2019+ Cummins 6.7 Flat tappet conversion kit

Important Fitment Notice

If you’ve had your engine block or cylinder head surfaced, please call us for verification to ensure proper kit fitment.

Intake Valve Lash: 0.010″

Exhaust Valve Lash: 0.020″

Oil Recommendations

For warm weather: Use Valvoline Premium Blue 15W-40

For cold climates: Use Valvoline 5W-40

Alternatively, Schaeffer 700 Series is also an excellent choice.

The Hamilton Cams Difference

“Innovation slightly faster than imitation.”

We’ve earned this reputation by investing in the research, engineering, and quality manufacturing that others attempt to copy.

Forged Steel Camshafts

Tighter Grain Structure: Our 178-208 steel cams are forged, not cut from bar stock—resulting in a denser, more uniform grain structure.

Enhanced Longevity: A natural “halo” forms on the exterior of the cam during forging, adding a layer of strength for extended service life.

DLC-Coated Tappets

Gas Carburized & Polished: Each tappet undergoes a meticulous hardening process, then is polished for a smoother contact surface.

Diamond-Like Carbon (DLC) Coating: This ultra-hard surface finish dramatically reduces friction and wear—if a tappet isn’t DLC-coated, you’re missing out on the best protection available.

Heavy-Duty Pushrods

3500+ lbs Buckling Force: Compared to around 1800 lbs for OEM pushrods, ours drastically reduce deflection at high cylinder pressures.

Consistent Valve Timing: With less flex, your valvetrain stays precisely in sync—even under extreme conditions.

Upgraded Rocker Arms

High-Quality Casting: Built to handle intense stress and heat cycles.

Gas Carburized Ball & Foot: Reduces friction and wear for longer service intervals.

DLC-Coated Trunnion: Minimizes galling—an all-too-common issue with OEM trunnions—and lowers overall friction in the valvetrain.

Proven Performance & Reliability

Decades of Experience: Our cams have powered countless diesel engines for millions of road miles and thousands of dyno runs.

SEMA-Certified (49-State Compliance): This kit is tested and certified for street use in 49 states, giving you peace of mind.

When you choose Hamilton Cams, you’re investing in proven innovation and superior craftsmanship. Experience the confidence that comes from a kit designed to hold up under extreme conditions, and help your Cummins engine deliver reliable power for the long haul.

’19+ flat tappet conversion

$3,399.00

This kit replaces the problematic factory hydraulic roller lifters and camshaft to a reliable flat tappet. It is 49 state certified. We are confident it would pass CARB testing, but we don’t do business in California. This kit will fit and is emission certified for all Ram 2019-2024 2500 and 3500 diesels not in California.

It comes with

– 178/208 Forged camshaft

– DLC coated steel tappets

– upgraded pushrods

– Adjustable rocker arms with DLC coated trunnions

 DNR Cam Removal Tray With Complete Removal/Install Kit for 19+ Cummins – DNRcustoms.com

People have noticed an increase in spool up and throttle response, fuel economy gains and EGT reductions, all on stock vehicles with OEM tuning and all emission equipment present. Click on the description tab below for more information.