L88 Cylinder Heads

1968 L88 Coupe Written by Tom Glatch The L88 Corvette burst onto the scene with victories at Daytona and Sebring in 1966 and continued at the Le Mans Trials in April 1967, where, in near-stock trim, an L88 clocked 171. The L88 engines came equipped with closed chamber aluminum heads that operated at a 12. Cylinder heads were also aluminum and featured open combustion chambers and round exhaust ports and 2. 462624 casting number. 7% similar) 059 thickthe stack is almost a inch tallthey are slotted for 3/8 and 7/1 6 bolts shipping to lower 48 states only. Looking for Chevy casting numbers ? This is a very complete list of numbers to help identify your Chevy engine block, heads and crankshaft. 1969-70 Chevy Chevrolet Pair Cylinder Heads Aluminum 427 396 454 Gm 3946074. CONTACT US WHEN READY TO BUY, SELL, LEASE, TRADE OR SHIP A CORVETTE 866-838-8363 - 866-VETTENET. The L88 high-rise intake manifold is a key component to making more high rpm horsepower by providing increased airflow to the rectangular port big block Chevy cylinder heads. Notice how close the Stage 1 valves and they almost touch, you can barely fit a dime between them. This 1967 Chevrolet Corvette coupe left the assembly line in May 1967 and was sold new at John Deihl Chevrolet in Jacksonville, Florida. 1967 Corvette. 68 69 - $2,599. The LS3 is a further refinement of the LS2 engine package, taking engine capacity to 6. All heads are made with A356 aluminum and are equipped with high quality components throughout. 125 inch massive tubed stainless headers and Doug'sstainless side pipes. One is date coded 7-17-69 one is date coded 5-28-69. The claimed 430 horsepower is laughable. port matching is a waste of time for the street you want the intake ports smaller then the intake ports of the heads by. Some of these heads that were sold over the counter had imperfections. The valve seats can be machined to 2. Get the best deals on Vintage Car & Truck Cylinder Heads & Parts for Chevrolet when you shop the largest online selection at eBay. This NHRA-legal aluminum cylinder head is a replacement for the L88 Big-Block cylinder heads used on 1968-1971 Corvettes and 1969 Camaros. The LS3 is a further refinement of the LS2 engine package, taking engine capacity to 6. Rebuilt 1967 Corvette 427 3904392 Aluminum Cylinder Head 435 L88 L89 67 1. See our performer Cylinder Heads - Quality Performance Aluminum Street Heads. 560 lift L88 Cam & new PC valve seals installed. In 1988, the L98 was tweaked for the last time on the Corvette. 880" valves 300cc rectangle intake port 110cc exhaust port 118cc combustion chamber Ship to lower 48 states only, no international shipping. A set of Bill Thomas early-design L88 side exhaust headers will complete the revamp. 1967 - 1969 L88 Corvette Engine Specifications The following specifications come from a wide variety of resources. 454 Big Block ~1968 L88 Heads & Weiland Intake ~It's going to be a Beast! ~$2495 Thank you, Michael Runnalls Agent & Owner WeBe Autos Ltd. Free shipping on many items | Browse your favorite brands | affordable prices. BR 7™ LS7 Compatible Series Cylinder Heads/12° BR 3™ Series LS3 Compatible Series Cylinder Heads/15° IK® Series Cylinder Heads/23° Race-Rite® Small Block Series/23° Dragon Slayer Series Cylinder Heads/23° Track 1® Series Cylinder Head/23° Head Hunter™ Series/23° 11 X. 2 litres thanks to a 103mm bore. What set this car apart was a comprehensive racing package that included the big block V8 with solid-lifters and Can-Am-spec cylinder heads. We get a number of inquiries regarding casting numbers, engine build dates and engine assembly/suffix codes. Oval port heads are best for street applications where lots of bottom-end off-the-line power is desired. We are always looking for new castings numbers. Because there has not been a lot of information published on the L88 engines over the years, it was difficult to take the bits and pieces we had from various sources and compile them into an easy to follow summary. 3872702: '65 and '66 oval port, closed chamber, 2. 