COMP Cams Chevrolet Small Block 265-400 Evolution Retro-Fit Hydraulic Roller Lifters - Set of 12

If you're rebuilding the top end of your Chevrolet Small Block engine, especially those from 265 to 400 cubic inches, getting the valvetrain right is crucial for performance and longevity. These COMP Cams Evolution Retro-Fit Hydraulic Roller Lifters are designed to provide a significant upgrade over stock, offering a blend of quiet operation and consistent performance that's hard to beat.

What sets these lifters apart is their patented Hydraulic Cartridge Technology (HCT). This design uses a self-contained cartridge with a reduced oil volume, which makes it less susceptible to oil aeration. This means you get more consistent bleed rates between each lifter, leading to smoother operation and better performance, particularly at higher RPMs. The smaller internal volume also contributes to a more responsive and quieter lifter, reducing that common startup noise and ensuring your engine runs smoothly. The lifter body itself is also incredibly stiff, which further minimizes distortion and maintains that consistent hydraulic performance you're looking for in a high-performance build.

These aren't just a simple replacement for your old lifters; they're a completely new design built from the ground up to meet the demanding performance and durability needs of modern engine builds. A notable feature is that the hydraulic element is serviceable, meaning you can rebuild them yourself if needed. This set includes 12 lifters, enough for a standard V8 small block Chevy.