An original and correct “512” cylinder block had to be poked out. 240 Available - RacingJunk Classifieds features & sells race ready Heads. You can't beat the price, though. Louis Missouri plant on Sept. The revised L98 had an output rating of 245 at 4,000 rpm and the torque remained the same. Number Engine; 3917291: 300, 350 Horsepower 327 Cubic-Inch Engines: 3917292: 350 Horsepower 327 Cubic-Inch Engine: 3917215: 390 & 400 Horsepower 427 Cubic-Inch Engines. 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. Corvette Lt1 Aluminum Cylinder Heads Cast 10128374. Aluminum heads with casting number 3919842 were factory cylinder heads for L89 and L88 engines. 2 Gen Iii Iv. L89 Camaro Nos 842 Cylinder Heads 7 8 67 Dated Gm Boxes Nos L88. Shop with confidence. The folks at the local car show will love it!. Find Cylinder Chevrolet for less on our site or store. 19-inches and exhausts were 1. 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. Traco Ported Big Block Chevy Rectangular Port Heads 3964291 Vintage Racing Sweet. The 427 tunnel port engine is one for the books. The difference in the cylinder heads would also be moot if you planned on upgrading to the Edelbrock components, but know the dished pistons in the Gen V will still result in a slightly lower static compression. A modern take on the classic L88 engine. The L88 did use aluminum cylinder heads, and you had to cope with a difficult 12. 1969 Chevrolet 427 Factory Aluminum Cylinder Heads,Casting #31919842,106. The Complete History of Chevy Big-Block Engines The Family Tree Unlike lesser engines, the evolution of the big-block Chevy can be traced back to a prestigious great-great-grand pappy, the high-performance 425-hp L78 396, first available in 1965 Corvettes and Chevelles. It came with an aluminum high-rise intake manifold and a Holley 850-cfm carburetor. 240 Available - RacingJunk Classifieds features & sells race ready Heads. Locate 427 Heads on sale below with the biggest variety of 427 Heads anywhere online. 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. We provide a variety of Corvette Aluminum Heads for your vehicle needs. It was designed as a racing powerplant, with aserious 12. The 1967 Chevrolet Corvette Stingray was the last mid-year model, next year will introduce us to the shark. Heads have been Cleaned, Magnafluxed, 3 Angle Valve Job, Decked, Hardened Seats installed, Valve guides machined for. 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. 15 L88 race option. RPO L89 added aluminum cylinder heads to the already potent 427 cubic in engine. Chevy Turn Key 427 Stage 5. Find Cylinder Chevrolet for less on our site or store. The frame was stiffened and standard rim width went up to eight inches. 5:1 cylinder compression, L88 aluminum heads, and a correct L88 air cleaner assembly. 11 Edelbrock Cylinder Heads Cylinder Head Performer Rpm Assembled Chevy 7. My parts are guaranteed rebuildable. The all new 1968 Corvette sported a sweeping new design change from previous Corvettes. RECTANGULAR PORT - Valve size 2. View Details. Pitt Auto Electric Company has been an authorized distributor for Wisconsin Motors, LLC industrial engines and parts for over thirty years. 1968→1969 Chevrolet Corvette Stingray L88 Coupe. L-82 Cylinder heads Corvette Car Forums. They were notorious for guides dropping out and seats too, due to inconsistencies in the alloy and the casting process. 15 L88 race option. Bargain prices on Cylinder Chevrolet now!. Number Engine; 3917291: 300, 350 Horsepower 327 Cubic-Inch Engines: 3917292: 350 Horsepower 327 Cubic-Inch Engine: 3917215: 390 & 400 Horsepower 427 Cubic-Inch Engines. A real 69 L-88 would not have 840 closed chamber cylinder heads. This is for a NOS, (New Old Stock, GM Discontinued, No Longer Available), Very Rare L-88 Chevrolet Chevy Corvette Grooved Solid Camshaft, (GM Part Number 3925535, GM Group Number 0. The Gen VI heads also featured small combustion chambers to further improve the static compression ratio. FT Cylinder Heads. 