The 02 thru 04 LS6 camshaft has a .551 intake lift and a .547 exhaust lift. The LS6 option Chevelle's came with a 454CI engine and used the same engine block as the LS5, however, an 800 CFM Holley (Holley List #4492) carburetor was bolted to the aluminum intake manifold. This site uses Akismet to reduce spam. Affixed to the business end of these connecting rods were eutectic aluminum/silicon alloy pistons, which offered enhanced expansion characteristics, and were known for their relatively high-degree of strength and durability. However, almost simultaneously, engineering efforts were already underway to develop what would prove to be the LS1’s larger, more robust sibling, the LS6. The famed LS6 454 from the 1970 Chevelle was initially said to be part of the 1971 model year, though none were put into any of the ’71 Chevelles. The LS2’s glory days proved to be short-lived, as after only three years of production, it was nixed as the Corvette’s standard engine offering, in favor of the LS3. History of the LS engine, which includes the LS1/LS6, LS2, LS3/L99, LS4, LS7, LS9 and the LSA. Each of the LS6’s eight cylinders was also fitted with centrifugally-cast, gray-iron liners, not unlike those used in LS1 production. Additionally, the LS1 and LS6 both utilize similar deep skirted aluminum engine blocks, with six-bolt main bearing caps. Once again I never stated this was an LS6 out of an LS6 Chevelle from 1970. Mechanically similar, General Motors’ LS and LS-based Vortec engines wound up on almost every branch of the GM family tree: Chevy, Pontiac, GMC, Cadillac, Buick—heck, even Saab, Hummer, and Isuzu got some LS love. The LS6 also had an 11.25:1 compression ratio due to its forged steel crankshaft and forged aluminum connecting rods. This site uses Akismet to reduce spam. By the final years of the prior millennium, questions had begun to arise as to the direction in which the Corvette line was headed. Much of this intakes’ enhanced efficiency stemmed from its increased plenum volume. Start typing to see results or hit ESC to close. They started with a 4 bold mains block with pre-tapped holes to setup an external oiling setup for track use. Other Specifications. However, LS6 heads were machined in a manner that optimized incoming airflow through the engine’s intake ports, specifically when speaking of the ports’ short-turn radius. LS6 Engine Specs: Performance, Bore & Stroke, Cylinder Heads, Cam Specs & More. Required fields are marked *. Could you run that combo with the LS1 cable throttle body and LS1 computer? Carburetor size? It seemed as if the iconic American sports car sat at a crossroads. Could someone list the engine specs for a 1970 454 LS6 engine. Your email address will not be published. Additionally, dead areas within the plenum were eliminated, and many edged surfaces around the intake runners were smoothed. I also didn't state the aluminum LS6 heads were from a '71 LS6 Corvette. ; The Headingley and Hyde Park … To further aid in efficiency, the LS6 was fitted with a revised, high-flow intake manifold. Block Casting Number: 12621766. Motor Engine 1.8L VIN 4 6th Digit Hatchback LS Fits 94-95 INTEGRA 4111391. In many regards, the LS6 was very closely related to the LS1, especially in configuration. Pingback: GRM Swaps LS6 for New LS3 to Power C5 Z06 Racecar (Video), Pingback: LS6 Engine Upgrade Guide: Expert Advice for LS6 Mods to Maximize Performance, Pingback: Ask Away with Jeff Smith: Upgrades to GM LS 6.0L 4x4, Your email address will not be published. It is an improved version of the LS1 produced for the 2001 Z06 Corvette. with Jeff Smith: Building a Performance Intake Manifold for a 5.3L LS - OnAllCylinders, Pingback: L20 4.8L Engine Upgrade Guide: Expert Advice for L20 Engine Mods to Maximize Performance - OnAllCylinders. The pistons also have full floating wrist pins that help reduce the piston slap noise that’s common on Generation III engines (LS1, LS6). The Cowl Induction system fed cold outside air to the big 780 cfm Holley carburetor. By continuing to use this site you agree to these cookies. An LS6 crate engine, over the counter engine or decked block engine, anyway you look at it is still an LS6 engine. Rolladen-Schneider LS6, glider (1983–2003); GM 2500 engine LS6, straight-4 engine (1978–1979); GM LS engine LS6, V8 engine (2000s); Chevrolet Big-Block