Stage 3 "Big Stick" Camshaft for Cummins 5.9L/6.7L (1989-2018)

Colt Cams proudly presents its advanced camshaft profiles optimized for the Cummins 5.9L & 6.7L B-series engines. Through extensive research and development, including dyno testing of over 50 combinations of durations, lobe separations, and installation centerlines, we have engineered superior performance grinds tailored for these applications.

Our Stage 3 camshaft, widely known as the "Big Stick," delivers exceptional mid-range torque and horsepower while preserving strong low-end response and excellent drivability. No modifications are required for installation, though we recommend upgraded valve springs for operation above 3,000 RPM.

Quick Facts:

• 181/210 profile
• Drop-In installation on most engines
• Improved fuel efficiency with an average 2–3 MPG gain
• Reduced smoke output by 30–35%
• Approximate 200°F drop in exhaust gas temperatures (EGT)
• Reliable performance up to 4,000 RPM

*Always check valve clearances before installing any camshaft