2L Engine Upgrade Guide: Expert Advice for L92 Mods to Maximize Performance. The all new 1968 Corvette sported a sweeping new design change from previous Corvettes. The Chevy L88 heavy-duty 427 big-block was factory-installed in '67-'69 models, while the original all-aluminum 427ci ZL1 was an option only in late '69s, so the differences depend on which. 462624 casting number. We promote an expansive assortment of Chevy 041 Heads and related items. The biggest and baddest Corvette of them all was the L88 built from 1967 to 1969. All of the springs and rockers added to the heads are top of the line products and I can actually break the tires loose in 2nd gear ftrom a dead start. 2 liter engine was perfectly suited for Cadillac, Chevy and GMC, pickups, SUVs and Hummer H2s. What make an L88 Different ? Engine: • 560+ horsepower • 12. The second owner kept it for 10 years and said he did not liking driving the L88 because of its loud exhaust, road noise, hard start, rough idle, rough ride and radio delete — all traits of a race car, not a daily driver. A L88 equipped 69 camaro (if I remember it was from Nickey - and a swap on an L78 camaro) with a TH400 and a 4. Cylinder heads with oval intake ports are smaller in volume and designed for greater low-RPM torque. The L88 427 was the ultimate expression of Chevy’s production Big-Block power, combining a rigid iron cylinder block with lightweight aluminum cylinder heads and a single, four-barrel carburetor. 880" 11/32" valve. BR 7™ LS7 Compatible Series Cylinder Heads/12° BR 3™ Series LS3 Compatible Series Cylinder Heads/15° IK® Series Cylinder Heads/23° Race-Rite® Small Block Series/23° Dragon Slayer Series Cylinder Heads/23° Track 1® Series Cylinder Head/23° Head Hunter™ Series/23° 11 X. block, heads and injector are mounted on jegs 80064 engine cradle with wheels. Since 1938, Edelbrock has manufactured its core products in the USA for quality & performance. Find 1 Aluminum Cylinder Head for less on our site or store. 19" intake and 1. The 9 means Corvette. 265), for 1967 67 1968 68 and 1969 69 427 430HP L88 and ZL1 BBC Engine. Bowtie Rectangular-Port Aluminum Bare Cylinder Head This NHRA-legal aluminum cylinder head is a replacement for the L88 Big-Block cylinder heads used on 1968-1971 Corvettes and 1969 Camaros. This resulted in weighing more than a cast iron small block engine, but it generates 550hp. Heads were on a correct l88 corvette for a very short period of time. 194679S700001 through 194679S738762. 240 Available - RacingJunk Classifieds features & sells race ready Heads. 88 inch valves, a configuration adopted by the L88 in mid-1969. The modifications boosted horsepower by 5. ! Talk about a rare and hard to find set of heads!This is a pair ofreal dealGM closed chamber aluminum heads for a Big Block Chevy engine. I recently built a hybrid L72/L88 427 for the car using an NOS #289 GM high nickel 4-bolt block, L72 forged 427 pistons and dimple connecting rods, and #074 L88/ZL1 aluminum cylinder heads. The 1968 L88 engine came equipped with emission equipment. These are a assembly with valves and springs ready to bolt on. The big-block engine featured weight-saving aluminum cylinder heads mounted atop a standard Mark IV four-bolt iron block. 1967 Corvette. 5:1 compression, and open plenum allowed the L88 to reach peak power at 6,500 rpm. The L88 427 was the ultimate expression of Chevy's production Big-Block power, combining a rigid iron cylinder block with lightweight aluminum cylinder heads. The Gen VI heads also featured small combustion chambers to further improve the static compression ratio. Chevrolet Performance Bow Tie Race Cylinder Heads are designed for monster-cubic-inch stroked big blocks to maximize their performance. Corvette block $4500 April 2 1970 block plus one head plus correct crank needs work block is perfect also intake manifold. sets $400 Corvette L78 L88 1969 COPO Camaro L88 Corvette block $4500. Over a four year period, this L88 Corvette racked up victories at Daytona, Sebring, and many other venues. Chevy Bbc L88 Zl1 L89 L78 427 Ls6 454 Winters Heads Aluminum 077 074 Bowtie Edelbrock Cylinder - $1,049. The heads have been ported and have mild bowl work. cast #291 magged good Chevrolet big block rough heads $450. The least expensive online catalog for all your Corvette Aluminum Heads needs. This infects the engine oil with carbon residue as well as makes your auto's innards unclean. 