SBC Thumpr Hyd. Roller Cam 299THR7

The SBC Thumpr Hyd. Roller Cam 299THR7 from COMP CAMS is a hydraulic roller camshaft engineered specifically for small-block Chevrolet engines seeking aggressive street and strip performance. This cam is designed for builders who demand high-lift, high-duration profiles without sacrificing reliability or requiring solid lifter conversions.

The hydraulic roller design eliminates the need for expensive solid lifter packages while delivering the wild, distinctive exhaust note that makes the "Thumpr" series iconic among performance enthusiasts. Built with COMP CAMS' advanced lobe technology, the 299THR7 combines high-lift and extended duration specs that generate substantial cylinder filling and aggressive valve overlap for maximum power delivery across the RPM band.

This camshaft suits builders upgrading carbureted or fuel-injected SBC platforms ranging from 350 to 406 cubic inches, particularly those targeting 5,500–6,500 rpm peak power zones. The roller design reduces friction and wear compared to flat-tappet alternatives, ensuring consistent valve timing and extended component life under high-rpm operation.