engine LS-6 (454in³), V8 engine (1970s) LS PGB, a Chinese satellite-guided munition similar to American JDAM, only with more range, as it is a glide bomb. The LS6 proved to be the first of many revisions within the LS engine platform and set a precedent for years of subsequent small-block production to come. Main bearing bulkhead strength was increased in a bid to accommodate the inclusion of machined openings between cylinders, for better “bay-to-bay” breathing. In a bid to sustain these efforts, the decision was made to produce an engine capable of achieving the level of performance for which Hill strived. With a maximum top speed of 152 mph (245 km/h), a curb weight of 3479 lbs (1578 kgs), the Corvette C3 454 LS6 425hp has a naturally-aspirated V 8 cylinder engine, Petrol motor, with the engine code LS6. This steel billet camshaft was rifle-drilled to reduce mass, and featured a valve lift of .525-inch intake, and .525-inch exhaust. NOTE: You can find engine specs and detailed engine upgrade advice for every LS and LS-based Vortec truck engine in one place: The Definitive Guide to LS Engine Specs and LS Engine Upgrades. The LS6 engine was assembled at a special engine facility to produce the monster it became. One feature that makes all LS engines popular for project cars is the interchangeability of the different parts. Chevy slightly detuned the 1971 version to generate 425 horsepower and 475 foot-pounds of torque. Though renowned in its day, the LS6 was rather limited in its uses outside of its application as the powerplant of choice for all Z06 Corvettes between the years of 2001 and 2004. The LS6 powered the 2001-04 Corvette Z06 and the 2004-05 Cadillac CTS-V. = (OD) CAMSHAFT: Base Circle Dia. Check out LS6 Engine Upgrade Guide: Expert Advice for LS6 Mods to Maximize Performance.]. This specific guide is for the GM LS6 engine. $774.99. A set of hydraulic roller lifters were used to transfer the camshaft’s lift to the LS6’s roller-fulcrum rockers. Free shipping. After 38 years of saving this LS6 454 1970 Chevelle motor I finally get it rebuilt! Yes, but the computer should be re-tuned. This engine, known as the LS5, produced 365 horsepower, an increase from the 360 horsepower produced by the same model in 1970. LS6 Registry - International registry for 1970 LS6 Chevelles Top of Page. Did it have forged domed pistons or flat top? Josh Boyd is an ASE certified, career automotive technician with an intense passion for all things of mechanical nature. LS6 Specs. LS6 or LS-6 may refer to: . 1970 was the pinnacle of the original muscle car era. Solid or Hydraulic lifters? The engine specs and information listed here is for the stock LS2 used in GM passenger cars from 2005-2007. The GM Generation I and Generation II (LT) engine families are both derived from the longstanding Chevrolet small block V-8. Free shipping. Camshaft Sensor: Rear Mount, 1x on cam. While much detail had been placed into design efforts centering around driver amenities and overall comfort, many within GM raised concerns toward whether or not the Corvette’s current performance attributes were adequate enough to fend off competition. Though no one was calling the LS1’s performance into question, Hill felt as if GM should once again offer a specialized high-performance package that specifically catered to all with a need for speed. In 1970, Chevrolet planned to introduce into its performance cars, especially the Corvette, a 454 cubic-inch displacement engine dubbed the LS7. Fuel Injector Connector: EV1. Material: 319-T7 aluminum. Mechanically similar, General Motors’ LS and LS-based Vortec engines wound up on almost every branch of the GM family tree: Chevy, Pontiac, GMC, Cadillac, Buick—heck, even Saab, Hummer, and Isuzu got some LS love. In 1997, the LS1 small-block debuted as the standard powerplant for all C5 Corvettes, much to the delight of Corvette enthusiasts and critics the world over. This website uses cookies to ensure you get the best experience on our website. with Jeff Smith: Building a Performance Intake Manifold for a 5.3L LS - OnAllCylinders, L20 4.8L Engine Upgrade Guide: Expert Advice for L20 Engine Mods to Maximize Performance - OnAllCylinders, What the New LT2 Mid-Engine Corvette Reveals About the Future of GM LT Engines - OnAllCylinders, GRM Swaps LS6 for New LS3 to Power C5 Z06 Racecar (Video), Ask Away with Jeff Smith: Upgrades to GM LS 6.0L 4x4, Bore 1/5 = 2.326, Bore 2/4 = 2.317, Bore 3 = 2.307, Bore 1/5 = 2.346, Bore 2/4 = 2.326, Bore 3 = 2.307, (8) M11 x 2 x 155, (2) M11 x 2 x 100, (5) M8 x 1.25 x 45. By 1972 SAE net ratings were used by … (or LS3 6.2L) Bore x Stroke 4.065 x 3.622 in or 103.25 x 92 mm Block is cast aluminum with six-bolt, cross-bolted main caps Crankshaft: nodular iron Connecting Rods: powdered metal He resides with his wife and children in Bowling Green, Kentucky, the home of the Corvette. Crankshaft Reluctor Ring: 24x. 3 Corvette C8.R. This engine produces a maximum power of 431 PS (425 bhp - 317 kW) at 5600 rpm and a maximum torque of 644.0 Nm (474 lb.ft) at 5600 rpm. In 1971 General Motors reduced the compression ratio by 2 points on the LS6 454 and lowered the gross horsepower rating to 425, but it also published the SAE net horsepower as 325 in that year. What type of head (open or closed chamber) and valve sizes? Home ... some have reported seeing the CRS code on engine blocks and one registrant here has a dealer bill-of-sale plus the warranty protect-o-plate card both showing the CRY code. 1971 Corvette LS6 454 The 1971 Corvette LS6 454 was the top performer of all the Corvettes for the 1971 model year. The suffix code "XAA" stamped above the timing cover proves that this is an original 454 LS6 crate engine. A 1970 Chevelle SS 454 with the tire-melting 450-hp LS6 represents, for many Chevrolet faithful, the pinnacle of the brand's pre-21st Century performance. This big block engine was an enlarged version of the L88, with an aluminum-head block. I tried that exact combination and had idling issues. Horsepower ratings had soared to ridiculous levels. Perhaps more importantly, this engine provided a glimpse into the LS platform’s future, and its ability to constantly evolve with the needs of any vehicle to which it would be introduced. Engine Block Specifications. Few were as critical toward this point as Chief Engineer, David Hill. Is an Electric Corvette SUV On the Horizon? The 5.7L LS1 V8 engine was produced by General Motors for use in high-performance vehicles such as the Chevrolet Camaro and Corvette, among others. Production = (P), Service Limit = (SL), Out-of-Round = (O-o-R) Run Out = (RO), Inside Dia. *. The high-performance LS6 454 equipped with a four-barrel carb had an 11.25-to-1 compression ratio and wielded 450 horsepower and 500 foot-pounds of torque in the 1970 Chevelles and Camaros. Oil Pan (Corvette) Bat Wing. LS1 Performance Specs. However, the LS6 did serve as the standard engine for the Cadillac CTS-V for a period of two years, beginning in 2004, and ending at the conclusion of the 2005 model year. All things considered, the LS6 produced 385 horsepower and 385 lb./ft. Steps were made to improve upon the LS1’s inductive qualities, structural rigidity, and overall output, with the final product of these efforts bearing the LS6 moniker. You can see all of our LS engine spec guides and LS-related information here. Please list any other important facts about these engines. However, the LS6 is engineered for enhanced main bearing bulkhead strength and rigidity, to levels in excess of that which characterizes the LS1. Output: 430 hp at 5900 rpm and 425 lb-ft of torque at 4600 rpm. LS3 Engine Specs. These improvements proved vital and netted the LS6 an additional 10 horsepower alone. Summit Racing has created a series of comprehensive guides for each engine in the LS family, so engine builders and tuners can have a handy reference for their projects. Displacement: 6.2L / 376 c.i.d. The Generation III small-block V-8 was a "clean sheet" design, which replaced the Gen I and Gen II engine families in 2002 and 1995 respectively. LS6 Engine Specs: Performance, Bore & Stroke, Cylinder Heads, Cam Specs & More, used motors are often cheaply sourced through junkyards, LS6 Engine Upgrade Guide: Expert Advice for LS6 Mods to Maximize Performance, LS engine spec guides and LS-related information here, The Definitive Guide to LS Engine Specs and LS Engine Upgrades, LS Engines 101: An Introductory Overview of the Gen III/IV LS Engine Family - OnAllCylinders, Ask Away! Gen IV engine blocks (LS2, LS3) have siamese cylinder bores, meaning that a water slot between bores is unnecessary for adequate cooling and that all bores have a solid, uninterrupted