1974 Corvette LS4 454: The Last Big-Block Stingray | Full History & Features

The 1974 Chevrolet Corvette LS4 454 represents the end of the big-block era for America’s sports car. As emissions regulations tightened and horsepower ratings dropped, the LS4 454 stood as the final year a Corvette could be ordered with Chevrolet’s legendary 454 cubic-inch big-block V8.

Rated at 270 horsepower (net), the LS4 delivered massive torque, effortless highway power, and the unmistakable sound and feel that defined big-block Corvettes. Combined with the iconic C3 Stingray body, urethane front and rear bumpers, and classic 1970s styling, the 1974 LS4 Corvette has become a highly desirable collector car — marking the end of an unforgettable performance chapter.

In this video, we explore the full history of the 1974 Corvette LS4 454 — why it mattered, how it compared to earlier big-block Corvettes, and why it remains one of the most important Stingrays ever built.

In this video, you’ll learn:

Why 1974 was the final year for the 454 Corvette

Performance details of the LS4 big-block V8

Styling and engineering changes unique to 1974

How the LS4 compared to earlier LS5 and LS6 Corvettes

Why big-block C3 Corvettes are rising in collector value

If you love big-block Chevrolets, classic Corvettes, or the history of American performance, this video is for you. Share your LS4 stories in the comments!