (see pictures). 25 out of 5 stars CID Symmetrical Port BB Chevy Heads Accessories Intake Manifolds. they come with 1. I'm building a 496 BBC and have 2 sets of heads, 781 ovals and 990 rects. The inaccurate heat treating and the extreme heat caused by the extra exhaust feed, cause much of the cracking. Back when the Ford Motorsport J302 heads came out, they had a much different exhaust port exit than any std Ford heads. 8-liter engine had an A on the VIN. 6-1 compression" engine that turned out to be more like 12-1 and burned some pistons after only a few hours use. Installed the 2. 99. Opens in a new window or tab. This 350 crate engine came with 285 hp, although I have seen them listed as making 300 hp though thats unlikely unless there was an option. The heads are a 14014416 80-86 305 head with 1. 346. Hands down the 441 casting is by far the best GM 76 cc head. Save Share Reply Quote Like. We have some of the lowest prices on Chevrolet Performance It is definately legal for Super/Stock though. It was used on the '67-'69 396-375's and 427-425's and gives approx. may we sould go on pinks. This is the first set of heads I've done. 035 to get the CC's down to 106CC. 94 1. New (Other) $1,499. agawam New Member Posts: 43 Joined: Sat Sep 19, 2009 5:07 am Location: massachusetts. Part Number: EDL-60455 4. 3L V6 Chevy cast iron truck heads going on my 91 GMC Syclone which came with the "TBI/Swirl port" heads (ugh). ratio with the 375 and 425 pistons. The engine part number is 12353641. 60" valves. Start with: New #060 assembled heads are advised. You have to be careful here, not a lot of material in the area of the bowl. 0 305. L98 heads on it after they were ported out. 86. 520/ . 72 1. I just wanted to remove the minimum amount of material to remove the major obstructions to flow (the valve throat ridges, the exhaust Chevrolet Big Block Heads were offered in many different variations within their 51 years of production. 00 Ron Miller wrote: ↑ Tue May 15, 2018 5:51 pm Looking for Opinions on GM 87 350 swirl port heads casting number 14102191. $394. Our part number for the correct head stud kit is SM2464. 5 diesel casting. Current slide {CURRENT_SLIDE} of {TOTAL_SLIDES}- Best Selling in Cylinder Heads to hotrod71chevelle what happened to the "i have a 500+ smallblock" from a previous post. Any info would be appreciated. There are lots of head shellers that setup and sell these GM heads, Understand the 18 degree valve angles on this head require sometimes special pistons to clear vales depending on lifts used. These rebuilt cylinder heads are designed to provide improved airflow and efficiency for your engine, ensuring optimal performance and longevity. This code will give you the date that the engine was assembled, as well as an abbreviation for which plant assembled it. Are Aluminum Heads Worth the Money Compared to Cast-Iron Cylinder Heads? All things being equal, aluminum cylinder heads are better simply because Upgrade your vehicle’s performance with this pair of GM GMC Chevy 5. 0L, the 706 heads have gained a reputation for their versatility and performance potential. 800 - 341. I pressure tested the heads - all fine there. 0:1 compression ratio 76. To ensure reliability, purchase GM part # 12558060 HEAD ASSEMBLY. 75 to one with my TRW forged pistons that have a very small dome. 0L variants, especially with the right supporting mods, such as camshafts, intake manifolds, headers, and tuning. Late-model trucks with big blocks //4. if they are legal for your class, they will wake up your 305. However, in the aftermarket production of heads, blocks or complete engines continue till this day. 250" intake valve,1. 50 Camaro Chevelle Corvette 993 at the best online prices at eBay! Free shipping for many products! 68maliblue wrote: ↑ Fri Jun 04, 2021 8:05 pm I’m doing a low $$$ 307 Chevy build with leftover parts and I have a low mile set of 193 swirl port heads that are the best heads I can come up with without spending any $$$. Back in that era a friend of mine had a chevy p/u with one 305 head and one 350 head from the factory. Some heads have triangles , squares etc. Chevy Small Block Head Casting Numbers . 18° MBE Conv. Use these casting numbers to identify the heads you have. 14 watchers. I have a set of 217 casting heads on my 327. Post by Dan Timberlake » Sat Nov 25, 2023 5:49 C4 Tech/Performance - GM heads part #'s - I bought a 383 crate engine and the whole engine had to be dissassembled due to the fact that the people who put the engine together knew JACK poopie. 9* MBE 'Big 9' 11° Big Chief. or Best Offer You are bidding on a part of GM Aluminum Heads, part # 3946074. These are just 18 degree GM aluminum cylinder heads. 510" Max Lift Valve Springs Add LSXceleration's That is where most of the used head cores are from. If your existing heads are in good shape and your not looking for ultimate top-end horsepower then I would say go right on and use them. They are 3986338 and 891 or b91. Anyhow my heads had 2. Yes the pistons will need to be dished for the 53cc chambers but I have Comp beehive springs and hope to have good flow #'s when the heads are done. 02/1. 99 shipping. Find key specs on GM's LQ4 6. Failure to fix this issue can result in severe engine damage that can be costly to repair. 