This engine produced 275 hp and 325 foot-pounds of torque. The LT1 really wakes up with a set of headers, some distributor work and some jetting. Detailed features and specs for the 2020 Chevrolet Camaro LT1 including fuel economy, transmission, warranty, engine type, cylinders, drivetrain and more. LT1 engines are all-aluminum and use Active Fuel Management (AFM) and Variable Valve Timing (VVT). In 1972 the rating decreased again, now to a net of 255 hp (190 kW). I, 5.7L, small block (technically, the first-gen. was written as “LT-1”). The information listed here is for a stock engine. Fortunately for owners of LT1 engines, this material is also used on the little guy 1.255-inch diameter springs. Let’s dive in and compare LT1 vs LS1. The block has been professionally cleaned, prepped and … It is regarded today as one of the greatest Chevrolet Small Blocks, an engine that has been in production since 1955. Updated: 12/07/08 '92 - '93 GM's generation II engine, the LT1, was introduced in '92 in the corvette and was rated at 300hp. Learn how your comment data is processed. In a dynamometer test conducted by Super Chevy comparing a 1970 LT-1 and a 1996 LT1, the old motor produced 353 hp (263 kW) at 5,600 rpm and 392 lb⋅ft (531 N⋅m) of torque at 4,100 rpm, while the new motor produced 350 hp (261 kW) at 5,700 rpm and 379 lb⋅ft (514 N⋅m) of torque at 3,800 rpm. However, the LT1 is not Flex Fuel capable (E85). The LT-1 was also available in the Corvette both as an engine option and as part of the high-performance ZR-1 option. The LT1 camshaft’s specifications lift include: 0.551/0.524-intake/exhaust lift, 200/207-crank angle degrees intake/exhaust duration at 0.050 tappet lift and 116.5-degree cam angle lobe separation. LT1 by General Motors marked the beginning of the line of the Generation II small-block V8 engine family. This is an engine specification guide for General Motors’ fifth-generation LT1 engine that launched in 2014. The LT1 series Gen II small block Chevrolet is very similar to the standard small block. The main difference in the LT1 is the reverse cooling design, which cools the cylinder heads first, then the block. In, Koch, Jeff. Bore 2/4 = 2.326 in. Between 1970 and 1972 only 53 Zr's were produced, making it one of the rarest Corvettes. LT1/LT4 Engine Torque Specifications Camshaft retainer bolt 106 in-lbs Camshaft sprocket bolt 18 ft-lbs Connecting rod nut (1st pass) 20 ft-lbs Connecting rod nut (final pass) 55 degrees Crankshaft torsion damper to hub bolts 63 ft-lbs Crankshaft hib bolt 74 ft-lbs The LT1's iron engine block is sized at 350 cubic inches and has an overall displacement of 5.7 liters. This engine was available through 1997. It has a cylinder bore and stroke of 4 and 3.48 inches, respectively. While the original '92-97 LT1 was not a high-output motor, the reverse is true of LT1 crate engines from Golen Engine. "COPO Gigio - 1970 Chevrolet Nova." It was alot more fun as a hot rod. The original LT4 engine was introduced as a higher-performance engine option in the 1996 Corvette. I drove it as a Hot Rod for a while, then went back to factory stock. It’s the most debated engine in the world, but what about the good ole’ LT1? 5.7L LS1 Engine Vitals; Displacement: 5.7L / 346 cu. In the Camaro, the engine was available only through the Z/28 option. I sold my 70 Z28 that had the original engine in it a few months ago. Save my name, email, and website in this browser for the next time I comment. Holdener, Richard. **** 50 of these were converted into Yenko Deuces. Aspiration: Natural: Introduced: 1997 model year: Discontinued: 2005: Predecessor: LT1 / Gen 2 Small Block Camaro LT1 Z28 Engine Specifications 1970 engine is used as the baseline. In 93 the new 4th gen F-body arrived with the LT1 rated at 