2 liter Long Block Crate Engine is on sale. Structurally, the Gen-V small-block is similar to the Gen III/IV engines, including the use of a deep-skirt cylinder block. [NOTE: Looking to upgrade your L92? Read: L92 6. I am trying to get some answers/opinion on something i am investigating on BBC Cylinder Heads. They were notorious for guides dropping out and seats too, due to inconsistencies in the alloy and the casting process. Currently in this article, the first mention of the L88 is this: The ZL1 had specifications nearly identical to the production L88 version of the 427, but featured an all-aluminum cylinder block in addition to aluminum cylinder heads, which dropped total engine weight into small-block Chevrolet territory (approx. The ZL1 engine is an aluminum casting of the L88 engine block and cylinder heads; and steel was used for the forged crank, connecting rods, pushrods, and camshaft. Here is side by side comparison of 1970 455 heads. All of this came off the top of the 509 I purchased for the van. If you checked that box on your Chevrolet Dealer Order Form, here's some of what you got. View Details. This adventure started with a $300 set of used aluminum cylinder heads from a trashed '87 Corvette. They are shaped more like an open chamber head, but with less volume. 265), for 1967 67 1968 68 and 1969 69 427 430HP L88 and ZL1 BBC Engine. Numbered and dated assemblies including the engine and transmission are correct for the car. Chevrolet Performance Bow Tie Race Cylinder Heads are designed for monster-cubic-inch stroked big blocks to maximize their performance. 5:1 compression ratio. The internals were all race quality for the time and as it turns out, all ZL1 engines went through a special "audit" at the Tonawanda engine plant (obviously adding more cost to the bottom line). The heads have been ported and have mild bowl work. Chevrolet Performance Bow Tie Race Cylinder Heads are designed for monster-cubic-inch stroked big blocks to maximize their performance. But may I add this: regarding the cylinder heads, they are the open chamber "Smog" heads without the large valves of the high H. Several months later, not to mention about $8,000, I found just over 80 hp, and about 90 lb-ft. The ZL1 had specifications nearly identical to the production L88 version of the 427, but featured an all-aluminum cylinder block in addition to aluminum cylinder heads, which dropped total engine weight into small-block Chevrolet territory (approx. The valve seats can be machined to 2. The L88 did use aluminum cylinder heads, and you had to cope with a difficult 12. The aluminum oval-port cylinder heads with 100cc chambers breath heavy and bring the compression up to a pump gas friendly but very aggressive 10. Underrated at 430 horsepower, it was common knowledge that upwards of 500 ponies could be conjured out of the engine with the right components. The Hitman BBC 12° Spread Port Head takes the guess work out of trying to find the right cylinder head for the most power. Cylinder Heads L88 Zl1 Bbc CSI Automotive. 88 inch valves, a configuration adopted by the L88 in mid-1969. Find Cylinder Chevrolet for less on our site or store. This 1967 Chevrolet Corvette coupe left the assembly line in May 1967 and was sold new at John Deihl Chevrolet in Jacksonville, Florida. 1967 68 L89 L88 Ls6 Zl1 Aluminum Rectangle Port Cylinder Head 3904392 3-13-67 For Sale Online. They must be kind of rare. 00 Manfrotto 526-1 Fluid Video Head with 528XBK Tripod and Carrying Bag. This resulted in weighing more than a cast iron small block engine, but it generates 550hp. An original and correct "512" cylinder block had to be poked out. This site is for Corvette C3 enthusiasts and has lots of information pertaining to Corvettes built between 1968 and 1982. sets $400 Corvette L78 L88 1969 COPO Camaro L88 Corvette block $4500. These were 427 cubic-inch engines with aluminum heads. Chevy Turn Key 427 Stage 5. The ZL1 had specifications nearly identical to the L88 427, but featured an aluminum cylinder block in addition to aluminum cylinder heads, which dropped total engine weight to around 575 lbs. One type of