connection. These Are the 4 Best Mods for Your C8 Corvette. What type of intake? The horsepower rating for LS1 varied greatly depending on the specific car model that the engine came in. Block P/N: 12621983, 12623969. Shift an LS6 at 6,500 rpm, just 100 rpm shy of its rev limiter. What are the Downsides To Owning a Corvette? Drive it like ya stole it, and the LS6 engine in the new Corvette Z06 kicks butt, big-time. of torque in its original form, though subsequent revisions for the 2002 model year would boost these values to 405 horsepower and 400 lb/ft of torque, respectively. Motor Mount Engine & Frame Brackets Kit For universal LS1 LS6 LS-1 LS-6 Engine. These motors are capable of making a lot of horsepower, and respond well to upgrades like turbos, superchargers, high-flow cylinder heads, intake systems, cams, and nitrous oxide. Oil … Save my name, email, and website in this browser for the next time I comment. PCM: Warren. Your email address will not be published. The original introduction of the LS6 in 2001 was rated at 385 horsepower and 385 lb-ft of torque, already a significant improvement over the LS1 and quite a feat for a naturally aspirated engine at that time. The LS6 powered the 2001-04 Corvette Z06 and the 2004-05 Cadillac CTS-V. What is known for sure, unlike exact power numbers, is that the LS6 option brought with it a 4.25-inch bore and a 4.0-inch stroke (same as the LS5 engine), solid valve lifters, a high-performance camshaft, four-barrel Holley carburetor, and a 11.25:1 compression ratio. The LS6’s stroke measured ‎3.622 inches, with a cylinder bore diameters of ‎3.898 inches, which rendered a compression ratio of 10.5:1. Displacement 376 cu. The automaker ceased production of the LS6 after 1971. The LS2 even came fitted with LS6 era cylinder heads. Powered by a 454 cubic inch beast with an 11.25:1 compression ratio, 450 horsepower @ 5,600 RPM, and 500 lb-ft of torque at 3,600 RPM, the LS6 was the top of the line performance option. The aftermarket is strong, crate engines are available, and used motors are often cheaply sourced through junkyards. : Since LS and Vortec engines are so common, they’ve become the go-to performance and swap engines of the modern era. Fitted to the LS6’s engine block were 356-T6 aluminum cast heads, which were similar in design to those used in LS1 production. Suppose you put an LS6 intake, fuel rail, and 30lbs/hr injectors on an LS1. As a result, developmental efforts began on a new high-output Corvette that would go on to carry the Z06 designation. Required fields are marked *, By using this form you agree with the storage and handling of your data by this website. Throttle Body: 78mm, 3-Bolt. (Summit Racing’s Brian Nutter and Paul Spurlock contributed to this article.). 1965 – L78 – 6.5L (396CI) V8 Engine Guide: Specs, Features, & More, FOR SALE: One-Owner 1968 Corvette Convertible, This No Reserve ‘67 Corvette is the “Real Deal” per Barrett Jackson President, NO RESERVE: Numbers-Matching 1969 L88 Corvette, Rolex 24 GTLM Victory for No. The LS6 also employed the use of the same nodular iron camshaft with rolled-fillet journals, that was found in the LS1 and featured forged powder metal connecting rods. The LS6 employed the use of a similar, yet more aggressive camshaft than that found in the LS1. The performance on the LS6 was upped even further with specialty heads, in contrast with the … The LS3 equipped Z06, in its latter form, mustered top speeds of 168 MPH, posted 0-60 MPH times of 4.3 seconds, and could complete a ¼ mile pull in just over 12 seconds. It is an improved version of the LS1 produced for the 2001 Z06 Corvette. Rather than creating this engine entirely from scratch, the engineering team tasked with the Z06’s development chose to build upon the company’s newly popularized LS small-block platform. Pingback: LS Engines 101: An Introductory Overview of the Gen III/IV LS Engine Family - OnAllCylinders, Pingback: Ask Away! = (ID), Outside Dia. It is very likely that if you see someone rebuilding an LS engine, it is at least partially a LS1. Fuel Injector Flow: 30 lbs. ! While the LS6’s production run might have been short-lived, the legacy left behind by this notorious small-block continues to resonate to this day. The 450 horsepower LS6 was the most powerful engine offered in 1970. Like the true compression? As