COMP Cams Hydraulic Roller Lifters Evolution Retro-Fit 390/ 428/ 429/ 460

Originally equipped with a flat tappet cam, FE engines respond well to the increased durability and performance of hydraulic roller lifters. These COMP Cams Retro-Fit Hydraulic Roller Lifters will convert your valvetrain to a modern rollerized design.

Features and Benefits:
- New and Patented Design
- Responsive and Quiet
- Capable of High-RPM Use
- Complete Set

Evolution Hydraulic Roller Lifters with Hydraulic Cartridge Technology are a revolutionary patented tappet. A combination of a self-contained hydraulic cartridge within a thick wall lifter body and accompanying reduced oil volume that is less effected by oil aeration delivers the most consistent bleed rates between each lifter on the market.

This patented HCT tappet is completely new design that was developed specifically by COMP Cams to meet the demanding performance and durability required for modern street and performance street engines. The smaller volume within the hydraulic cartridge creates one of the most responsive and quietest lifters on the market today.

Please Note: For use with early model blocks originally equipped w/ flat tappet cam.

Vehicle Fitment:
1967-1973 Mustang
1964-1976 F100