modification that sometimes occurs is a step-cut to the sealing surface. L88 cylinder heads, cam, intake and Stud Girdle Welcome to Club Hot Rod! The premier site for everything to do with Hot Rod, Customs, Low Riders, Rat Rods, and more. Dang I was hoping for some really good gains with a good set of heads and a relatively cheap bolt on too. Here is side by side comparison of 1970 455 heads. Redlined at 6,500 rpm but capable of higher revs, the L88 engine utilized a four-bolt main cylinder block with forged internals, topped with lightweight high-flow aluminum cylinder heads that. 1 or 7 exhaust port that identifies. [NOTE: Looking to upgrade your L92? Read: L92 6. Cast # 291 1971 ready to run pair heads $1400 1970 454 LS6 block. More of the engines were sold as crate engines to racers. To keep weight down, the engine’s rectangular-port, closed-chamber cylinder heads were cast from aluminum. Should I build a 383 or a 427/434 Stroker? Here are a few good reasons why we think the 427/434 engine is a better choice than the 383 or 406 engine. I know they don't add the power like a set of AFR heads would, however for a set of finished heads for 799. View Details. 1:1 compression ratio. 240 Available - RacingJunk Classifieds features & sells race ready Heads. 1967 - 1969 L88 Corvette Engine Specifications The following specifications come from a wide variety of resources. Power is sent to the rear wheels via a four-speed M-22 “Rock Crusher” manual transmission. If you have some information you want to share with us and our visitors, stop by the Forum and leave us a post! Right now we are limiting the listings to Chevy V-8 blocks, cranks and heads. he will not let me have those cylinder heads no matter how much i beg with him to let me have them. Of course, the L88 package was built around a very special engine that bore the Chevrolet production option L88. Displacing 427 cubic inches and sporting the most radical aluminum cylinder heads and flat-tappet camshaft offered in a Chevy production big-block V8 to that point, the L88 was was rated at a rather arbitrary 430 horsepower. The big-block engine featured weight-saving aluminum cylinder heads mounted atop a standard Mark IV four-bolt iron block. These heads came from a L88-L 427 Corvette or 375 HP. There were 38,762 Corvettes made in 1969. FT Cylinder Heads. That engine, properly tuned, spit out more than 500 horsepower and was used in a variety of racing applications. The L86 V8 engine is produced by General Motors for use in pickup trucks and SUVs. Unlike the McLaren Can-Am team’s engines, which received their experimental linerless blocks directly from Alcoa, the ZL-1 used iron cylinder liners. Chevrolet Performance Bow Tie Race Cylinder Heads are designed for monster-cubic-inch stroked big blocks to maximize their performance. block has a clean front pad ready to stamp your #'s. L88 cylinder heads, cam, intake and Stud Girdle Welcome to Club Hot Rod! The premier site for everything to do with Hot Rod, Customs, Low Riders, Rat Rods, and more. I will click "Agree". The ZL1 engine was essentially an all-aluminum version of the L88, with the aluminum cylinder block and heads offering a tremendous weight advantage for racing. A set of Bill Thomas early-design L88 side exhaust headers will complete the revamp. All of the springs and rockers added to the heads are top of the line products and I can actually break the tires loose in 2nd gear ftrom a dead start. Oval port heads are best for street applications where lots of bottom-end off-the-line power is desired. 1968 Corvette Specs “Corvette ’68… all different all over”. This NHRA-legal aluminum cylinder head is a replacement for the L88 Big-Block cylinder heads used on 1968-1971 Corvettes and 1969 Camaros. Chevy Factory Heads; Big Block Chevy Heads; Engine Quest Heads; Engine Quest 350H; Engine Quest Vortec Heads; Dart Iron Eagle & SS Heads; Ford Factory Heads; Brodix Aluminum Heads; World Products Heads; Cylinder Head Porting Services. 15 L88 race option. This is for ONE, Good Used Original Chevy Corvette L88, (L-88), and Camaro ZL1, (ZL-1), Big Block Aluminum High Rise Square Port Intake Manifold, (GM Casting Number 3933198, GM Group Number 3. Edelbrock Performance Cylinder heads are manufactured of A356 aluminum and made in the USA for AMC, Buick, Chevy, Chrysler, Ford, Oldsmobile, & Pontiac engines. 