60 original GM heads. 84/1. 44 shipping. . Speaking of the 861 head and I could be WAY WRONG, but I think there is a head on the market now that is a copy of the second design 861 bowtie. looks like the bs meter is pegged. Both are presently stock, no porting but have been cleaned and maged. You're certainly in the right place if you're searching for the great cost-effective OEM GM parts. 327/350ci no accessorie hole, they are the red ones $150 for the pair. The casting number on each head is 3774682. Does anyone have an oppinion on putting 305 GM "601" casting # heads on a 350 block. The part number on the box is 10140633. The valves are new. 125/1. 050” on a 108 LSA that I used to run in a 327. Deuce Roadster, Nov 3, 2009. 600 Combo on 4. 74. CorvetteForum - Chevrolet Corvette Forum Discussion; C3 Corvettes, 1968 - 1982; C3 Tech/Performance; Are these heads any good. An aluminum head casting – Chevrolet Performance Parts offers top-tier auto components for engines, transmissions, and beyond. rare 1970 corvette snowflake aluminum heads date on heads is 9/11/70. Media added by Greg's 56 Nomad. " " Almost fully ported out of the C3 Tech/Performance - Cylinder head #462624 - I pulled the valve cover off my 79 and the heads on this 350 are 462624 Are these just standard heads or are they pretty good. It is sometimes referred to as GM Cylinder Head. These heads were used by GM on many 1960-1961 283 engines. Ford Style Engines; GM Style Small Block; GM Style Big Block; Chevy Style Engines; Mopar Style Engines; Chrysler Style The right cylinder head is essential for keeping your GM engine running at its best. Winters cast much of the GM high performance aluminum parts, such as intake manifolds, some heads, water pump housings, etc. I'm planning a rebuild project for my original L48 350 Auto and I have a business associate that has 12551561 LT1 Heads. 454 build. Free shipping. 7 350 906 062 V8 CYLINDER HEAD . GM Fast burn 62 CC 210 CC intake runner angle plug Vortec. I am looking for an Factory big-block Chevy heads were offered in both aluminum and cast iron, both open- and closed-chamber designs, and oval (passenger car) or rectangular (high performance) intake ports. This is for a Pair of Bare 3917291 Heads, (GM Part Number 3917291, GM Group Number 0. Post by agawam » Fri Oct 02, 2009 4:26 am. Looking at building a smallish (440cube) BBC, spec heads are either GM 14044861 W port or the 12363410 later head. I milled the heads . It was actually the 8th digit of the vehicle identification number. I spent a few hours searching the web for info on this head. 5 Dual Exhaust and will be 348 Chevy Heads; 392 Hemi Heads; 383 Aluminum Heads; Harley Davidson 883 Parts; 383 Sbc Heads; 32 Chevy; Buick 322 Nailhead; Buick Nailhead 322; 392 Heads; 383 Chevy; 1987 Chevy Truck Headlights; 327 Chevy Heads; Chevrolet 3100 Parts; 2000 Chevy 3500 Headlights; Chevy 292 Cylinder Head; Additional site navigation. i know cause sitting next to my 70 chevelle is a 70 lt1 stingray with port to the max 186 heads on it. General engine tech -- Drag Racing to Circle Track. Joined: Mar 28, 2007 Posts: 2,111. Features: For 4. GM Gen 5 14097088 Cylinder Heads. Save. Same as Corvette 1971 , 454/425hp Camshaft should be: Mechanical Flat Tappet, Duration 242/ 242, Lift . These heads are correct for engines from April of 1966 through May of 1967 engines, but can be used on most any 262, 265, 267, 283, 302, 307, 327, 350 or other early Led by GM’s Chief Technology Officer, the R&D organization enables and accelerates the development and commercialization of advanced technology throughout GM’s portfolio of products and connected service offerings. Street use only. Mine worked great on the street as is (somewhat "as is"). 91. Profile Page. Frankshaft Guru Posts: 1037 Joined: Sun Jul 05, 2015 10:01 pm Location: Re: 18 Deg. The 1. 1 post • Page 1 of 1. These #'s for a "363" chevy head were given to me in 2012 at 28" intake at . nashvillestreetrods (12) 100%. ZZ427 Cylinder Head Aluminum Oval Port, 110cc Chambers. These cylinder heads meet GM’s stringent quality Chevy Forums FREE technical assistance for your restoration and repair. Compatibility: Fits GM, GMC, and Chevy 5. It was kind of hard to tell because of the greese and it was night. 02 heads had factory machining/relieving around the intake valve. The aftermarket is strong, crate For the 1975 model cars (Vettes included) with SBs, Chevy started cutting corners with the head castings. i have a big block with gm heads and there is no way 186 heads come close. Find cast numbers. About eBay; Announcements; This is an original a pair of OEM GM cylinder heads for Small Block Chevy engines. The FIRST thing that was done, beginning in 75, was to add a SECOND exhaust crossover port. These heads will also require a special stud set to accomodate the necked down 3/8" studs for the two siamesed intake runners on each bank. The most common problem with the 862 cylinder heads is that they crack in the long run, allowing coolant to flow into the oil. Even as stock they aren't half bad but let them breathe with bigger valves and minor bowl/pocket work and they come alive. 64 cc with 1. Maybe $200 pair. In some moderate lifts the standard 23 degree pistons can have the valve reliefs recut to clear the different valve angles. 