Small Block 265-400, Retro-Fit Roller Lifter for Early Model Blocks Originally Equipped with Flat Tappet Cam, Tall Body Fits Both Standard Blocks and Tall Lifter Bore Aftermarket Blocks, Short Travel, Race Typee
- Designed to perform at higher engine speeds
- When equipped with hydraulic lifters, high RPM is limited by improper position of lifter's internal piston as lifter "pumps up"
- Improper location results in open valves that lead to lost power and possibly engine failure
- Minimize internal piston movement to allow higher engine RPM