1967 L88: High Performance 427 rated at 430 HP: 1967 L89: L71 427 with Aluminum Cylinder Heads: 1968 L88: Most Rare of the First Year C3: 1969 L88: Last year for the L88 and all other 427's in the Corvette: 1969 ZL1: Disputed but this is the number claimed by Chevrolet: 1970 ZR1: Special Engine and Equiptment Package: 1971 LS6. If you have some information you want to share with us and our visitors, stop by the Forum and leave us a post! Right now we are limiting the listings to Chevy V-8 blocks, cranks and heads. Most are easy to find once you know where to. Chevrolet unveiled the 2013 Chevrolet Corvette 427 Convertible Collector Edition - the fastest, most capable convertible in Corvette's history - as well as a 60th Anniversary Package that will be available on all 2013 Corvette models. 5:1 compression ratio, an 850-cfm Holley carb, dramaticallybeefed internals, and. Both heads have the same casting number. Closed combustion chambers were used with the first generation of L88 heads, and chamber size poured out at 106. Bbc-oval-272. See our performer Cylinder Heads - Quality Performance Aluminum Street Heads. Most are easy to find once you know where to. 5 mph on the Mulsanne Straight. An identifying characteristic of the 1968 and 1968 L88 engines, the aluminum heads were left bare and the valve covers were chromed. Chevelle with a full factory interior. 1967-1969 Corvette Rare Nos 3925535 L-88 Solid Camshaft 427430hp L88 67 1968 69. One very respected source says that according to records at Tonawanda, no 454 engines came with aluminum heads. Pistons were even higher domed than the L88s, yielding a compression ratio of 12. Cylinder heads with oval intake ports are smaller in volume and designed for greater low-RPM torque. What set this car apart was a comprehensive racing package that included the big block V8 with solid-lifters and Can-Am-spec cylinder heads. Many folks want to know where to look for these Chevy engine casting numbers and codes on blocks and cylinder heads so we decided to put these pages with photos together to help you find them. THE VETTE NET - YOUR MODERN SOLUTION FOR ALL CORVETTE NEEDS. Closed Chamber. Bowtie Rectangular-Port Aluminum Bare Cylinder Head This NHRA-legal aluminum cylinder head is a replacement for the L88 Big-Block cylinder heads used on 1968-1971 Corvettes and 1969 Camaros. Chevrolet Performance Bow Tie Race Cylinder Heads are designed for monster-cubic-inch stroked big blocks to maximize their performance. An original and correct “512” cylinder block had to be poked out. A L88 equipped 69 camaro (if I remember it was from Nickey - and a swap on an L78 camaro) with a TH400 and a 4. • Aluminum performance cylinder head • 315cc rectangular intake ports • Replacement head for P/N 14011076 • Machined for 2. It came with an aluminum high-rise intake manifold and a Holley 850-cfm carburetor. The L89 was the L71 engine equipped with aluminum cylinder heads. Chevrolet Performance Bow Tie Race Cylinder Heads are designed for monster-cubic-inch stroked big blocks to maximize their performance. 194679S700001 through 194679S738762. The heads have been ported and have mild bowl work. 1968 Chevrolet Corvette Stingray L88 Convertible The biggest and baddest Corvette of them all was the L88 built from 1967 to 1969. L89 Camaro Nos 842 Cylinder Heads 7 8 67 Dated Gm Boxes Nos L88. Aluminum Heads This is the heart of the L88 option. All heads are made with A356 aluminum and are equipped with high quality components throughout. 5:1-compression forged aluminum pistons were anchored with full-floating pins. It had all the L72 components plus aluminum cylinder heads. 