1971 1972 Chevy Corvette 3973487X Cylinder Head 487X 71 72 LT1 LT-1. Cast iron heads sometimes are required by class racing rules and cast iron is perhaps a bit more durable versus Chevy 350 aluminum heads. high-flow cylinder heads, intake systems, cams, and nitrous oxide. Chevy C/ED 10134363 18deg SBC Heads as received from Customer and as Ported by Jimmy Bell Cylinder #6 was the best Flowing Int and Exh Ports and Cylinder #4 was the worst Int and Exh Ports flow testing about 10 CFM less Head is Angle-Mill to 16deg with 45deg VJ and 2. Aluminum heads usually require a different head gasket . novadude Guru Posts 083 / 217 Chevy heads. 165" hollow stem intake, and 1. Condition. 3L and 6. I had the bowls under the valve opened up as far as they could go. The engine makes great power and because the heads are aluminum and dissipate heat better, I can run 150 GM Modular provides a wide range of smart home electrical solutions like Home Automation, Modular Switches, Wi-Fi Switches, LEDs, Fans, Wires & Cables and much more. 11 hours ago. BOX 33170 Detroit, MI 48232-5170 AlliedMotorParts is a trusted name in the automotive industry, offering top-quality replacement parts for General Motors vehicles. Moderator: Team. A forum community dedicated to Chevrolet Chevelle owners and enthusiasts. or buy new GMPP Bowtie vortecs. I luve them. Home General Inquiries . 6 60cc 1. 8-liter engine, which had the 799 cylinder head in 2010. VISIT OUR FACEBOOK PAGE! "In This set of heads came off an engine that I rebuilt for a guy, after he was sold a "9. or Best Offer The 083 flows approx 185 cfm intake and 120 cfm exh. To stop, release the enter key. Member. 7 posts • Page 1 of 1. 840 BB CHEVY. 625" exhaust valve. i can come to As John mentioned above, ALL 2. both set were crap out of the box like most GM heads were back in the day. Key Features. 12° Big Duke. rustbucket79 Guru Posts: 2151 Joined: Sat Apr 08, 2006 12:23 am Location: Re: 292 Turbo Head Flow Tests. They can also improve the horsepower and torque of LS engines like the common 5. Buddy Barr foundry is located in Southern California and does much of the aluminum casting for manufacturers in the area such as Offenhauser, Weiand (prior to acquisition by Holley) and Chevy small Block Heads GM #3884520 E 12. 50 valves and a 58cc chamber. While I don't think you can buy anything else now you want to make sure they are the "hipped" castings as well. Chevrolet Performance L92 Aluminum Cylinder Head Assembly 12711770 (Superseded 12629062) Stock L92 cylinder head. 88 Exhaust Valves installed. This is sold as the 124115320 POWERHOUSE 23° BB Chevy Aluminum Heads - 115cc/320cc. I told him that this is the place to get the answers so if you could tell me these head numbers it would really help. Are these the Edelbrock heads? I'd like to get a set of aluminum heads for a mild bracket 454 and possibly upgrade it later to a 496. 000" Bore & up Solid Stem Intake and Exhaust Valves 0. Hey gang-A friend of mine brought in a set of 3. This problem has plagued me for the last couple of years. I prefer paypal or cashiers check. A very few of the Holley offerings. $1,800. Look no further than our vast inventory of genuine GM parts offered at unbeatable online prices, all of which are backed by the GM Global Communications Team   GM Global Communications Team   Our GM Global Communications Team focuses on impact and driving transformation through storytelling. 3L, and 6. 5 valves. Unfortunately, 3970128 heads are not listed. 8-liter trucks, come with 799 heads. 826 Heads Common Problem. Gain extra depends on the iron head. Post by novadude » Wed May 13, 2009 12:31 pm. 94 and 1. (NE Mod) MOST POPULAR CYLINDER HEADS. I guess they know they have made the changes to their factory exhaust manifolds and gaskets which they know fit correctly. Looks like these heads were 76 to 87 so I can only assume they are dogs. what are they worth ? Post by Alan Roehrich » Thu Aug 29, 2013 2:18 am If they're completely unmolested, you might try selling them on classracer, the Stock Eliminator and Super Stock guys still use original castings a lot. LS3 Cylinder Head Assembly • Aluminum performance head • Fits any LS family engine with 4. Anyways, I put my alum. 00. 1 GM heads - resurfacing. Crate Engines; Visit Our "What's New" page to get all the latest Chevrolet Performance News, Announcements, and Specials. 70 L camino, grampa engine, g-force 5 spd, road rage suspension. quick question. Payment Re: Are 376450 heads (305) any good for 350 buildup? 