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Thumbnail Filmstrip of Flat Tappet Conversion Kit With 178/208 Camshaft Hamilton Cams 07-CC-24V19 Images
Hamilton Cams Flat Tappet Conversion Kit with 178/208 Camshaft Part #: 07-CC-24V19+
Restore the legendary reliability of the pre-2019 Cummins valvetrain in your 2019–2024 Ram 6.7L with the Hamilton Cams Flat Tappet Conversion Kit.
In 2019, Ram switched the 6.7L Cummins to a hydraulic roller valvetrain. While common in gasoline engines, these roller lifters have proven far less durable in hard-working diesel trucks. Common failure modes include collapsed lifters, spinning lifters, and roller-bearing seizure that quickly destroys the camshaft and can lead to catastrophic engine damage.
Hamilton Cams solved the problem with a complete flat-tappet conversion kit that returns the engine to the proven mechanical design used successfully for decades on earlier Cummins engines.
Kit Includes
- 178/208 Forged Efficiency Camshaft — Forged (not billet) for denser, more uniform grain structure and superior strength
- DLC-Coated Steel Flat Tappets — Diamond-Like Carbon coating for extremely low friction, high hardness, and excellent wear/corrosion resistance
- Heavy-Duty Upgraded Pushrods — Significantly higher buckling strength than OEM (approx. 3,500+ lbs vs. ~1,800 lbs) to minimize deflection under load
- Adjustable Rocker Arms with DLC-Coated Trunnions — Improved oiling and reduced galling for long-term durability
Key Benefits
- Eliminates the failure-prone roller-bearing design at the source
- Runs on factory calibration — no tune required
- Keeps all emissions equipment intact
- SEMA-certified for 49-state emissions compliance (not legal for sale or use in California)
- Noticeable improvements reported by owners on stock trucks: quicker turbo spool, sharper throttle response, lower EGTs, and modest fuel economy gains
- Works on completely stock trucks — no other modifications needed
Fitment
- 2019–2024 Ram 2500, 3500, 4500, and 5500 with 6.7L Cummins (hydraulic roller valvetrain)
Important Notes
- Intake valve lash: 0.010″
- Exhaust valve lash: 0.020″
- If the engine block or cylinder head has been surfaced, contact Hamilton Cams to verify fitment before ordering.
- Rare casting variations in some blocks may require minor machining for tappet clearance.
Oil Recommendation Use a quality 15W-40 (or 5W-40 in extreme cold) with adequate zinc, phosphorus, and molybdenum. Preferred options include Schaeffer 700 Series 15W-40 or Valvoline Premium Blue 15W-40. Fleetguard Stratapore LF16035 is the recommended oil filter.
This is the permanent reliability upgrade for 2019+ 6.7L Cummins owners who want the proven longevity of the older flat-tappet design without sacrificing drivability or emissions compliance outside California.
Hamilton Cams Flat Tappet Conversion Kit with 178/208 Camshaft Part #: 07-CC-24V19+
Restore the legendary reliability of the pre-2019 Cummins valvetrain in your 2019–2024 Ram 6.7L with the Hamilton Cams Flat Tappet Conversion Kit.
In 2019, Ram switched the 6.7L Cummins to a hydraulic roller valvetrain. While common in gasoline engines, these roller lifters have proven far less durable in hard-working diesel trucks. Common failure modes include collapsed lifters, spinning lifters, and roller-bearing seizure that quickly destroys the camshaft and can lead to catastrophic engine damage.
Hamilton Cams solved the problem with a complete flat-tappet conversion kit that returns the engine to the proven mechanical design used successfully for decades on earlier Cummins engines.
Kit Includes
178/208 Forged Efficiency Camshaft — Forged (not billet) for denser, more uniform grain structure and superior strength
DLC-Coated Steel Flat Tappets — Diamond-Like Carbon coating for extremely low friction, high hardness, and excellent wear/corrosion resistance
Heavy-Duty Upgraded Pushrods — Significantly higher buckling strength than OEM (approx. 3,500+ lbs [...]
Hamilton Cams Flat Tappet Conversion Kit with 178/208 Camshaft Part #: 07-CC-24V19+
Restore the legendary reliability of the pre-2019 Cummins valvetrain in your 2019–2024 Ram 6.7L with the Hamilton Cams Flat Tappet Conversion Kit.
In 2019, Ram switched the 6.7L Cummins to a hydraulic roller valvetrain. While common in gasoline engines, these roller lifters have proven far less durable in hard-working diesel trucks. Common failure modes include collapsed lifters, spinning lifters, and roller-bearing seizure that quickly destroys the camshaft and can lead to catastrophic engine damage.
Hamilton Cams solved the problem with a complete flat-tappet conversion kit that returns the engine to the proven mechanical design used successfully for decades on earlier Cummins engines.
Kit Includes
- 178/208 Forged Efficiency Camshaft — Forged (not billet) for denser, more uniform grain structure and superior strength
- DLC-Coated Steel Flat Tappets — Diamond-Like Carbon coating for extremely low friction, high hardness, and excellent wear/corrosion resistance
- Heavy-Duty Upgraded Pushrods — Significantly higher buckling strength than OEM (approx. 3,500+ lbs vs. ~1,800 lbs) to minimize deflection under load
- Adjustable Rocker Arms with DLC-Coated Trunnions — Improved oiling and reduced galling for long-term durability
Key Benefits
- Eliminates the failure-prone roller-bearing design at the source
- Runs on factory calibration — no tune required
- Keeps all emissions equipment intact
- SEMA-certified for 49-state emissions compliance (not legal for sale or use in California)
- Noticeable improvements reported by owners on stock trucks: quicker turbo spool, sharper throttle response, lower EGTs, and modest fuel economy gains
- Works on completely stock trucks — no other modifications needed
Fitment
- 2019–2024 Ram 2500, 3500, 4500, and 5500 with 6.7L Cummins (hydraulic roller valvetrain)
Important Notes
- Intake valve lash: 0.010″
- Exhaust valve lash: 0.020″
- If the engine block or cylinder head has been surfaced, contact Hamilton Cams to verify fitment before ordering.
- Rare casting variations in some blocks may require minor machining for tappet clearance.
Oil Recommendation Use a quality 15W-40 (or 5W-40 in extreme cold) with adequate zinc, phosphorus, and molybdenum. Preferred options include Schaeffer 700 Series 15W-40 or Valvoline Premium Blue 15W-40. Fleetguard Stratapore LF16035 is the recommended oil filter.
This is the permanent reliability upgrade for 2019+ 6.7L Cummins owners who want the proven longevity of the older flat-tappet design without sacrificing drivability or emissions compliance outside California.