11 Edelbrock Cylinder Heads Cylinder Head Performer Rpm Assembled Chevy 7. Unused Chevrolet 427 ZL-1 Engine Block Found After 40 Years Via Craigslist The aluminum cylinder heads had 4 extra tapped holes that allowed you to better seal the head gaskets by using four. i also found out from my neighbor that the cylinder heads that were on it were #392 castings. The Corvette LS6 differed from the Chevelle SS 454 LS6 from the previous year not only with the lowered compression ratio, but also by the fact that the Corvette ran aluminum open chamber L88 cylinder heads to reduce the weight over the front tires. In 1969 there were 116 cars built with the L88 engine option. The ZL1 engine is an aluminum casting of the L88 engine block and cylinder heads; and steel was used for the forged crank, connecting rods, pushrods, and camshaft. This NHRA-legal aluminum cylinder head is a replacement for the L88 Big-Block cylinder heads used on 1968-1971 Corvettes and 1969 Camaros. Unlike the McLaren Can-Am team’s engines, which received their experimental linerless blocks directly from Alcoa, the ZL-1 used iron cylinder liners. While the L88 did make 430hp at 5,200 rpm, as GM claimed, it was somewhat short of the peak. Product Details. While the L88 was in its final year for 1969, thicker connecting rods and improved cylinder heads with larger 1. What set this car apart was a comprehensive racing package that included the big block V8 with solid-lifters and Can-Am-spec cylinder heads. Unlike the McLaren Can-Am team’s engines, which received their experimental linerless blocks directly from Alcoa, the ZL-1 used iron cylinder liners. As with any racing machine, the L88 left out the fan shroud, choke and often, the heating system. Cylinder Heads L88 Zl1 Bbc CSI Automotive. Nothing wrong with these heads. And right where you need the take the weight off a drag car - the nose. One was a canary yellow car with sidepipers and the other was a Can-Am white t-top coupe with black ZL1 stipes. 19 intake, 1. 1969 Chevrolet 427 Factory Aluminum Cylinder Heads,Casting #31919842,106. Visit us and save. The Corvette shown here was a factory L71 car with 435 horsepower, but at some point, a set of L88 aluminum cylinder heads was added. This NHRA-legal aluminum cylinder head is a replacement for the L88 Big-Block cylinder heads used on 1968-1971 Corvettes and 1969 Camaros. This #57 L88 Corvette was now the "Rebel Corvette" and IMSA was a perfect fit for this L88 Corvette as it became IMSA's first GTO Champion. Casting number 820 heads are similar to the 215 semi-closed head, but with less quench pad area. The casting number is probably the most significant feature on a cylinder head as it's the hardest to alter. 35 9,440 L88 427ci, 430hp Engine $947. Closed Chamber. > Instruction Link. 880" 11/32" valve. RECTANGULAR PORT - Valve size 2. Engine Gaskets. 1967 - 1969 L88 Corvette Engine Specifications The following specifications come from a wide variety of resources. Find many great new & used options and get the best deals for 69 70 71 L88/L89/LS6/ZL1 427/454 Open Chamber Aluminum Heads GM #3946074 at the best online prices at eBay!. 240 Available - RacingJunk Classifieds features & sells race ready Heads. 880" 11/32" valve. 2518 worst cylinder), line bored,square decked, new cam bearings, new brass freeze plugs and oil galley plugs. Flywheels & Flexplates. Cast iron big block engine displacing 427ci, 4-bolt main bearing caps, forged alloy crankshaft with tuftride coating, aluminum rectangular port cylinder heads which reduced the 427 big-block’s overall weight by 70 pounds compared to the iron heads. An identifying characteristic of the 1968 and 1968 L88 engines, the aluminum heads were left bare and the valve covers were chromed. The biggest and baddest Corvette of them all was the L88 built from 1967 to 1969. Chevrolet Performance Bow Tie Race Cylinder Heads are designed for monster-cubic-inch stroked big blocks to maximize their performance. Receipt for over $600 in machine shop work alone. The big-block engine featured weight-saving aluminum cylinder heads mounted atop a standard Mark IV four-bolt iron block. Production tooling was developed for the block (castings #3946052/53), cylinder heads (#3946074), and intake manifold (#3933198). I ran a set on a 427 in an OT pick up. Cast iron big block engine displacing 427ci, 4-bolt main bearing caps, forged alloy crankshaft with tuftride coating, aluminum rectangular port cylinder heads which reduced the 427 big-block's overall weight by 70 pounds compared to the iron heads. Flywheels & Flexplates. block has a clean front pad ready to stamp your #'s. 454 Cylinder Heads - Completely Redone - '290 LS5 Oval Port Closed Chamber Cylinder Heads. All of the springs and rockers added to the heads are top of the line products and I can actually break the tires loose in 2nd gear ftrom a dead start. A MODERN TAKE ON THE CLASSIC L88 The L88 427 was the ultimate expression of Chevy’s production Big-Block power, combining a rigid iron cylinder block with lightweight aluminum cylinder heads and a single, four-barrel carburetor. Duntov and Richard Keinath further developed the Mark IV 427 engine and introduced the L88 in 1967. 