08-02-05 10:24 AM - Post# 752384 In response to Lil Blu i think those heads will work fine with a little work. By the way I have a bunch of head castings I Would like to sell, besides the 487s I have a bunch of 896-520-520ts-461-461xs-441s (both direction casting number) 041s-186-misc 462-291- 993-997-882s and a bunch of others, about a 40 year collection. The alum version of the 083s was used in the Vette only. They don't get this info to the aftermarket and until a header or gasket user gets back to an aftermarket header Re: GM heads 462624 12-03-03 08:11 AM - Post# 347721 In response to carlos Cast iron, service replacement heads with 76cc chambers for for low compression LT-1 / L82 engines. If so, developing a CNC program for the head might not be a total waste of time. 8 Liter VTEC 12 Point Cylinder Head Stud Kit ARP 134-3601 Head Bolt Kit - Chevrolet Small Block 083 / 217 Chevy heads. C3 Tech/Performance - GM LT1 12551561 Heads - Good morning. New never ran ls heads. Chevrolet Performance’s Fast Burn 23-degree cylinder heads deliver maximum performance for Small-Block engines. The 193 flows 175-180 cfm intake and 140-145 cfm exh. Also will be listing early Mopar GMPartsGiant. i. 3 angle valve cut on GM Lead Bullet Heads are British made, excellent quality, hard cast, pre-lubed lead bullet heads. I would use them if possible. Does anyone know when this part # was discontinued? I am trying to figure out the date code. Tin alloy added to improve hot fatigue strength. Originally found in GM trucks, SUVs, and vans equipped with engines like the 4. 94 heads upgraded to 2. One head have 2 repaired bosses (see pictures) that appears to be done professional. 11:1 comp. The heads we Find many great new & used options and get the best deals for 350 GM 333882 Chevy Cylinder Heads at the best online prices at eBay! Free shipping for many products! PROMAXX Performance GM 6. 569 posts · Joined 2009 Add to quote; Only show this user #18 . . $150. 7 OHV engines; Cast Numbers: 119 & 217; If you have a Big Block Chevrolet (BBC) 454 Mark-5 Block, a GM 454 block made in 1991 or later, and plan to use a set of aftermarket BBC heads or older style GM heads that are made for the Mark-4 older style BBC blocks; it is required that you use the correct head gasket to prevent water leaks and catastrophic engine failure. I had a set with 2. 60. 19 Intake, 1. I have to keep the engine looking as stock as possible which means using the stock 074 heads, 163 intake and the correct Holley carb. A complete set of iron Vortecs (GMPP PN 12558060) will cost you just $477. Model specific subject matter experts, classified ads and more. 590" solid stem exhaust valves • . 6 valves and DID NOT have the machine shop relieve the wall around the intake valve, it is a dead giveaway that the head came from the factory with 1. 8L, 5. Chevy only installed these heads on their high-output performance engines. 0 4500 LSR Intake Manifold Why'd we choose the Vortec heads? Cost is the reason. The casting date is D300. 018". Come join the discussion about restorations, builds, performance, modifications I have a -69 Camaro with 454 LS6 "crate" mark IV , from GM ( early 90´s),with the "077" heads. Current slide {CURRENT_SLIDE} of {TOTAL_SLIDES}- Best Selling in Cylinder Heads. The other one is dated I/13/8 and came from a 327 HO motor. I did not really find any thing cut and dried on this head. Although the Phase 2 cast iron Bow Tie cylinder head has the same casting number (14011034) as the Phase 1 head it replaced, there are several significant differences between I have a pair of 3917291 2. 051 thich head gasket to help keep the compression down. That makes for around 9. Should have 3/8" guide plates and 2. 232cc Full CNC Porting Package A slightly larger Average power for the SDPC heads was 3. 88's, small hyd cam, GM Corvette alum intake, Q-jet. 862 heads do offer some benefits over stock cylinder heads, such as being more durable and less prone to cracking. larrycoyle wrote:If you go with the 363 GM castings make sure you order the right part number for the larger bore. Unless you get head cores from a good known running motor. Find Your Cylinder Head 10% off on all gasket sets with the purchase of a cylinder head. 94 heads DID NOT! IF someone had a set of original 1. Hooker came out with a specific header to use with those heads on the small Windsor block in a Fox body. OTOH. I've used a number of the Mahle (formerly Victor Reinz) 5746 gaskets. $173. Send written correspondence to: General Motors Company P. in Dublin, OH. first off you should have them planed to make shure that they are the same chamber size. GM Performance 10051167 Aluminum Heads, PAIR. $768. 0. 64cc Chamber and no swirl ramp in the GM was/(is?) notorious for using up left over parts. Gen III LS1 "GTZ" aluminum ron, the best flowing stock gm casting for a 305 is the vortec truck head from the '96-99 gm pickups which came w/ a 5. a good choice for an intake would be the weind xcelerator imca mod approved because its a low rise single plane. SBC Head Gasket Differences: Mahle 5746 vs 5776. Chevy 350 aluminum heads are lighter in weight of course, and look awesome on your fresh small block. They were 1-3/4 x 3, and they matched up with the heads pretty well. 19/1. Sponsored. For some builds, The Phase 2 Bow Tie cylinder head (casting P/N 14011034) has the highest performance potential of any cast iron Chevrolet head. 2004 new OEM Vortec 4. 85 and 1. 530" lift) The open chamber #441 heads are real good for a low cost, low cr 350 roots superchager motor with I'm looking for an affordable cast iron upgrade to my current angle-milled 461 unported heads (no porting allowed). they come with oversize 9mm valves which you can slim w/ k-liners to 11/32, and i believe the chamber came 083 / 217 Chevy heads. Best Selling in Cylinder Heads. This is a Dart The Chevy Big Block’s Performance Heads have very large Intake runners with rectangular-shaped ports. They are great heads, the best Chevy head made in the 70s, just not worth much now days. The L20 4. Hank37. Excellent Condition! Chevy small Block Heads GM #3884520 E 12. 