275hp. "1970 Corvette LT-1: Best small-block ever?" An LT1 6.2L crate engine is now available. http://www.superchevy.com/how-to/vemp-1008-1970-gm-350-small-block-engine/, https://en.wikipedia.org/w/index.php?title=Chevrolet_LT-1&oldid=988090939, Creative Commons Attribution-ShareAlike License. It had a bore of 4 inches and a piston stroke of 3.48 inches. In, This page was last edited on 11 November 2020, at 00:41. The LT-1 was a Small-Block engine produced by Chevrolet between 1970 and 1972. Spark Plug Gap .033 - .038 inch Firing Order 1-8-4-3-6-5-7-2 The original small-block Chevy (SBC) V8 was built for decades, spanning from the mid-1950s through the 1990s. All PSI Harnesses are Made in the USA. LT SERIES GEN II SMALL BLOCK CHEVROLET INFORMATION. 2017 Chevrolet Camaro | Camaro Service Manual 10049487 | Engine/Propulsion | Engine Mechanical - 6.2L LT1 LT4 | Specifications | Document ID: 4283190 Fastener Specifications Table 1: Single Use Non-Threaded Fasteners/Components Table 2: Single Use Threaded Fastener/Component Tightening Specifications Table 3: Reusable Threaded Fastener Tightening Specifications In 1992, General Motors created the all new LT1 … The lobe centerline is 112 degrees. "1970 GM 350 Small-Block Engine - Clash of the Small Block Titans." Yenko also converted another 125 L65 Novas into LT-1 Deuces. in. What are the LT1 basic specs? In 1970 a Nova could also be ordered with an LT-1 via a Central Office Production Order (COPO). It was the first year that the Z/28 option consisted of a 350 cu in (5.7 L) engine, as between 1967 and 1969 the option gave a 302 cu in (4.9 L) motor. It is also worth noting that some Corvette versions of the LT1 came with a dry sump oiling system. 2014 “LT1” 6.2L V-8 VVT DI (LT1) for Chevrolet Corvette (Image/Chevrolet). 1971 & 72 will be identical except where noted 1971 had compression dropped from 11.0:1 to 9.0:1 by using different pistons and bigger CC cylinder head. Without the LT1’s distinctive front-breather intake manifold, the engine resembles a standard small-block Chevy, but there are still lots of LT1 uniqueness hidden inside. In 1971 the compression ratio was decreased to 9.0:1 and horsepower decreased to 330 hp (246 kW), now the same in Corvette and Camaro. (Summit Racing’s Brian Nutter and Paul Spurlock contributed to this article. Despite the disparity in ratings, there was no difference between the engines. LT1 Wet Sump Crate Engine: 19328728 | Performance lt1 Increasing efficiency, horsepower, and emissions reduction was the name of the game in the late 1980s and early 1990s, and the camshaft-driven HEI distributor on the SBC was no longer effective. LT1 Vs. LS1: A Direct Face-Off of Specs LT1. It was introduced in the 2014 C7 Chevy Corvette. However, the LT1 is not Flex Fuel capable (E85). The LT-1, in 1994, got 17 mpg in the city and 25 to 27 mpg on the highway, depending on transmission selection. With a maximum top speed of - mph ( km/h), a curb weight of 3336 lbs (1513 kgs), the Corvette C4 LT1 has a naturally-aspirated V 8 cylinder engine, Petrol motor. Block and Basics Displacement: 350 cubic inches, 5733 cubic centimeters, 5.7 liters Block Material: Cast Iron Main Bearings: 2-Bolt Centers and Ends (The Corvette LT1/LT4 had 4-bolt mains) Stroke: 3.48" Bore: 4.00" Compression Ratio: 10.4:1 Combustion Chambers: 54 cubic centimeters GM has built three engines designated as the LT1: The new LT1 is the Gen. 5, 6.2L, small block engine used in Chevrolet performance cars. In a dynamometer test conducted by Super Chevy comparing a 1970 LT-1 and a 1996 LT1, the old motor produced 353 hp (263 kW) at 5,600 rpm and 392 lb⋅ft (531 N⋅m) of torque at 4,100 rpm, while the new motor produced 350 hp (261 kW) at 5,700 rpm and 379 lb⋅ft (514 N⋅m) of torque at 3,800 rpm. Why You