1967 L88: High Performance 427 rated at 430 HP: 1967 L89: L71 427 with Aluminum Cylinder Heads: 1968 L88: Most Rare of the First Year C3: 1969 L88: Last year for the L88 and all other 427's in the Corvette: 1969 ZL1: Disputed but this is the number claimed by Chevrolet: 1970 ZR1: Special Engine and Equiptment Package: 1971 LS6. Underrated at 430 horsepower, it was common knowledge that upwards of 500 ponies could be conjured out of the engine with the right components. 575 lb or 261 kg dressed). The team felt that this new paint job would be the final step needed for its transformation into a winner. The 4th and 5th numbers stand for convertible (67) or T-Top (37). We would like to thank everyone that has contributed to the data provided on this site. 67 Dated L88 Head #392 1967 REBUILT Corvette 435 hp 3905 391 cylinder heads. so i pull it. 030 all the way around if you do not know where the intake will sit then you can make good stuff in to junk i have did a lot of port work but it all at the chamber front of the valve and. Get the best deals on Vintage Car & Truck Cylinder Heads & Parts for Chevrolet when you shop the largest online selection at eBay. 1969 Chevrolet 427 Factory Aluminum Cylinder Heads,Casting #31919842,106. Build on heritage and reputation and then improved with technology and experience, you can bring your project car to a new level with the ZZ427 and all of the 480hp and 490tq. This L89 was originally assembled from the factory at the St. A detailed explanation as to the location of all vintage Corvette identification numbers is also supplied. These heads are stamped CORRECTLY as 3946074. An identifying characteristic of the 1968 and 1968 L88 engines, the aluminum heads were left bare and the valve covers were chromed. I know they don't add the power like a set of AFR heads would, however for a set of finished heads for 799. These offer improved flow over the early cathedral port LS1/LS2 heads. Cylinder Heads. Should I build a 383 or a 427/434 Stroker? Here are a few good reasons why we think the 427/434 engine is a better choice than the 383 or 406 engine. Product Details. A lot of classic Corvette owners like to upgrade these to improve power in their engines. All of this came off the top of the 509 I purchased for the van. L88 snowflake heads, a mild Comp solid roller cam, Crane stud girdle, RPM AirGap intake w/gaskets and all of the lifters, pushrods and hardware for the girdle. 1969 Chevrolet 427 Factory Aluminum Cylinder Heads,Casting #31919842,106. Flywheels & Flexplates. Long Island, NY [email protected] This L89 was originally assembled from the factory at the St. If you checked that box on your Chevrolet Dealer Order Form, here's some of what you got. 1:1 compression ratio. No matter what you're driving, we have the right Corvette Aluminum Heads for your car or truck. 00 they are a bargain. This head is similar to P/N 12363410 except that the intake ports are as cast, not CNC'd. The ZL1 cylinder heads utilized an open chamber, and since a 12:1 compression ratio is the target, a large dome is needed on the piston. The L88 boasted a stout 12. Aluminum heads with casting number 3919842 were factory cylinder heads for L89 and L88 engines. Nothing wrong with these heads. The 9 means Corvette. cast #291 magged good Chevrolet big block rough heads $450. The lightweight cylinder heads lifted from the L88 racecars took 75 lbs off of the front of the car which resulted in a lower center of gravity, better rear wheel weight bias, and an improved overall power to weight ratio. I am trying to get some answers/opinion on something i am investigating on BBC Cylinder Heads. 