Allow use of a mild street flat tappet camshafts with a MAX valve lift of .500".
This kit contains springs, retainers, and locks for two (2) cylinder heads and will fit most Chevrolet GEN I and II small block V-8 engines without machining (except for the L31 Vortec-series cylinder heads), and a great way to upgrade your worn valve springs and retainers at a great price. Springs are specifically designed for towing/torque and mild street flat tappet camshafts with a MAX valve lift of .550".