COMP Cams Evolution HCT (Hydraulic Cartridge Technology) is a new patented tappet. The Evolution HCT tappet provides most consistent performance of any set of lifters in the aftermarket. A combination of self-contained hydraulic cartridge and accompanying reduced oil volume that is less effected by oil aeration delivers the most consistent bleed rates between each lifter. The smaller volume within the hydraulic cartridge creates one of the most responsive and quietest lifters on the market. Startup noise is greatly reduced and a precision controlled bleed down rate ensure excellent performance at high RPM. The patented cartridge design also allows for an incredibly stiff lifter body, greatly reducing body distortion and further ensuring consistent hydraulic performance. This patented HCT tappet is not just a performance Original Equipment replacement. This is an all new bespoke design started from a blank canvas developed to meet the demanding performance and durability our customers desire.Also, as an industry first the hydraulic element of this patented lifter is serviceable, allowing anyone to rebuild their lifters in their own garage.
Evolution HCT Lifters offer quite operation expected from a hydraulic tappet and higher RPM demand by many of today's modern engine builds. Most consistent, highest performing, and quietest hydraulic lifter on the market.
Designed to meet the demanding performance and durability needs of today's high performance engines
Most consistent performing lifters available
Quietest hydraulic lifters on the market
Patented design
The COMP Cams Evolution HCT (Hydraulic Cartridge Technology) lifters are engineered to deliver unmatched consistency and performance for high-performance Chevrolet small block engines ranging from 265 to 400 cubic inches. Featuring a patented hydraulic cartridge design, these lifters provide a significant reduction in oil volume, resulting in faster response times, quieter operation, and reduced noise during startup. The self-contained hydraulic cartridge minimizes oil aeration effects, ensuring a steady bleed rate and optimal hydraulic function across a wide RPM range. This design leads to improved stability and durability under demanding engine conditions, making them an excellent choice for enthusiasts seeking reliable high RPM performance. The smaller hydraulic volume within each lifter enhances responsiveness, while the stiff, robust lifter body minimizes distortion, maintaining precise valve control. Additionally, the innovative cartridge design is serviceable, allowing users to rebuild the hydraulic element easily in their own garage, extending the lifespan of these premium lifters. Built for modern, high-performance engines, the COMP Cams Evolution HCT lifters are among the quietest and most consistent hydraulic lifters available on the market today. Their advanced features make them suitable for street, strip, and racing applications, where dependable performance and longevity are critical. Whether upgrading existing engine components or building a new high-powered setup, these lifters provide a reliable foundation for optimal valve train operation and engine efficiency, backed by the trusted quality of COMP Cams.
Features:
Designed for high-performance Chevrolet small block engines from 265 to 400 cubic inches
