Colt Cams Stage 3 Camshaft Dodge Ram 4BT Cummins

Upgrade the performance potential of your 4BT Cummins with the Colt Cams Stage 3 Camshaft. Developed through extensive research, development, and dyno testing, this performance camshaft is designed to improve the 4BT's valve timing and airflow while maintaining the practical characteristics that make the 4BT such a versatile diesel engine. The Stage 3 features a 181° intake / 210° exhaust profile with a 106° lobe separation angle. Its drop-in design makes installation straightforward on most applications, although Colt Cams recommends checking valve clearance before installation. Performance-Oriented 4BT Camshaft The factory camshaft is designed around the requirements of a stock 4BT. When you're building a 4BT for improved performance, upgraded airflow, or a more capable fueling and turbo system, the camshaft becomes an important part of the overall combination. Colt Cams developed its performance profiles by testing more than 50 combinations of duration, lobe separation, and installation centerlines. The Stage 3 profile is designed to provide a more performance-oriented valve event strategy while retaining a relatively straightforward installation. Stage 3 Specifications Application: 4BT Cummins Intake Duration: 181° Exhaust Duration: 210° Intake Cam Lift: 0.280" Exhaust Cam Lift: 0.307" Lobe Separation Angle: 106° Installation: Drop-in on most engines Valve Clearance: Always verify before installation Designed for 4BT Builds The Colt Cams Stage 3 is a strong choice for enthusiasts building a 4BT for applications where improved engine performance is a priority. It can complement other engine upgrades as part of a properly matched combination of fueling, airflow, turbocharging, and valvetrain components. Camshaft Break-In Proper break-in is critical when installing a new camshaft. Colt Cams recommends applying cam lube to the cam lobes, lifter faces, distributor gears, and oil pump gears, while oiling the bearing journals and lifter barrels. The engine should be rotated by hand to verify clearances and proper timing before startup, then run at approximately 1,800-2,000 RPM for 18-20 minutes. Colt Cams also recommends using an appropriate zinc additive during flat-tappet camshaft break-in. Important: Always verify valve clearance and proper timing before operating the engine.