Want an LT1 Performance Engine Quite simply, it's strong, it can make a lot of power and it goes in easily. Fifty of these were ordered by Don Yenko at Yenko Chevrolet and were converted into Yenko Deuces. The LT1 uses a new engine block, cylinder head, timing cover, water pump, intake manifold … Introduced by General Motors in 1996, the LT4 was specifically designed as a more powerful variant to the next-generation LT1 engine previously introduced by GM in 1992. Both were available in the 90s Camaro and 90s Corvette. Required fields are marked *. In 1992 General Motors introduced the LT1, 350 cu in (5.7 L) Small Block whose name was a tribute to the original LT-1. It had the same 10.5:1 compression as its Chevy counterpart. Bore 3 = 2.307 in. The all-new engine revives the historic LT1 name and promises at least 450 hp and 450 lb-ft of torque from the same 6.2L (376ci) displacement of the current LS3, only with greater efficiency. There are some significant differences between the new engine and earlier small blocks. Bore 1/5 = 2.346 in. Dry-sump oil capacity in the Camaro application is 10.0 quarts, Fantastic, couldn’t ask for more. It is also worth noting that some Corvette versions of the LT1 came with a dry sump oiling system. We have summarized all the specifications of the engine, as well as compiled a list of automobiles that carried each of the different engine models. This site uses Akismet to reduce spam. View detailed specs, features and options for the 2021 Chevrolet Camaro 2dr Cpe LT1 at U.S. News & World Report. The information listed here is for a stock engine. Chevrolet introduced the 350 cu in (5.7 L) LT-1 in 1970, making it available in both the Corvette and Camaro. The Compression Ratio is 11.5:1, not “11:5”. 4/23 2. Gross horsepower was not given in 1972. Spark Plug Torque 25 lb.-ft. The LT1 has a compression ratio of 10.4 to 1 and a maximum rev-limit of 5,700 rpm. Available with displacements of 383 and 396 cu in, these make up to 550 hp and 500 lb-ft of torque. Your email address will not be published. L86 Engine Specs (VIN "J") The information listed here is for a stock engine. All of these features make this engine very popular with its customers and Corvette enthusiasts. The Hot Cam specs are 218/228 degrees of intake/exhaust duration at 0.050-inch lift, 0.492-inch lift with 1.5:1 rockers, or 0.525-inch lift with 1.6:1 rockers. LT1 engines are all-aluminum and use Active Fuel Management (AFM) and Variable Valve Timing (VVT). The engines also use direct fuel injection technology, which shoots fuel directly into the combustion chamber instead of the intake runner. Domed (with reliefs for the exhaust valve and direct injector), 1970-72 – Gen. L&R Engines of Los Angeles, CA provided us with a standard bore LT1 5.7L block bored and honed .030-inch oversize (4.030”). Another major difference between the LS1 and LT1 engines was the way they were controlled. ... III, IV, & V LS/LT based engines and transmissions. LT1 Performance Specs. These harnesses include the Gen II LT1/LT4, Gen III (24x) LS1/LS6 and Vortec Truck Engines as well as Gen IV (58x) LS2, LS3, LS7, & Vortec and GEN V LT / ECOTEC3 Engines. He has authored numerous technical articles on engine rebuilding for Automotive Rebuilder for more than 12 years. Another small but important touch is the use of a valvespring cup on the LT1 head. The new LT1 is the Gen. 5, 6.2L, small block engine used in Chevrolet performance cars. Although the LT1 isn’t just another Chevy 350, it’s pretty straightforward when you know what to expect. Keep it up. A net horsepower rating of 275 hp (205 kW) was also given. In, Mattar, George. ), Pingback: LT4 6.2L Engine Specs: Performance, Bore & Stroke, Cylinder Heads, Cam Specs & More - OnAllCylinders, Pingback: How to