COMP CAMS 31-601-9 COMP Cams 31-601-9 Mutha Thumpr Hydraulic Roller Camshaft for Small Block Ford

Upgrade the character and performance of your Small Block Ford with the COMP Cams 31-601-9 Mutha Thumpr hydraulic roller camshaft. Designed for enthusiasts seeking an aggressive exhaust note and strong street performance, this camshaft combines modern hydraulic roller technology with the distinctive Mutha Thumpr profile. It is engineered for compatible Small Block Ford applications and is supplied as an individual camshaft.
The COMP Cams 31-601-9 features 0.541 inches of lift on the intake and 0.526 inches on the exhaust, with advertised duration ratings of 291 degrees intake and 311 degrees exhaust. Its 107-degree lobe separation angle supports the pronounced idle and responsive powerband associated with the Mutha Thumpr series. The recommended operating range is approximately 2,200 to 5,900 RPM, making it suitable for performance-oriented street builds and applications that prioritize mid-range and upper-RPM power.
As a hydraulic roller camshaft, this COMP Cams design provides the benefits of roller valve-train operation while eliminating the need for routine lash adjustments associated with mechanical lifter systems. Proper compatibility with cylinder heads, lifters, valve springs, rocker components, pistons, compression ratio, and the intended engine combination should be confirmed before installation. Professional installation and careful checking of valve-to-piston clearance, spring requirements, and overall valve-train geometry are recommended to help ensure reliable performance. Choose the COMP Cams Mutha Thumpr 31-601-9 when you want a bold performance profile and a camshaft matched to a Small Block Ford build.

Features:

• Hydraulic roller camshaft designed for compatible Small Block Ford applications

• Mutha Thumpr profile delivers an aggressive performance character and pronounced idle

• Intake lift: 0.541 inches

• Exhaust lift: 0.526 inches

• Advertised intake duration: 291 degrees

• Advertised exhaust duration: 311 degrees

• 107-degree lobe separation angle

• Recommended operating range: approximately 2,200 to 5,900 RPM

• Sold individually