COMP Cams Evolution Retro-Fit Hydraulic Roller Lifters for 396-454 Chevrolet Big Block - Pair

If you're rebuilding the valvetrain on your 396-454 Chevrolet Big Block, these COMP Cams Evolution Retro-Fit Hydraulic Roller Lifters are a solid choice. They're designed to handle the demands of high-performance engines, offering a notable improvement in consistency and quiet operation compared to stock.

What sets these lifters apart is their patented Hydraulic Cartridge Technology (HCT). This design uses a self-contained hydraulic cartridge with reduced oil volume, which makes it less sensitive to oil aeration. This results in very consistent bleed rates between each lifter, leading to smoother operation and reduced startup noise. The smaller volume inside the cartridge also contributes to a responsive feel and a quieter overall valvetrain, even at higher RPMs. The lifter body itself is also made very stiff to minimize distortion, further ensuring reliable hydraulic performance.

Beyond just performance, these lifters are also designed for durability. They're not just a simple replacement for your original equipment; they're a bespoke design built from the ground up for demanding applications. A unique feature is that the hydraulic element is serviceable, meaning you can rebuild them yourself if needed.