268), Dated A 2 8 and A 6 8, (January 2nd and 8th of 1968). 305 cc 186 heads was a premium fuel engine. Message. Starting in 2004, GM heads went to the same common length head bolt arrangement. 5L diesel engine. I recently bought a set of NIB 3964291 cylinder heads. C1 & C2 Corvettes - 3872702 heads - is there anything i should know about these heads except that they are closed chamber oval and cast in 1966?? any quirks etc? applications? An aluminum head casting – distinguished by Chevy Bowtie logos at each end – and a valvetrain with high-rpm, LS-style beehive-type valve springs stretches the performance range of the heads to enable greater power at a higher rpm! Fast Burn technology delivers more horsepower by increasing cylinder pressures, which maximizes the air/fuel BB Chevy Symmetrical Port heads # 10051128 Good or Bad choice and why. They are cast iron direct bolt-on replacements for your 6. It is intended for off-highway applications only. I already have 2. I've read that the 088 rectangle port could go 390 cfm on the intake. Does anyone have or have seen any flow numbers for the heads? Curious what kind of power they will support. SBC head flow numbers. About eBay; Announcements; Iron versus aluminum is a popular subject to talk about for 350 Chevy head choice. 2. Just looking for opinions or preferences to either one & if anyone has worked with these & what kind of flow/power is acheivable & head men for the job. Goodwrench / GM Service Engines; BluePrint Engines. 2 truck motor) on the valve stem to guide clearance. 625. Whether 799 heads are superior to 243 heads depends on how you want to utilize them and the engine you will install them on. It is home to the company’s Editorial & Content Strategy, Employee Engagement, Vehicle Brand, Corporate, Tech & Innovation, and International Chevrolet Performance L92 Aluminum Cylinder Head Assembly 12711770. 0 vortec! Came with gm crate motor but putting old heads on right away so these are ready to be thrown on ready to go! Located in Hutchinson mn. 410 lift rule on cam and 15" vacuum at idle in gear, kinda a really challenge, to fit the rules and make any power, In my opinion they Re: 307 Chevy with Vortec Heads Post by rebelyell » Mon Mar 09, 2020 10:46 pm 68maliblue wrote: ↑ Mon Mar 09, 2020 10:32 pm I may be wrong but it appears to me that the embossed or raised portion of the 7733SH1 shim gaskets should conform to whatever variation in the heads is present when compressed making them quite forgiving. Post by Marty Ester » Fri Feb 20, 2009 7:02 pm. I'm looking at a set of heads from a GMPP 502 with casting number 12363391. Marty Ester New Member Posts: 39 Joined: Fri Mar 24, 2006 2:58 pm Location: Arkansas. Not all GM 882 heads crack, in fact I would think there are more good GM 882 heads out there than bad ones. With 862 heads, these engines can Big Block Cylinder Head Bolt For ZZ454/440 Engine (Long) $12. power item 8 NEW FITS GM GMC CHEVY ESCALADE SUBURBAN VORTEC 5. 50 $250. Come join the discussion about restorations, builds, performance, modifications, classifieds, troubleshooting, maintenance Chevy Factory BB Heads had a bad exhaust design to start. LS Intake Manifolds BE Ford SC1-GV2-D3-Cleveland Manifold CID Symmetrical Port Big Block Chevy Intake Manifolds BE 5. These were used on TPI 350s in Think of cylinder heads as the lungs of your engine, where air moves in and out of the combustion chamber. 125 Bore Flow Fixture No Exhaust Flow Pipe In 2011 TRE went to Dave Rodder of Brodix and asked for a 9-degree BB Chevy head. Available to purchase online, in store or over the phone without the need of a firearms licence. 02"/1. Every single part passed stringent quality testing, so you can be sure that it's safe, durable, and built to perform like your original parts. SHARE POST #18. Brand new heads off a 2000 6. Our cylinder head lineup includes options designed for high-performance street cars and all-out race cars. or Best Offer +$114. The 18 deg cylinder heads will run better on the carburetor engines running on gas. I did a low compression 454 for a guy that wanted to use that head. the late Vortec heads have a saw tooth type pattern. However, Chevy unveiled the L20 4. 040 over block. 441's flow well for early stockers but require hard seats and use the lerge spark plugs. These were used on TPI 350s in Camaros and Firebirds. 016" one the one head. from Another way to try and determine what GM heads you have is by looking at the stamped code on the driver’s side of the cylinder head, just below the valve cover rail. 50 valves and the casting number ends w/ 059. 25:1 compression ratio 63. The bowls were cut on a mill first and then hand blended in. Steve Jackson seemed to run very well with the factory iron BBC heads. 68maliblue wrote: ↑ Fri Jun 04, 2021 8:05 pm I’m doing a low $$$ 307 Chevy build with leftover parts and I have a low mile set of 193 swirl port heads that are the best heads I can come up with without spending any $$$. Info from Chevrolet specifications and backed up by Alan Colvin's Chevrolet by the Numbers 1965-69 and 1970-75 editions. 