What Are Some Specifications of LT1 Engines?


Quick Answer

The LT1 is a high-performance small-block engine by Chevrolet. The company sells both cars that run on the LT1 engine and the engine itself. As of December 2015, the company suggests $11,000 for individual LT1 engines.

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Full Answer

At 4.065 inches in bore and 3.622 inches in stroke, the LT1 displaces up to 376 cubic inches of air at a compression ratio of 11.5 to one. The engine can produce up to 460 horsepower at 6,000 rpm or 465 pounds-feet of torque at 4,600 rpm. The Direct Injection eight-cylinder engine features a cast aluminum block with six-bolt nodular iron main bearing caps, a forged steel crankshaft and forged powdered metal connecting rods.

Chevrolet introduced the engine in the seventh-generation Corvette Stingray. Although similar to the LS engines in architecture, the LT1 has a few differences, some of which are the block casting, cylinder head design and oiling system. It has investment-cast roller trunnion rocker arms at a ratio of 1.81 to one.

Chevrolet suggests using premium fuel with the engine and warns against exceeding 6,600 rpm. The company also notes that the engine is not suitable for marine use and that the assembly kit does not include electronics. Chevrolet offers a 24-month or 50,000-mile warranty with the engine.

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