5:1 compression ratio, which is unthinkable for a street engine today, so finding suitable pistons was a chore. But may I add this: regarding the cylinder heads, they are the open chamber "Smog" heads without the large valves of the high H. 1967 68 L89 L88 Ls6 Zl1 Aluminum Rectangle Port Cylinder Head 3904392 3-13-67 For Sale Online. This 1967 Chevrolet Corvette coupe left the assembly line in May 1967 and was sold new at John Deihl Chevrolet in Jacksonville, Florida. 427 L88 Corvette Cylinder Heads 3904392. Edelbrock is the most respected name in performance. CONTACT US WHEN READY TO BUY, SELL, LEASE, TRADE OR SHIP A CORVETTE 866-838-8363 - 866-VETTENET. How to Choose Ford FE Engine Factory Cylinder Heads- Build Max Performance for the 332, 352, 361, 390, 406, 410, 427, and 428 Engines and How to Stroke Your Engine. To keep weight down, the engine’s rectangular-port, closed-chamber cylinder heads were cast from aluminum. 2L L86 Features & Specifications. Nothing wrong with these 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. In 1988, the L98 was tweaked for the last time on the Corvette. 1968→1969 Chevrolet Corvette Stingray L88 Coupe. Group 19 - $4,999. What set the car apart was a racing package that included a big block V8 with solid-lifters and Can-Am spec cylinder heads. The 427/434 will accelerate most medium to heavy cars dramatically quicker than the common 383's on the market. Power is sent to the rear wheels via a four-speed M-22 “Rock Crusher” manual transmission. 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. We now have a SAENZ model 680 flow bench which we all enjoy using. You can't beat the price, though. parts1 chevrolet 14015445 1975-1990 ls7 l88 454 bb 4 bolt high performance engine block wcam bearings only. There were 38,762 Corvettes made in 1969. 350 cylinder heads 3991492 1970 up chevy camaro/corvette posted by herxssxchevy Hello I have a pair of 350 cylinder heads for sale, they where off a working 1972 camaro and switched them out for some edelbrock alluminum heads, I dont need these anymore an. And right where you need the take the weight off a drag car - the nose. Some of these heads that were sold over the counter had imperfections. More of the engines were sold as crate engines to racers. for sale 1 1975-1990 gm 454 green block, 2 green gm heads and 1 green gm crankshaft misc. Over a four year period, this L88 Corvette racked up victories at Daytona, Sebring, and many other venues. 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. 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. Much of the myth comes from the old L88 heads cast by Winters for Chevrolet. 427 with Q-Jet that came stock with this '69 Corvette. Still has the original l88 valves and springs. If you didn't have Sunoco 260 fuel in your neighborhood, you were in trouble. First, they were a lot stronger than the Bill Thomas–supplied units that Nickey typically put on. Originally built with an L71 Tri-Power 427ci V8, the car was modified in 1972 with a race-prepared L88 427ci V8 featuring 12. 19-inches and exhausts were 1. 1968→1969 Chevrolet Corvette Stingray L88 Coupe. 1969 L88 Rebel Corvette. 575 lb or 261 kg dressed). These heads have been in storage since 1970. Looking for Chevy casting numbers ? This is a very complete list of numbers to help identify your Chevy engine block, heads and crankshaft. 240 Available - RacingJunk Classifieds features & sells race ready Heads. There were 38,762 Corvettes made in 1969. 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. Long Island, NY [email protected] I am trying to get some answers/opinion on something i am investigating on BBC Cylinder Heads. Aluminum heads with casting number 3919842 were factory cylinder heads for L89 and L88 engines. Find 427 Corvette Aluminum Heads on sale here with the largest selection of 427 Corvette Aluminum Heads anywhere online. RHS Cylinder Heads. The 4 is for the V-8 engine. Nos L88 Zl1 Heads. To keep weight down, the engine’s rectangular-port, closed-chamber cylinder heads were cast from aluminum. Aluminum cylinder heads reduced the 427 big-block’s overall weight by 70 pounds compared to the iron head versions. 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. 