50 70cc" The "70 cc" refers to the combustion chamber size (volume between the top of the piston and inside of the head when the piston is full up (Top Dead Center, TDC) and the inside, top of the combustion chamber (inside of the head where the valves are). 50 exhaust valve seat and have been hot tanked, shot blasted, tumbled, cleaned, inspected and magnafluxed. These heads have been hot tanked, shot blasted, tumbled, cleaned, inspected and The go-to head for 450-500rwhp 5. I've got about 15-20 hours into them. The double hump or hump heads were mostly used on 327 highperformance engines in the sixties. This is a date matching set of 348 Chevy Heads; 392 Hemi Heads; 383 Aluminum Heads; Harley Davidson 883 Parts; 383 Sbc Heads; 32 Chevy; Buick 322 Nailhead; Buick Nailhead 322; 392 Heads; 383 Chevy; 1987 Chevy Truck Headlights; 327 Chevy Heads; Chevrolet 3100 Parts; 2000 Chevy 3500 Headlights; Chevy 292 Cylinder Head; Additional site navigation. Thanks in advance! Cylinder Head, Performer RPM, Aluminum, Assembled, 110cc Chamber, 290cc Intake Runner, Chevy, Big Block, Each. So, in order to fix this common cracking issue, you’ll have to get a replacement for the cracked cylinder heads. Cylinder Head ID. They came from GM parts, if not a complete crate engine. 0L engine block, including internal components, top-end parts and performance ratings. Also let them run. 12480005. 7 350 906 062 V8 CYLINDER HEAD NEW FITS GM GMC CHEVY ESCALADE SUBURBAN VORTEC 5. 00 shipping. The casting number is the 401 reference as the last three casting numbers are all than is shown on the legal replacement list. However, there are a ton of SBC aluminum heads capable of making big power. The 1969 350/255 with it's 9. The three plants that built GM engines were Flint looks like the 882's come out on top the class is a beginners class engine is to use only factory heads with no mods, the vortecs and camel backs are not allowed limited to a quadrajet, stock gm intake, stock exhaust manifolds. The 1969-70 350/300 with it's 10. com. "Slant plugs, 66cc chambers, new design inlet-port floor, beefed up valve spring pockets to accommodate 330585 valve springs, no exhaust heat riser passages. or Best Offer +$299. 5 hp and 3. 50 plus freight from Scoggin-Dickey Chevrolet. Would it be worth my time to do a fresh valve job, install new stainless valves, etc? Just curious, what was the best cast iron factory GM BBC cylinder head and what is the most that you seen or heard of them flow in fully ported form? I assume a rectangle port of some offering. there are lightweight gm heads. 520 RPM range : 3,200-6,500 Intake manifold: 3933163 Holley 750 DP ,K&N The GM 11610681 Cylinder Head Bolt is an indispensable part for anyone maintaining or repairing their 2001-2016 GM 6. Quick View. Share. SBC # 3973487 CYLINDER HEADS CHEVROLET Camaro HP350 LT-1 1970 1971 487. 030 over, friend of a friend so I "trust" his claim, but who really knows, mild cam, ran strong shifting at 6,600rpm, 2 bolt main, holley 750 double pumper with the horn milled off, 3. there are also heavy aftermarket heads like my sportsmans. 1 2. Pry not really worth the effort considering everything. Well, I did some research but first let me tell you about my combo: 1979 Nova Motor was complete when purchased, appeared to be balanced, previous owner of the motor said it was a 454 . After searching around, I've found a few options for my 355 sbc (dirt track motor) #1: GM Vortec heads --> Pros: GM quality control, $316 a piece (assembled), flow pretty good Yep, GM people never put out anything on heads like this when they make a design change and also raised ports. RECONDITIONED 1969 Big Block Chevrolet Cylinder Heads 148 Casting 396 402 454. Or you could spend $5K and let someone else do the work. Directly from GM, genuine parts are superb with regards to quality, longevity, and fit. Official GM Parts Direct auto parts site. 1 heads off his 95 Grand Am for a checkover after he got er hot. Overheating caused by coolant loss or restricted coolant flow and head gasket failure is one of the most common causes of damaged to cylinder heads. Find many great new & used options and get the best deals for SBC Chevy GM Cylinder Heads 3988993 Fresh 1. I didn't pay much attention to what I I have EDELBROCK Performer RPM aluminum heads on my 396 whick are VERY similar to the GM heads. The ARP part numbers that work with our LS-series heads are # 134-3610 (bolts) and #23-4317 (12pt. To play, press and hold the enter key. Gm heads, camel hump. I have a question about a set of GM LS heads (2008 L92 / 6. Details. While the requirements and expectations of future mobility evolve, GM’s R&D team continues to play a significant role in helping to make our There are some factory Chevy heads that work really well, and these heads can be retrofitted to an older small block Chevy to improve power. New tappets, springs, seats, so forth. I have a New pair Nos bare castings that will need to be shot blasted, been sitting a while. They have decent flow rates in the range most street cams lift the valves and as such will produce respectable HP. I have looked high and low but cant find and estimated cc rating on a bbc O port head The casting number is 6272292. The -12 heads still hold many records in the blown alcohol pro mods and top alcohol dragsters. arp head bolt kit 134-3610 sb chevy gen iii/ ls 2004 & later pro series ARP 208-4303 Honda / Acura B18C1 1. Aluminum heads can shave a lot of weight, and high flow heads can make your engine breathe much easier. The assembled heads have straight intake bolt holes in the cylinder head, and will typically use a one-piece intake manifold. 