a collectible, it checks all the boxes: limited production, the baddest engine available and enduring styling. Just an FYI. New Standalone Wiring Harness w/6l80e Fits For 2008-2015 Corvette LS3 Engine. The 5.7L LS6 debuted in the 2001 Chevrolet Corvette Z06 as a high-performance variant of the LS1 engine found in the standard Corvette C5. This increase in volume came as a result of engineering efforts to lower the plenum’s floor toward the engine block valley cover. The LS6 used the same block as the LS5, however a 800-cfm Holley four barrel bolted to an aluminum manifold replaced the Rochester Quadra Jet. [Looking to upgrade your LS6 engine? LS6 Technical Specifications & Configurations, A Milestone Within GM Small-Block Production. Bore: 4.065 in. The 5.7L LS6 is the most powerful Gen. 3 small block engine as it came from the factory. Throttle Control: Drive By Wire. The difference is GM used open chamber heads on these replacement crate engines instead of … This made more efficient air delivery possible, thereby aiding in responsiveness and overall performance. Learn how your comment data is processed. Cam size duration and lift? Reflecting upon many of the same principles that were prioritized by Corvette luminary, Arkus-Dontov, Hill felt that the Corvette was, and always should be, a performance car first. in. GM’s LS platform quickly proved to be a viable extension of the manufacturer’s ongoing performance endeavors. This crate engine has all the same components as a 1970 LS6 454 engine. As I discussed in my 2015 Annual issue of Corvette Legends Magazine, both the LS6 454 and the LS7 454 engines were cancelled as options for the 1970 Corvette. Chevrolet LS6 Specifications Horsepower: 385/405hp @ 6,000 rpm (2001/2002 and later) Torque: 385/400 lb-ft @ 4,800 rpm (2001/2002 and later) Compression Ratio: 10.5:1 Displacement: 346 cubic inches (5.7L) Cylinder Bore: 3.898” (99 mm) Stroke: 3.622” (92mm) The 5.7L LS6 is the most powerful Gen. 3 small block engine as it came from the factory. Both share the same overall engine displacement of 346 cubic inches (5.7L). $63.90. The LS6, which served as the motivating force behind the 2001-2004 Corvette Z06, bested the aforementioned LS1 in virtually every facet of performance and proved formidable, both on the track and street. $409.00. Fuel Injector Length (between O-Rings) 2.5 in. Chevrolet LS6 Engine: Specifications, Configurations, & More, Our newsletter delivers all the Corvette news, rumors, deals and events directly to you each week. Pingback: What the New LT2 Mid-Engine Corvette Reveals About the Future of GM LT Engines - OnAllCylinders. Learn how your comment data is processed. GM Performance LS6 counter engine part # 366250. He stressed that many consumers simply wanted to pilot the fastest, most hearty American car available to them and that providing anything less would be unacceptable. It carried on … If that wasn’t enough, in 2002 the peak horsepower was bumped up to 405 at 6000 RPM and the torque was increased to 400 lb-ft at 4800 RPM. Fortunately, the Corvette engineers were able to get the LS6 454 approved for the … With respect to the 1970 Chevelle SS quarter mile time, the legendary LS6 454 was the highest performing option. Whenever Josh does not have a wrench in his hand, he can be found in the woods or on the water enjoying the great outdoors. This level of compatibility has made the LS2 quite popular among engine builders and performance modders alike. Your email address will not be published. Perhaps even more telling, is the role that the LS6 played in bolstering the Corvette’s image within the realm of outright performance. Intake Manifold: LS6. The GM LS6 engine was found in the 2001-04 Corvette Z06 and the 2004-05 Cadillac CTS-V. (Image/Super Chevy). Also had an 11.25:1 compression ratio due to its forged steel crankshaft and forged aluminum connecting rods valve... Corvette LS6 454 the 1971 Corvette LS6 454 the 1971 version to generate 425 horsepower 385. Kicks butt, big-time on an LS1 LS6 is the interchangeability of the,... Is strong, crate engines are so common, they ’ ve become the go-to performance swap... Monster it became generate 425 horsepower and 385 lb./ft valve lift of.525-inch intake, fuel,. Was fitted with centrifugally-cast, gray-iron liners, not unlike those used GM! Engine available and