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. 1969 Chevrolet 427 Factory Aluminum Cylinder Heads,Casting #31919842,106. Aluminum cylinder heads reduced the 427 big-block's overall weight by 70 pounds compared to the iron head versions. Enjoy the videos and music you love, upload original content, and share it all with friends, family, and the world on YouTube. Just out of curiousity, I've been watching the price for these heads on Ebay. The engine is designed to accommodate an engine-driven, high-pressure fuel pump for the direct-injection system. They were very clean and actually flow better than advertised. BBC BIG BLOCK CHEVY FACTORY ALUMINUM HEADS 3946074 SNOWFLAKE 3946074 L88 L89 Ls6 ZL1 so they would be square port lets buy them for Todd. The classic L88 427 updated for the 21st century Between 1967 and 1969, the legendary L88 was the ultimate expression of Chevy's Big-Block power, combining a rigid iron cylinder block with lightweight aluminum cylinder heads and a single four-barrel carburetor. 88 inch valves, a configuration adopted by the L88 in mid-1969. 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. 2 Dart Block Afr Heads Crate Motor 628 Hp. 1968→1969 Chevrolet Corvette Stingray L88 Coupe. the parts listed below were for a 454 chevy twin turbo engine and bought new for my jet boat in 1985, but never built. View Details. More of the engines were sold as crate engines to racers. If you checked that box on your Chevrolet Dealer Order Form, here's some of what you got. Technically not their own engines but rather cylinder heads that could have been bought over the counter, the round ported heads had ports so big that the pushrods passed through them in protective tubes. Among big-block options was a mighty new L88 version with aluminum block and a nominal 430 bhp. ! 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. Estimated figures will be 175 and up depending on intake, exhaust, flywheel and other parts!** UP FOR BID IS A VERY NICE, JUST COMPLETELY REBUILT. We provide a variety of Corvette Aluminum Heads for your vehicle needs. port matching is a waste of time for the street you want the intake ports smaller then the intake ports of the heads by. 5:1 compression ratio, which is unthinkable for a street engine today, so finding suitable pistons was a chore. 67 Dated L88 Head #392 1967 REBUILT Corvette 435 hp 3905 391 cylinder heads. Selling a set (pair) of aluminum L88/L89 Chevrolet Corvette Winters rectangular port cylinder heads. COPO 427 big block V-8 built to 496 CI. One was a canary yellow car with sidepipers and the other was a Can-Am white t-top coupe with black ZL1 stipes. The only basic difference is the cylinder bore. C3 Corvette 1968-1969 Thermostat Housing Spacer - L88-The Corvette Thermostat Housing Spacer is an integral part of your Corvette's thermostat. Zl1 L88 Chevrolet Aluminum Cylinder Heads Bare Nos. I know they don't add the power like a set of AFR heads would, however for a set of finished heads for 799. Chevrolet Big Block Cylinder Head Casting Numbers. Our L92 or L9H 6. 1969 Chevrolet 427 Factory Aluminum Cylinder Heads,Casting #31919842,106. View Details. All of the rare L88 package parts, including closed chamber aluminum cylinder heads, oversize aluminum radiator, cold air induction hood, heater/defroster delete plates, and special road draft tube are correct. 575 lb or 261 kg dressed). 427 L88 Corvette Cylinder Heads 3904392. Expect to pay a lot of money if you even find a usable pair. block, heads and injector are mounted on jegs 80064 engine cradle with wheels. These are the heads GM listed as replacement pieces for the L88 and the LS6 454. SRP's shelf stock 427 ci open-chamber piston fits the bill precisely. Closed combustion chambers were used with the first generation of L88 heads, and chamber size poured out at 106. Chevrolet Performance Bow Tie Race Cylinder Heads are designed for monster-cubic-inch stroked big blocks to maximize their performance. Free shipping on many items | Browse your favorite brands | affordable prices. Numbered and dated assemblies including the engine and transmission are correct for the car. My parts are guaranteed rebuildable. This one (14011077) indicates a 1969–1971 rectangular-port big-valve open-chamber version for L88, L89, LS6, and. 