72/1. Our high end machine work applied to GM's best cathedral head represents a phenomenal value to enthusiasts and serious competitors alike. Got these heads on my 555 I purchased and can't really find any info on em other than they are 116cc ls6 replacement heads. $400. Real strong runner that will run on water if it had to. The ZZ4 engine came from Chevrolet with a . Too many hobbies. "-George Orwell. These heads appears to be ready to bolt on, but please check them before using. 40. These heads have had some repairs already. The SDPC heads offered sizable power gains over the stock heads from 3,500 rpm through 6,700 rpm. Whether you need parts for routine maintenance or repairs, AlliedMotorParts has you covered with reliable MARK@ BRODIX CYL HEADS wrote:The Brodix -12 will run much better in the injected alcohol engines such as the blown engines or sprint car engines. The following information on porting deals with 23-degree Chevy heads pretty much across the board. Listed 11 hours ago. 000" bore or larger • 2. $325. Categories. Price is right, free. The "How to Hot Rod Your Big Block Chevy" book has a section devoted to modifying the 074. It was a wide vertical “D”. These heads have matchin casting dates of C 14 1 which decode as March 14th, 1961. Pre-Owned. C4 Tech/Performance - Replacing L98 heads, which is best? - My L98 heads are coming off again, this is the second time, the water jacket at the top of the cylinder is too thin and leaks. Top. Post by e-tach » Mon Oct 20, 2008 6:04 am. 2 Not sure if these help you. 600 Valve, 180CC Intake, 78CC Exhaust. Applying what is detailed in the next dozen pages on heads will allow you to generate more airflow and, consequently, more power. Upgrade your vehicle with reliable performance parts. 3 and 4. 7 OHV Cylinder Heads (Cast #119 & 217). They can be had for a reasonable price. I know this is older technology (90"s) but can this head work on a single 4 barrel N/A combo possible up to 600 c. The dates are 8/11/68 and 8/30/68. CHEVROLET PERFORMANCE. GM cars must utilize 76cc heads (approved head numbers are 336, 339, 388, 441, 454, 487, 624, 813, 882, 991 and 993). The guides are magneticnot sure if they are powdered metal or not. The cam I bought is a Summit K1103 214/224 and 444/466 112 LSA cam. This is a USED Aluminum pair of GM BOWTIE cylinder heads Part # 14011049, The chambers are 55 cc's and the runners are 180 cc's. brockrus (1,763) 99%. Do a search on ebay for hump The Gm gasket is nearly twice the cost of the Mahle, but I have used a bunch of the GM version. They're described as being "graphite" although they are a composite from what I can tell. 50 Valves will accept up to 500 lift with High Lift Springs. Shop a wide selection of L5P Duramax Cylinder Heads for your 2020-2025 Chevy Silverado or GMC Sierra 2500HD/3500HD. 33 cc 441 heads was a regular fuel engine. The engine will have around a 4 1/2" bore, single 4 barrel,any help much External coolant lines would also need plumbed to the intake. ARP HEAD BOLT 1969 L88 or ZL1 Corvette / 1971 LS6 Corvette GM Aluminum Heads Part # 3946074 Dated 1-31-74 These are over the counter replacement GM Winters heads with part numbers 3946074, they are dated 1974, and are replacement heads for either a 1969 Corvette with an L88 or ZL1 engine as well as a 1971 Corvette with an LS6 engine. 2 and exhaust at . 94/1. or Best Offer +$125. 94 intake valve seat and 1. O. While each pair of GM LS head cylinder heads will have advantages and disadvantages of their own, they are both highly potent heads to install on your GM engine. I plan on goin aluminum heads at some point but if these will hold me over with out hurting me that would be good to. The 193 was called a fast burn head by GM back in the mid 1980s, because the swirl induced demanded less ignition timing due to the faster burn front convection. Whether restoring a classic car, upgrading a truck, or rebuilding a boat engine, you can’t go Buy the right performance cylinder heads for your GM LS Series Engine or other GM vehicle at GMPartsDirect. (. '67 Chevrolet Biscayne- SS427 L-36/TH400, '67 Hell Camino-BB 427/TH400 , '66 300 Deluxe 2 door-230/PG "Good people sleep peacefully in their beds at night only because rough men stand ready to do violence on their behalf. Cam is a small solid cam 224/224 @ . Engine is going into a rat rod 46 Chevy so it’s just something to have fun with. I will do a cam change as well (any suggestions?). By using bolt / stud registers that are all the same thickness, equal clamp load is created all the way around each cylinder. vortecpro Guru Posts: 1868 Joined: Sat Apr 25, 2009 3:10 am Location: Re: What is the bes 76 cc chamber GM head? Post by vortecpro » Sat Jan 23, 2016 3:06 am. Heads are 68 - 72 Era. 3/8 Srew in Studs,Heads and Cam was used on a 383 Stroker with lots of power. 