Identify an LT Engine (Gen 5) by VIN - OnAllCylinders, Pingback: L86 6.2L Ecotec3 Engine Specs: Performance, Bore & Stroke, Cylinder Heads, Cam Specs & More - OnAllCylinders. LT1. LT1 Engine Information. It was first seen in the 1992 Chevrolet Corvette. They use similar internals, exhaust manifolds and oil pans. But changing times demand changing designs. When you purchase one of our LT1 High Performance Street Engines you will receive a full spec sheet listing the exact components your engine was built with. Thanks, Your email address will not be published. *** 20 of these were ordered with RPO ZR1. The LT1 engines produced prior to the release of the LS1 engines were rated at 260 hp, while the LS1 engine debuted at 345 hp and gradually increased over the years. The LT-1 had an 11.0:1 compression ratio, Holley 780 cu ft/min (22 m3/min) 4-barrel carburetor, and solid lifters. The engines also use direct fuel injection technology, which shoots fuel directly into the combustion chamber instead of the intake runner. With a maximum top speed of 163 mph (262 km/h), a curb weight of 3223 lbs (1462 kgs), the Corvette C4 LT1 has a naturally-aspirated V 8 cylinder engine, Petrol motor. The GM 6.2L Gen 5 LT1 small-block engine is one of the most technologically advanced engines in the world and completely changes the game. ACR44 (350 Cubic Inch Base, L46 Engines) ACR43 (350 Cubic Inch LT1 Engine) ACR43T (454 Cubic Inch LS5 Engine) Spark Plug Thread 14 mm. For the first year the LT-1 was rated at 370 hp (276 kW) in the Corvette and 360 hp (268 kW) in the Camaro. Doug Anderson is vice president of Grooms Engines, Parts, Machining, Inc., located in Nashville, TN. Spark Plug Torque 25 lb.-ft. It was available exclusively in the (Corvette) and (Camaro) and was produced in relatively low quantities. The LT1 or the LS1?”. With all the improvements described, this 6.162 L, or 376 cubic inch, engine is capable of reaching 460 horsepower at 6000 RPM and 465 lb-ft at 4600 RPM when combined with the performance exhaust option. In 1992 General Motors introduced the LT1, 350 cu in (5.7 L) Small Block whose name was a tribute to the original LT-1. It was introduced in the 2014 C7 Chevy Corvette. Chevrolet Performance is proud to offer the all-new LT1 Wet Sump 6.2L crate engine, the next-generation small block perfect for your project vehicle. The LS1 is word renowned for its power and reliability. Here at Golen Engine we build each LT1 Street engine with the same meticulous process used in our line of racing engines to ensure top quality performance and reliability throughout its lifetime. LT1 6.2L Engine Specs: Performance, Bore & Stroke, Cylinder Heads, Cam Specs & More, LT4 6.2L Engine Specs: Performance, Bore & Stroke, Cylinder Heads, Cam Specs & More - OnAllCylinders, How to Identify an LT Engine (Gen 5) by VIN - OnAllCylinders, L86 6.2L Ecotec3 Engine Specs: Performance, Bore & Stroke, Cylinder Heads, Cam Specs & More - OnAllCylinders. This engine produces a maximum power of 304 PS (300 bhp - 224 kW) at 5000 rpm and a maximum torque of 461.0 Nm (340 lb.ft) at 3600 rpm. Check it out! The 350 Hot Cam kit PN 12480002 is a popular off-road upgrade for LT1 engines. This engine was available through 1997. Engine Block Specifications. ACR43TS (350 Cubic Inch LT1 Engine) ACR43TS (454 Cubic Inch LS5 Engine) ACR44XL (454 Cubic Inch LS6 Engine) Spark Plug Thread 14 mm. This engine produces a maximum power of 304 PS (300 bhp - 224 kW) at 5000 rpm and a maximum torque of … GM changed the design for the Generation II LT1 small block with alu… Spark Plug Gap .033 - .038 inch Firing Order 1-8-4-3-6-5-7-2 Idle Base Engine: 600 RPM (Automatic: 550 RPM) LT1, LS6 Engines: 700 RPM LS5 Engine: 600 RPM The LT4 engine has always been synonymous with high-performance.