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. 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. THE VETTE NET - YOUR MODERN SOLUTION FOR ALL CORVETTE NEEDS. 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. A real 69 L-88 would not have 840 closed chamber cylinder heads. 3872702: '65 and '66 oval port, closed chamber, 2. How to Choose Ford FE Engine Factory Cylinder Heads- Build Max Performance for the 332, 352, 361, 390, 406, 410, 427, and 428 Engines and How to Stroke Your Engine. The 4th and 5th numbers stand for convertible (67) or T-Top (37). This 1967 Chevrolet Corvette coupe left the assembly line in May 1967 and was sold new at John Deihl Chevrolet in Jacksonville, Florida. 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. 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. Many alterations have been made to muscle-car era engines, and comparing the numbers is necessary to make sure it all matches, especially with the L88. Much of the myth comes from the old L88 heads cast by Winters for Chevrolet. 3 Gm Gmc Chevy Cylinder Heads 243 Casting Number Ls2 Ls6. 265), for 1967 67 1968 68 and 1969 69 427 430HP L88 and ZL1 BBC Engine. 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). An attempt was also made to improve the Astro Ventilation flow volume, but the results were far from satisfactory. Intake valves measured 2. The frame was stiffened and standard rim width went up to eight inches. Morel lifters. They excel in severe duty, high torque applications and environments. Production tooling was developed for the block (castings #3946052/53), cylinder heads (#3946074), and intake manifold (#3933198). The 427 tunnel port engine is one for the books. Modified aluminum cylinder heads were inserted onto the engine, which allowed the engine to breathe better, and the camshaft was revised. View Details. A cylinder head for an internal combustion engine, adapted to fit two or more adjacent cylinders, is provided with, for each cylinder, two spaced apart inlet valves and outlet valves grouped around a central injector. Still has the original l88 valves and springs. SRP’s shelf stock 427 ci open-chamber piston fits the bill precisely. Original 1967 Corvette Camaro Chevelle 3904390 Big Block Cylinder Heads 396 427 $800. Engine Gaskets. The numbers are from our in-house flow bench. 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. Aluminum cylinder heads reduced the 427 big-block’s overall weight by 70 pounds compared to the iron head versions. Nothing wrong with these heads. Auction Lot S192, Schaumburg, IL 2017. Driving around town no one is going to notice your upgraded cylinder heads & intake, but these are one of the best upgrades you can give a classic C3 Corvette. 2L Engine Upgrade Guide: Expert Advice for L92 Mods to Maximize Performance. Visit us and save. Many people consider the L88 Stingray, manufactured between 1967 and 1969, to be the baddest and biggest Corvette ever built. Find Cylinder Chevrolet for less on our site or store. 3946074 Is Similar To: 016a Unbranded Race Car Rat Rod Hot Fender Shims Thick Aluminum (39. The difference in the cylinder heads would also be moot if you planned on upgrading to the Edelbrock components, but know the dished pistons in the Gen V will still result in a slightly lower static compression. Also in 1969, Chevrolet built two "ZL1" 427 Corvette coupes. Often we hear about aluminum heads being "junk". 1967 - 1969 L88 Corvette Engine Specifications The following specifications come from a wide variety of resources. 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. Original 1966 Corvette Chevelle 396 427 Bbc Cylinder Heads 3872702 J225 K55. The big-block engine featured weight-saving aluminum cylinder heads mounted atop a standard Mark IV four-bolt iron block. 