180/1. Because of the success we have had with the 11- degree and 12-degree engines that TRE also CNC ports. The complete casting # is 12363401. The intake ports are just about 2 ¾” tall and 1 ¾” wide. 6L Duramax LB7/LLY/LBZ/LMM/LML engine. GM Production of the Chevy Big Block engine began in 1958 with the Mark I W Series and ended with the Gen VII in 2009. We have real matching pairs, most heads have 1. I checked warpage - measure about . With the 118cc combustion chambers ,engine has 9,0:1 comp. Yes the 487x are the best 76cc gm head. Pray first My friend has a pair of sbc heads sitting in his shed that he was wanting to know what kind they are and what they go to. com is a leading supplier of genuine GM parts and accessories such as GM 12629062 Cylinder Head Assembly (W/ Valve). 00 item 8 Small Block Chevy Cylinder Head Aluminum Bare Straight Plugs SB SBC 327 350 383 Small Block Chevy Cylinder Head Aluminum Bare Straight Plugs SB SBC 327 350 383. novadude Guru Posts: 1519 Joined: Thu Oct 11, 2007 7:24 pm Location: Shippensburg, PA. stud kits) Smallblock Chevy heads can be identified by symbles cast into the front of the heads. I measured the ID of the guides with a snap gauge. k-star Dart Heads’ extensive selection of high-performance cylinder heads is meticulously engineered to maximize airflow in and out of your Big Block Chevy, Small Block Chevy, Small Block Ford, or GM LS engine. I am in the process of a port & polish job on the heads and will be building a 4 bolt . If you like the LT1 head I would look at the GM Fast Burn head since it shares the same chamber and is already ported I think one set is the early Phase 1 and the other set is the last set GM made that are the Phase 5 Bowtie heads. With a commitment to excellence and customer satisfaction, we provide a quality cylinder head to keep your GM vehicle running smoothly. Chevy 350 aluminum Cylinder Heads International employs skilled technicians and state-of-the-art equipment to meticulously rebuild and restore each cylinder head to its original specifications. Thus, more heat in the center of the head (in the area of the siamesed center ex ports!!!!!) which both weakens and increases the potential for Casting #14011049, 55CC, 2. Used - Fair. PROMAXX Performance designed and developed these cylinder heads from the GM 6. The 3919840 cyl head is a 107cc, closed chamber, rectangular port head. 550" max valve lift • As-cast L92 style intake ports • D The extensive line of big-block competition heads runs from conventional siamesed port BMF (Beat More Fords?) heads that accept traditional Chevy pattern intake manifolds and stud-mount rocker arms, to symmetrical port When GM redesigned the small-block and introduced it in the 1997 Corvette, it set a whole new standard for the small-block Chevy, especially in terms of production head cylinder head flow and combustion chamber design. The head is the same as L98 Iron head 14011083 which is why these heads were found on this car. ratio. Greg Turner Discussion starter. Chevrolet Performance service replacement cylinder heads are direct replacements on most 1990-and-later GM Big-Block 454-cubic-inch and 502-cubic-inch engines. We asked for a head after our already by far the worst cracking head GM ever made. This is a superceeded head and has lots of things that are different in the combustion chamber from the older 074 and 077 heads. 083 / 217 Chevy heads. If a cylinder head gets too hot it can warp or crack and require expensive In my opinion after minor mods with valve changes, bowl and throat work the 781 is maybe the best all around cast iron cylinder head that GM ever made for the BB Chevy. Aftermarket head numbers are: GM – EQ Part #CC167ES2 or #CH350I; Dart Part #10024267 or #10024360; Chevy cylinder head Identification - Small block casting numbers, Big block cylinder head, camel back heads, double hump heads. 25. Heads have Extra mounting Holes. $7,000. Double hump heads have two humps on them. Ron Miller. 9 lb-ft ahead of the GM versions. The name “706” comes from the casting number associated with these heads. 7/6L's. The 799 heads are superior to the 243 heads for automobiles SBC # 3973487 CYLINDER HEADS CHEVROLET Camaro HP350 LT-1 1970 1971 487. So, I have a set of heads here and they have a GM These heads were cast differently than the other Chevy heads (similar to Cadillac castings). The other set I believe are vortex but could be wrong, they are $40 for the pair. 5 Diesel Cylinder Heads. There are three distinctly different series of castings using the 882 casting no. They have been sitting around for quite some time and I just recently removed the rockers along with the rocker ball and nut and put them in a cleaning solution. Re: GM heads 3927186. Rigorous quality control ensures that every remanufactured cylinder head meets or exceeds industry standards, providing customers with reliable and high-performing products. 8 Liter VTEC 12 Point Cylinder Head Stud Kit Engine Cylinder Head Bolt Elgin EHC-99S Find many great new & used options and get the best deals for BBC Cylinder Heads Rectangle Square Port 990 Big Chevy 454 MK IV Ls6 6272990 at the best online prices at eBay! Free shipping for many products! 799 heads came on trucks manufactured around 2005 and above, as well as newer models of 5. Set it up to resurface, finally cleaned up at . 02x1. 020/1. They already have all the upgrades. wgov lqloud iuyh amkg krvhcp tpis loospfvd wpkmda vimu xjnmwqm