SKU #: CC-C.343.S-4BT MPN #: C.343.S-4BT

Colt Cams Stage 3 Camshaft 4BT Cummins

Name: Colt Cams Stage 3 Camshaft 4BT Cummins
Brand: Colt Cams
Price: 395.25 USD
Availability: InStock

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Description

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.

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.

Vehicle Fitment

Dodge Ram 4BT Cummins

WARNING: Cancer & Reproductive Harm - P65Warnings.ca.gov

About Colt Cams

Colt Cams develops high-performance camshafts and valvetrain components for diesel enthusiasts who demand more from their engines. With a focus on performance-driven camshaft profiles for Cummins and Ford Powerstroke engines, Colt Cams combines extensive research and development with real-world dyno testing to create camshafts designed around the needs of today's diesel performance builds.

Rather than simply modifying existing camshaft profiles, Colt Cams has invested heavily in developing application-specific grinds. Their research has included dyno testing more than 50 combinations of camshaft durations, lobe separations, and installation centerlines to determine profiles that deliver meaningful improvements in airflow, efficiency, drivability, and performance.

Performance Camshafts for Cummins & Powerstroke

Colt Cams offers performance camshafts for some of the most popular diesel platforms, including 5.9L and 6.7L Cummins, 4BT Cummins, 7.3L Powerstroke, and 6.0L/6.4L Powerstroke engines. Whether you're building a daily-driven truck, tow rig, work truck, or dedicated performance engine, Colt Cams offers profiles ranging from mild drop-in upgrades to aggressive competition-oriented camshafts.

Popular Cummins options include the Stage 3 "Big Stick," Stage 4, and Stage 5 camshafts. The Stage 3 "Big Stick" is designed to provide strong mid-range torque and horsepower while maintaining low-end response and drivability, while the more aggressive Stage 4 and Stage 5 profiles are designed for higher-performance applications.

Engineered for Real-World Performance

A camshaft is one of the most important components in determining how an engine breathes and where it makes power. Colt Cams focuses on optimizing valve timing to improve the movement of air and exhaust gases through the engine. Depending on the application and camshaft profile, these improvements can contribute to better turbocharger response, reduced exhaust gas temperatures, improved efficiency, and increased power potential.

Colt Cams also pays close attention to durability. Their performance camshafts are engineered for demanding diesel applications, with profiles developed around the specific characteristics of each engine platform rather than relying on a one-size-fits-all approach.