125 inch massive tubed stainless headers and Doug'sstainless side pipes. 427 cubic inch V-8 engine with aluminum cylinder heads, Muncie M22 four-speed manual transmission, independent front suspension, single Holley four-barrel carburetor, independent rear suspension, radius rods and single transverse leaf springs, and four-wheel hydraulic disc brakes. well it all been said. 1979 Corvette Specifications - 1979 Corvette Spec Sheet. If you checked that box on your Chevrolet Dealer Order Form, here's some of what you got. Cylinder heads with oval intake ports are smaller in volume and designed for greater low-RPM torque. Also in 1969, Chevrolet built two “ZL1” 427 Corvette coupes. Refinements and new or revised components are used throughout, including a revised cooling system and all-new cylinder heads. This car sounds like an L88! With L88 heads with the solid lifter cam 11 to 1 compression and 2. Chevrolet Performance Bow Tie Race Cylinder Heads are designed for monster-cubic-inch stroked big blocks to maximize their performance. Don't miss this. Edelbrock Performance Cylinder heads are manufactured of A356 aluminum and made in the USA for AMC, Buick, Chevy, Chrysler, Ford, Oldsmobile, & Pontiac engines. What set the car apart was a racing package that included a big block V8 with solid-lifters and Can-Am spec cylinder heads. Find CHEVROLET 7. Of course, the L88 package was built around a very special engine that bore the Chevrolet production option L88. RHS's Kevin Feeney echoes what other experts have said about selecting BBC cylinder heads - the first step is to determine what your customer is trying to accomplish with the engine: torque/hp or the best combination of the two. 194679S700001 through 194679S738762. All of this came off the top of the 509 I purchased for the van. [NOTE: Looking to upgrade your L92? Read: L92 6. The engine is designed to accommodate an engine-driven, high-pressure fuel pump for the direct-injection system. 1967-1969 Corvette Rare Nos 3925535 L-88 Solid Camshaft 427430hp L88 67 1968 69. Rectangle Port Bare Cylinder Heads Aluminum 122cc 330cc Big Block Chevy 454 Bbc. 060-inch to start the project, so even if a set of NOS pistons were available they wouldn’t fit. The L88 high-rise intake manifold is a key component to making more high rpm horsepower by providing increased airflow to the rectangular port big block Chevy cylinder heads. Oval port heads are best for street applications where lots of bottom-end off-the-line power is desired. Four-bolt main bearing caps anchored a forged, cross-drilled and nitrided crank. The 427/434 will accelerate most medium to heavy cars dramatically quicker than the common 383's on the market. Since 1938, Edelbrock has manufactured its core products in the USA for quality & performance. The 1968 L88 engine came equipped with emission equipment. Original 1967 Corvette Camaro Chevelle 3904390 Big Block Cylinder Heads 396 427 $800. 575 lb or 261 kg dressed). The all new styling resembled Chevrolet's Mako Shark II concept car and was a bold new look. An identifying characteristic of the 1968 and 1968 L88 engines, the aluminum heads were left bare and the valve covers were chromed. These are the heads GM listed as replacement pieces for the L88 and the LS6 454. 1966 - 1969 with 4 Barrel Carb (L36) (Low Compression Model) Max Brake Horsepower - 390 @ 5200 rpm Max Torque - 470. Having this spacer can help eliminate hot spots on cylinder heads or engine blocks, keeping your Corvette. The L88 engine was an immensely powerful production engine, and was about as close to a pure racing engine as any Chevrolet had introduced in a commercial vehicle up to that point in time. 88-inch valves. Closed combustion chambers were used with the first generation of L88 heads, and chamber size poured out at 106. 1967 corvette Z28 fuelie heads 202 valves fresh 327 302 I Sept 66 dates 1967 Jan. To start i can buy a set of cast iron 049 cylinder heads ( $350) that have been ported and polished, flow benched, CC'd, the 049 has 112CC combustion chamber 255 Intake and 119 exhaust ports GM Performance oval port aluminum heads (12363392) have 110 CC combustion chambers 290 intake 110 exhaust.