SBC Thumpr Series Hyd. Roller Cam 291THR7

The COMP Cams SBC Thumpr Series Hydraulic Roller Cam 291THR7 is designed for small-block Chevrolet engines, offering a performance upgrade that enhances both street and strip applications. This camshaft is engineered to provide an aggressive idle character while maintaining drivability, making it suitable for enthusiasts who want a balance between performance and everyday usability.

Featuring the signature "thumper" lobe profile, this hydraulic roller cam optimizes valve lift and duration for improved mid-range torque and top-end power. The roller design eliminates the need for manual valve lash adjustments, as the roller lifters automatically compensate for thermal expansion, ensuring consistent performance across varying temperatures. Additionally, the cam's lobe geometry reduces valve train stress and minimizes friction losses, translating to enhanced horsepower and a distinctive exhaust note.

Ideal for weekend warriors and restoration builds, the Thumpr series cam is compatible with both factory and aftermarket small-block Chevrolet cylinder heads equipped with hydraulic roller lifter bores. This makes it a versatile choice for builders looking to combine modern reliability with classic performance characteristics.