Chevrolet C3 Corvette 5.7L V8 L81 Petrol engine for sale.

1981 Chevrolet C3 Corvette 350 cubic inch 5.7L V8 L81 engine.

Classic small-block legendary high-performance  Power plant, Used engine For Sale.

This Chevrolet C3 Corvette 5.7L V8 L81 Petrol engine for sale is a classic small-block Chevrolet powerplant that represents the refined era of late-1970s Corvette performance. 

Designed to balance smooth drivability, reliability, and compliance with tightening emissions regulations, the L81 engine remains a popular choice for period-correct restorations and authentic replacement builds. Its proven small-block architecture, wide parts availability, and unmistakable V8 character make it ideal for enthusiasts seeking originality and dependable cruising performance in a classic Corvette platform.

The L81 5.7L V8 was factory-installed in Chevrolet Corvette C3 models from approximately 1980 to 1981, marking the final years of the third-generation Corvette. It was paired exclusively with an automatic transmission and represented Chevrolet’s most refined 350 V8 of that era. 

Variants of the 350 small-block were also widely used across other GM vehicles, including Chevrolet Camaro, Chevrolet Caprice, and Chevrolet Malibu models of the late 1970s and early 1980s, making the L81 compatible with many classic GM rear-wheel-drive platforms when equipped with appropriate accessories and mounts.

Specifications, Common weaknesses and Maintenance.

In terms of specifications, the Chevrolet L81 is a 350 cubic inch (5.7-liter) naturally aspirated V8 featuring a cast-iron block and heads, overhead-valve pushrod design, and a Rochester Quadrajet four-barrel carburetor. 

Factory output was rated at approximately 190 horsepower and 280 lb-ft of torque, tuned for smooth power delivery and highway comfort rather than high-RPM performance. The engine features hydraulic lifters, a relatively low compression ratio for emissions compliance, and durable internals that contribute to its long service life and ease of maintenance.

Common weaknesses and maintenance notes for the L81 engine are typical of late-1970s small-block designs. Emissions-related components such as vacuum lines, EGR valves, and carburetor tuning can require attention over time. 

Cooling system upkeep is essential, as aging radiators and hoses may lead to overheating if neglected. Regular oil changes, proper ignition timing, and carburetor maintenance are key to reliable operation. With consistent care, the Chevrolet C3 Corvette 5.7L V8 L81 Petrol engine delivers dependable classic V8 performance and enduring collectible value.