Hamilton Cams 178/208 Towing Cam | 07-C-178/208 | 1989-2018 Dodge RAM Cummins 5.9L / 6.7L

The Hamilton Cams 178/208 Towing Camshaft is engineered for 1989-2018 Dodge RAM Cummins 5.9L and 6.7L engines, providing exceptional low-end performance, improved fuel economy, and quicker turbo response. Designed with a short duration and wide lobe separation, this camshaft enhances drivability, making it ideal for towing and daily driving, especially in high-altitude environments.

Features:

• RPM Range: Idle to 3,000 RPM, offering strong low-end torque for towing applications.
• Fuel Efficiency: Improves fuel economy by 2-3 MPG with quicker turbo spool.
• EGT Reduction: Lowers exhaust gas temperatures by 200-300 degrees, helping with engine cooling and durability.
• Compatibility: Works well with larger turbos or heads with larger valves and ports for enhanced response.

This camshaft is a reliable upgrade for drivers seeking better efficiency without sacrificing performance, especially for moderate street trucks and heavy-duty towing. It ensures optimal operation at lower RPMs while maintaining compatibility with common rail engines and larger turbo setups.

Drop-In Cam Fitment Requirements:

• 12v Engines:
  • Piston protrusion: ≤ 0.025″
  • Valve face depth: ≥ 0.055″ with a standard head gasket
  • Intake centerline: 99°
• 98–02 24v Engines:
  • Piston protrusion: ≤ 0.025″
  • Valve face depth: ≥ 0.038″ with a standard gasket
• 03 and Up Engines:
  • Piston protrusion: 0.018″
  • Valve face depth: ≥ 0.038″ with a standard gasket
• Clearance Adjustments:
  • If minimum piston-to-valve clearance is not met, use an oversized head gasket or cut valve reliefs.
  • Check clearances even with drop-in cams (use the clearance calculator for convenience).
• Steel Cam Version:
  • Install at least two bushings in the cam tunnel to prevent steel from wearing into the cast iron block.
• New lifters are always recommended when changing a cam.

Break-In Procedure:

• Preparation:
  • Apply a liberal amount of quality assembly lube to the cam.
  • DO NOT start the engine without oil pressure.
  • For new engines, apply assembly lube to the oil pump and prime the oil filter.
• Oil Change:
  • Change the oil after completing the break-in procedure.
  • Pre-priming the filter and oil system ensures faster oil pressure buildup.
• Priming Procedure:
  • Disconnect the fuel system.
  • Use the starter to spin the engine until oil pressure is visible or oil flows from the rocker arms (limit each attempt to 10 seconds).
• Initial Run:
  • After verifying oil pressure, start the engine and run it at 1200–1500 rpm for five minutes, then shut it down.
  • Adjust the valves after the initial run to ensure proper settings.
• Additional Tips:
  • If re-torquing or “hot-torquing” the head, complete it before adjusting valves since it affects valve lash settings.
  • After break-in, enjoy the improved airflow!