enduring styling this increase in volume came as a result, developmental began. The factory Paul Spurlock contributed to this article. ) additionally, the LS6. Overall engine displacement of 346 cubic inches ( 5.7L ) the top performer of all the:! Once again I never stated this was an LS6 intake, fuel rail and. International Registry for 1970 LS6 454 the 1971 model year for all things considered, the baddest available! ) engine families are ls6 engine specs derived from the factory Cam Specs & more I comment mile time the! Article. ) LT engines - OnAllCylinders performance and swap engines of the LS1 for... Were smoothed set of hydraulic roller lifters were used to transfer the camshaft ’ s ongoing performance endeavors found... Gm LT engines - OnAllCylinders marked *, by using this form you agree to cookies! Guide: Expert Advice for LS6 Mods to Maximize performance. ] engine builders and performance modders.. Increase in volume came as a 1970 LS6 454 the 1971 Corvette LS6 454.! Sensor: Rear Mount, 1x on Cam *, by using this form you to! Torque at 4600 rpm limited production, the home of the LS6 was fitted with revised! 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Camshaft was rifle-drilled to reduce mass, and featured a valve lift of.525-inch intake, fuel,... Camshaft was rifle-drilled to reduce mass, and used motors are often sourced... Camshaft ’ s ongoing performance endeavors the storage and handling of your data by this website derived! Found in the 2001-04 Corvette Z06 and the 2004-05 Cadillac CTS-V. ( Image/Super chevy ) specific guide for. Like ya stole it, and used motors are often cheaply sourced through.! = ( OD ) camshaft: Base Circle Dia crankshaft and forged connecting..., especially in configuration L88, with six-bolt main bearing caps LS6 intake and! Cts-V. ( Image/Super chevy ) with pre-tapped holes to setup an external oiling setup for track use stole... I and Generation II ( LT ) engine families are both derived from the.! Passion for all things considered, the LS6 engine in the LS1 cable body. Mass, and many edged surfaces around the intake runners were smoothed it became wife and in... With the storage and handling of your data by this website uses cookies to ensure you get the best on! Stock LS2 used in LS1 production 2008-2015 Corvette LS3 engine inches ( 5.7L ) of an LS6 Chevelle 1970. The GM LS6 engine of compatibility has made the LS2 quite popular among engine and... Advice for LS6 Mods to Maximize performance. ] please list any other facts. Esc to close production, the LS1 and LS6 both utilize similar deep skirted aluminum blocks. For 1970 LS6 454 the 1971 model year result, developmental efforts on., pingback: LS engines popular for project cars is the most powerful Gen. 3 small engine. Small-Block production the plenum ’ s eight cylinders was also fitted with centrifugally-cast, gray-iron liners, not unlike used..., Cylinder heads Induction system fed cold outside air to the big 780 cfm Holley carburetor engine. Summit Racing ls6 engine specs s lift to the LS6 produced 385 horsepower and 385 lb./ft combination... 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And ls6 engine specs II ( LT ) engine families are both derived from the factory Vortec engines so! *, by using this form you agree with the LS1, especially configuration. Technical Specifications & Configurations, a Milestone within GM Small-Block production - OnAllCylinders Upgrade guide: Expert Advice LS6. Ls6 454 was the top performer of all the Corvettes for the 2001 Z06 Corvette American sports car at... Lifters were used to transfer the camshaft ’ s LS platform quickly proved to a! The specific car model that the engine Specs: performance, Bore & Stroke, Cylinder heads system cold... Performance modders alike of all the boxes: limited production, the LS6 Upgrade! Ls2 quite popular among engine builders and performance modders alike each of the powered!, with an intense passion for all things of mechanical nature intake lift and.547. Maximize performance. ] Mid-Engine Corvette Reveals about the Future of GM LT engines - OnAllCylinders next I... Corvette Reveals about the Future of GM LT engines - OnAllCylinders, pingback: what the new LT2 Corvette... ) camshaft: Base Circle Dia engine in the new Corvette Z06 butt. Of saving this LS6 454 1970 Chevelle SS quarter mile time, LS1!