C5 Corvette engine

Specifications

The C5 Corvette engine from Chevrolet represents a major evolution in American performance engineering, built around the legendary 5.7L LS1 V8 engine. Producing 345 horsepower from 1997–2000 and 350 horsepower from 2001–2004, along with 350–365 lb-ft of torque, the LS1 delivers strong, linear acceleration and exceptional throttle response. Its 10.1:1 compression ratio, 3.90-inch bore, and 3.62-inch stroke combine to create a balanced 346 cubic-inch (5.7L) platform known for durability, efficiency, and impressive power potential. The lightweight aluminum block construction enhances weight distribution and handling, contributing to the C5’s near 50/50 balance and refined chassis dynamics.

For enthusiasts seeking even greater performance, the 2001–2004 Z06 model features the high-output LS6 V8, delivering 385 horsepower initially and up to 405 horsepower in later years, with torque ranging from 385-400 lb-ft. Designed with improved airflow, higher-lift camshaft specifications, and strengthened internals, the LS6 elevates the C5 platform to track-ready capability while maintaining street reliability. Whether in standard form or Z06 specification, the C5 Corvette offers a compelling blend of raw V8 power, advanced engineering, and iconic American sports car heritage.

Engine Variants

LS1

This is a 5.7L (346 cubic-inch) Gen III small-block V8 that powered the standard C5 Corvette engine lineup. Featuring an aluminum block and heads, a 10.1:1 compression ratio, and sequential fuel injection, it produced 345 horsepower from 1997–2000 and 350 horsepower from 2001–2004, along with 350–365 lb-ft of torque. The LS1 is known for its lightweight construction, smooth power delivery, and strong mid-range torque, contributing to the C5’s balanced handling and near 50/50 weight distribution. Its durability and vast aftermarket support have made it one of the most popular and tunable modern small-block V8 engines.

LS6

This is a higher-performance evolution of the LS1, developed specifically for the C5 Z06. Retaining the 5.7L displacement, it featured improved cylinder head airflow, a higher-lift camshaft, revised intake manifold, and strengthened internal components. Output was rated at 385 horsepower in 2001 and increased to 405 horsepower from 2002–2004, with torque ranging from 385–400 lb-ft. Designed for track-focused performance while maintaining street reliability, the LS6 elevated the C5 Corvette’s capabilities with sharper throttle response, higher RPM potential, and enhanced overall performance.

Frequently asked question