1978 was the first year a V8 was not the standard engine for the Grand Prix as the car lost 600 lbs. in an effort to improve fuel efficiency. However, its G-Body platform is a solid base to build upon with numerous parts and compatibility with several different GM engines.

Hays bulletproof billet flywheels are developed specifically for the high-RPM punishment of competition use. Steel and aluminum flywheel applications available for many transmission and engine combinations.