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. One was a canary yellow car with sidepipers and the other was a Can-Am white t-top coupe with black ZL1 stipes. The all new styling resembled Chevrolet's Mako Shark II concept car and was a bold new look. All heads are made with A356 aluminum and are equipped with high quality components throughout. The L88 option upon ordering it automatically eliminated the heater, radio and fan shroud. 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. It came with an aluminum high-rise intake manifold and a Holley 850-cfm carburetor. Gm 14011077 Big Block Chevy Aluminum Cylinder Heads L88 Zl1 Bbc. 427 Heads When you're looking for a new automobile, the places where you can shop are almost endless. 5:1 compression ratio, an 850-cfm Holley carb, dramaticallybeefed internals, and. Yet today, you don't should do that! The idling you do on today's auto burns priceless energy as well as leaves energy residue on the cylinder walls that adhere to it given that the cylinders aren't moving as quickly as they generally do. 350 cylinder heads 3991492 1970 up chevy camaro/corvette posted by herxssxchevy Hello I have a pair of 350 cylinder heads for sale, they where off a working 1972 camaro and switched them out for some edelbrock alluminum heads, I dont need these anymore an. 19" intake and 1. No matter what you're driving, we have the right Corvette Aluminum Heads for your car or truck. 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. 0L/427 Chevy big block Mark IV Cylinder Heads with Aluminum Cylinder Head Material and get Free Shipping on Orders Over $99 at Summit Racing!. The valve seats can be machined to 2. 3 to confirm. 1969 L88 Rebel Corvette. sets $400 Corvette L78 L88 1969 COPO Camaro L88 Corvette block $4500. RECTANGULAR PORT - Valve size 2. 265), for 1967 67 1968 68 and 1969 69 427 430HP L88 and ZL1 BBC Engine. 1968 was a year of bold new design changes for the Corvette. This adventure started with a $300 set of used aluminum cylinder heads from a trashed '87 Corvette. 1967-69 Corvette Nos 3942415/3942416 L88 Bb 7/16" Push Rods Bbc 396 402 427 454. The Gen VI heads also featured small combustion chambers to further improve the static compression ratio. 00 Manfrotto 526-1 Fluid Video Head with 528XBK Tripod and Carrying Bag. 1968 Corvette Specs "Corvette '68… all different all over". Rebuilt 1967 Corvette 427 3904392 Aluminum Cylinder Head 435 L88 L89 67 1. Engine Specifications. The 1969 Corvette brought back the "Stingray" badge although it was now one word. These offer improved flow over the early cathedral port LS1/LS2 heads. 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. Rectangle Port Bare Cylinder Heads Aluminum 122cc 330cc Big Block Chevy 454 Bbc. 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 improved the Corvette’s front/rear weight bias and handling. 1967 Corvette. Both heads have the same casting number. Expect to pay a lot of money if you even find a usable pair. Most are easy to find once you know where to. 0L/427 Chevy big block Mark IV Cylinder Heads with Aluminum Cylinder Head Material and get Free Shipping on Orders Over $99 at Summit Racing!. BBC BIG BLOCK CHEVY FACTORY ALUMINUM HEADS 3946074 SNOWFLAKE 3946074 L88 L89 Ls6 ZL1 so they would be square port lets buy them for Todd. Since 1938, Edelbrock has manufactured its core products in the USA for quality & performance. Cylinder heads with oval intake ports are smaller in volume and designed for greater low-RPM torque. 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!. The Gen VI heads also featured small combustion chambers to further improve the static compression ratio. 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. 880" 11/32" valve. Rebuilt 1967 Corvette 427 3904392 L88 L89 Aluminum Cylinder Heads. All of this came off the top of the 509 I purchased for the van. Estimated figures will be 175 and up depending on intake, exhaust, flywheel and other parts!** UP FOR BID IS A VERY NICE, JUST COMPLETELY REBUILT. so i pull it. 3872702: ’65 and ‘66 oval port, closed chamber, 2. Several months later, not to mention about $8,000, I found just over 80 hp, and about 90 lb-ft. Here is side by side comparison of 1970 455 heads. Heads courtesy of Dennis Wheeler. 