PAC Racing Springs

PAC Racing Springs was not the manufacturer of the factory springs used in the GM 604 crate engine, something many racers recognize from performance differences compared to PAC’s standards.
However, PAC was the OE supplier of locks, seats, and retainers used in these engines. With GM hardware becoming increasingly difficult to source, PAC offers a reliable solution.
The PAC-R395-16, PAC-L8157-16, and PAC-S142-16 are the same high-quality components originally used in these engines. Eliminate the hassle of searching for parts, PAC has both the hardware and PAC-1280X-16 OE-spec springs in stock, built for durability and consistent performance.
Contact PAC Racing Springs today for trusted components, ready when you need them.