Specifications of an LT1 Engine

by Chester Rockwell
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The LT1 engine is a small-block eight-cylinder engine that is produced by Chevrolet. It is known for its high-performance and use in Chevy's line of Corvette, Camaro and Caprice cars. All LT1 engines are built from a cast-iron block. The LT1 is a modern version of Chevy's LT-1 engine, which it used in its first line of Corvettes sold in the 1970s.

Engine Block Specifications

The LT1's iron engine block is sized at 350 cubic inches and has an overall displacement of 5.7 liters. It has a cylinder bore and stroke of 4 and 3.48 inches, respectively. The LT1 has a compression ratio of 10.4 to 1 and a maximum rev-limit of 5,700 rpm.

Power Specifications

Power output of the LT1 varies slightly depending on the vehicle it is placed in. The LT1-equipped Corvette features 300 horsepower and 330 ft.-lb. of torque. Camaros and Firebirds with the LT1 engine generate 275 horsepower and 325 ft.-lb. of torque for the 1993 to 1995 model years, and 285 horsepower and 325 ft.-lb. of torque for the 1996 and 1997 model years.

Valvetrain and Intake Specifications

Featuring a total of 16 valves, the LT1 has two valves per cylinder, each of which is made of cast aluminum. Fuel is delivered to the engine by way of an electronic fuel injection that sequentially serves fuel to each of the eight cylinders. The LT1 has an aluminum intake manifold and a 48-mm throttle body.

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