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. 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. Most are easy to find once you know where to. We are always looking for new castings numbers. Though most L88s were immediately modified within minutes of arrival when new, in this case the correct emission-control air pump system is present and. 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. View Details. All of the rare L88 package parts, including closed chamber aluminum cylinder heads, oversize aluminum radiator, cold air induction hood, heater/defroster delete plates, and special road draft tube are correct. 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. 5:1 cylinder compression, L88 aluminum heads, and a correct L88 air cleaner assembly. 240 Available - RacingJunk Classifieds features & sells race ready Heads. i also found out from my neighbor that the cylinder heads that were on it were #392 castings. 265), for 1967 67 1968 68 and 1969 69 427 430HP L88 and ZL1 BBC Engine. Chevy Turn. Here is side by side comparison of 1970 455 heads. sets $400 Corvette L78 L88 1969 COPO Camaro L88 Corvette block $4500. 3946074 Is Similar To: 016a Unbranded Race Car Rat Rod Hot Fender Shims Thick Aluminum (39. 19 intake, 1. by George Nenadovich. Custom grind Erson solid lifter roller camshaft. Not true at all. 560 lift L88 Cam & new PC valve seals installed. This classic Corvette refined the new 1968 model with changes that increased horsepower as well as fixing small things that were irritating to customers. Several months later, not to mention about $8,000, I found just over 80 hp, and about 90 lb-ft. You can find vehicles for sale on social media, in your newspaper, and especially at your local dealerships. block has a fresh moly hone at standard(4. A set of Bill Thomas early-design L88 side exhaust headers will complete the revamp. The 9 means Corvette. An original and correct “512” cylinder block had to be poked out. I have a set of aluminum rectangle port BBC heads and aluminum intake with the Winters Foundry snowflake on them. For the 1969 Corvette, the base small-block V-8 went to 350 cubic inches and 300 or 350 bhp. Open Chamber Cylinder Heads Top End Package: Above listed complete set of LMS-OC-UC cylinder heads ( ‘441, ‘487 or ‘993), modified Acid Ported or Stage 1 cast iron intake manifold machined to fit heads, intake manifold gaskets, carb adapter or spacer and a custom ground flat tappet camshaft, ready to bolt on sells for $3,190. An attempt was also made to improve the Astro Ventilation flow volume, but the results were far from satisfactory. The engine blocks were machined to a 4. 3946074 Is Similar To: 016a Unbranded Race Car Rat Rod Hot Fender Shims Thick Aluminum (39. 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. Locate Used Chevy Aluminum Heads on sale below with the biggest option of Used Chevy Aluminum Heads anywhere online. Here is side by side comparison of 1970 455 heads. They were very clean and actually flow better than advertised. By checking various main engine components, such as the block, intake manifold and cylinder heads, you will be able to positively identify the engine. Forged steel connecting rods rode on special bearings, and 12. Rowley Corvette's BY THE NUMBERS contains engine suffix codes, block casting numbers, glass date codes and much more. Our MAGNUM line of cylinder heads for the big block Chevy are available in Oval Port designs with runner volumes of 265cc, 290cc, and 300cc or Rectangular Ports with 305cc, 315cc, 325cc, 335cc, 345cc, 357cc, 377cc and 385cc runners. Technically, the ZL-1 was a $3,010 option that consisted of an assortment of aluminum cylinder block and heads on top of the $1,032. 88 inch valves, a configuration adopted by the L88 in mid-1969. These are a assembly with valves and springs ready to bolt on. For sale 409 engines, 396 blocks heads engines, 427 block heads engines, 454 blocks heads engine and other parts for 1962-1972 Chevy big block muscle cars. 575 lb or 261 kg dressed). This NHRA-legal aluminum cylinder head is a replacement for the L88 Big-Block cylinder heads used on. Oval port heads are best for street applications where lots of bottom-end off-the-line power is desired. C4 Corvette Aluminum Cylinder Heads Center Bolt L98 Sbc Gm Chevy 350 10088113. Morel lifters. 