This block casting was used from 1992-97. GM did away with the belt-driven water pump and rear HEI distributor—replaced with a camshaft-driven, reverse-flow water pump, and OptiSpark ignition. 1970-72: The first LT1 performance engine. The OEM J1349 rating was 460 hp. Chevrolet V-8 small-block, which was a cut above the Tuned Port Injection small-block first introduced in 1984. But the potential for power is there without ever cracking the valve covers. The objective was reduced emissions and greater amounts of power. The information listed here is for a stock engine. Engine Power Increased . What are the LT1 basic specs? What makes the 1992-97 LT1 block different from the traditional Chevy small-block is what it has—and what it doesn’t have. Mark Jeffrey of Trans Am Racing in Gardena, CA volunteered to build our LT1 turned LT4, with the objective being 450 hp, with a broad, stump-pulling torque curve. Complete information about the GM 6.2L LT1 V-8 engine, including detailed specifications, vehicle applications, horsepower, torque and much more. GM produced a number of LT1 cylinder heads during the 1990s. General Motors created this small block engine in the 1990s; the LT1 is still in service to this day. GM changed the design for the Generation II LT1 small block with alu… The list below will outline many basic modifications to increase the performance potential of the LT1. If you modify your setup, with aftermarket heads, cam, etc., you will want to determine where the new torque peak is reached, and tune accordingly. Mark had Air Flow Research cylinder heads in mind for our LT1 build along with an aggressive street cam package that would be good for both the commute and racetrack. Thanks to a 383 c.i.d. OptiSpark was a pancake-style, light-triggered electronic distributor located beneath the cam-driven water pump. This reduced weight significantly whilst increasing heat dissipation. In the LT1, coolant took the opposite path, starting in the cylinder heads and then cooling the engine block. Overview. of torque. Most engines route the coolant from the water pump to the block and through the head(s). Camaros and Firebirds with the LT1 engine generate 275 horsepower and 325 ft.-lb. A few thousand in LS1 mods will bring it up to 440+ rwhp. The original small-block Chevy (SBC) V8 was built for decades, spanning from the mid-1950s through the 1990s. No one did it better than Chevrolet. You will want the vented OptiSpark. When we decided to build a Gen. II LT1 383 stroker, we understood it was a significant turning point in the small-block Chevy’s 37-year history. 1997- Final Year Of The LT1 V8 Engine. LT1/LT4 heads employ rail-style self-aligning rocker arms similar to the LS. and intercooled engine with 620 hp and 600 ft lbs of torque. Comments That customer wanted to continue adding horsepower and take the engine into the next phase. But changing times demand changing designs. Here’s how they stack up. However—expect to see the 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. This was well written and informative. Instead, it has an oil pump drive stuffed in the block in back secured by a single bolt. The LT1 engine is a small-block eight-cylinder engine that is produced by Chevrolet. The new LT1 is more efficient, more powerful, and offers more response than a smaller V8. Despite the LT1’s engineering shortcomings up front, it was a terrific factory small block sporting a nodular iron crank, powdered metal “cracked” connecting rods, and hypereutectic pistons. 1970 engine is used as the baseline. A-Team Performance Complete OptiSpark Spline Drive Distributor with Wiring Harness Compatible With Chevy GMC Chevrolet 1992-1994 LT1 V8 5.7L 350, 265, Black Cap 4.0 out of 5 stars 7 $69.99 $ 69 . Pounds / Horsepower: 14.23 Close Ratio Four Speed Manual Transmission 270 Horsepower LS5 Engine: 3,827 lb. We’re working with a 1996 vintage LT1 block, identifiable by its “327” visible in the block and a casting number of #10125327 for the 5.7L V8 with a 4.000-inch bore. It was the last really hot Chevy small-block ever done, with the exception being the high-revving Trans Am-inspired 302 c.i.d. Chevrolet’s selling point in technology would also be the Gen. II’s undoing. His writing in business and efforts as a publicist have been recognized in outlets such as Mashable, ReadWriteWeb, "WIRED" and "BusinessWeek," among other publications. 2016+ Camaro SS 6.2L LT1 V8 Performance Parts The 6th Generation Camaro SS LT1 V8 Direct-Injection Engine with available aftermarket Exhaust Systems, Cold Air Intakes, Intake Manifold, Superchargers, Engine & Transmission Tuning & Power Programmers, Engine Upgrades, and more. It would also be the small-block Chevrolet’s curtain call—the end of a very successful design run that would end on a mass scale at the 42-year mark. The engines also use direct fuel injection technology, which shoots fuel directly into the combustion chamber instead of the intake runner. ), which was available in the Caprice as the base V8. However, the LT1 is not Flex Fuel capable (E85). It was the last really hot Chevy small-block ever done, with the exception being the high-revving Trans Am-inspired 302 c.i.d. There was the unvented (1992-’94) and vented (1995-’97). Copyright 2021 Leaf Group Ltd. / Leaf Group Media. The LT1 engine (the "LT1" designation was first used by GM in 1970 and then later in 1992.) The original LT4 engine was introduced as a higher-performance engine option in the 1996 Corvette. Although the LT1 was only around for five years, there were two-bolt and four-bolt blocks, aluminum and cast iron heads, regular and H.O. Take the time and guesswork out of designing a winning combination and save some hard-earned cash. 35. I keep hearing that the 4blt main block may be prone to cracks along the main web area. Here's a build from Keith Dorton of Automotive Specialists that's a naturally aspirated small block Chevy making an easy 557 horsepower. Fuel is delivered to the engine by way of an electronic fuel injection that sequentially serves fuel to each of the eight cylinders. Z28 in 1969. 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