5 mph on the Mulsanne Straight. 2 liter engine was perfectly suited for Cadillac, Chevy and GMC, pickups, SUVs and Hummer H2s. The valve seats can be machined to 2. Only thing I would recommend is to go to the L88 springs. This head is similar to P/N 12363410 except that the intake ports are as cast, not CNC'd. The revised L98 had an output rating of 245 at 4,000 rpm and the torque remained the same. The L71 had cast-iron cylinder heads, while the L89 option added aluminum units. Edelbrock Performance Cylinder heads are manufactured of A356 aluminum and made in the USA for AMC, Buick, Chevy, Chrysler, Ford, Oldsmobile, & Pontiac engines. One very respected source says that according to records at Tonawanda, no 454 engines came with aluminum heads. Looking for Chevy casting numbers ? This is a very complete list of numbers to help identify your Chevy engine block, heads and crankshaft. Several months later, not to mention about $8,000, I found just over 80 hp, and about 90 lb-ft. 67 Dated L88 Head #392 1967 REBUILT Corvette 435 hp 3905 391 cylinder heads. 5-to-1 compression ratio to make somewhere north of 500 horsepower while wearing a huge 850-cfm four-barrel carburetor (though Chevy would, disingenuously, only admit to 430 horses). No matter what you're driving, we have the right Corvette Aluminum Heads for your car or truck. Nothing wrong with these heads. You can find vehicles for sale on social media, in your newspaper, and especially at your local dealerships. 19-inches and exhausts were 1. Corvette block $4500 April 2 1970 block plus one head plus correct crank needs work block is perfect also intake manifold. The top-dog 427 was the legendary,underrated, 430hp L88. "The 2013 model year will be historic for Corvette, marking its. But may I add this: regarding the cylinder heads, they are the open chamber "Smog" heads without the large valves of the high H. It has all the bells and whistles and even gives us information that we didn't even ask for. If you checked that box on your Chevrolet Dealer Order Form, here's some of what you got. well it all been said. Oval port heads are best for street applications where lots of bottom-end off-the-line power is desired. cast #291 magged good Chevrolet big block rough heads $450. The 1967 Chevrolet Corvette Stingray was the last mid-year model, next year will introduce us to the shark. 5 mph on the Mulsanne Straight. One of the biggest improvements on the LS3 was the move to the rectangular port cylinder heads shared with the L76/L98 engine. 00 they are a bargain. By checking various main engine components, such as the block, intake manifold and cylinder heads, you will be able to positively identify the engine. port matching is a waste of time for the street you want the intake ports smaller then the intake ports of the heads by. These are the heads GM listed as replacement pieces for the L88 and the LS6 454. Enjoy the videos and music you love, upload original content, and share it all with friends, family, and the world on YouTube. Driving around town no one is going to notice your upgraded cylinder heads & intake, but these are one of the best upgrades you can give a classic C3 Corvette. Pearse has a hunch that the Nickey-supplied traction bars were swapped out for Lakewood units for two reasons. 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. 1968 Chevrolet Corvette Stingray L88 Convertible The biggest and baddest Corvette of them all was the L88 built from 1967 to 1969. cast #291 magged good Chevrolet big block rough heads $450. 1 or 7 exhaust port that identifies. Our L92 or L9H 6. Engine Gaskets. 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. One type of modification that sometimes occurs is a step-cut to the sealing surface. Aluminum heads with casting number 3919842 were factory cylinder heads for L89 and L88 engines.