Product Description
The Hamilton Cams 07-C-178/208 Cast Camshaft is one of the most popular upgrades available for Cummins owners looking to improve towing performance, fuel economy, turbo response, and overall drivability. Designed specifically for 1989–2018 5.9L and 6.7L Cummins engines, this proven street and towing camshaft delivers exceptional low-RPM airflow while maintaining excellent street manners.
Featuring a 178° intake duration and 208° exhaust duration at .050", the 07-C-178/208 was developed to maximize efficiency and low-end torque. The wide lobe separation angle reduces valve overlap, helping lower exhaust gas temperatures, improve combustion efficiency, and increase turbocharger response. It is an excellent choice for daily-driven trucks, tow rigs, RV haulers, work trucks, and street-driven performance applications.
The 178/208 grind has consistently proven to lower EGTs, improve fuel mileage, and produce stronger power under load. It is especially beneficial on trucks operating at higher elevations, towing heavy trailers, or running larger single turbochargers that need improved spool-up characteristics. Hamilton considers this one of their most efficient Cummins camshaft profiles ever tested.
FEATURES
- Cast performance camshaft for 1989–2018 Cummins engines
- 178° intake duration / 208° exhaust duration @ .050"
- Improves low-RPM torque and towing performance
- Quicker turbo spool-up and improved throttle response
- Helps reduce EGTs under load
- Designed to improve overall fuel economy
- Excellent choice for daily drivers and tow rigs
- Works with stock or upgraded turbochargers
- Compatible with both 12-valve and 24-valve Cummins engines
- Made in the USA
FITMENT
- 1989–1993 Dodge Ram 2500/3500 5.9L Cummins (12V)
- 1994–1998 Dodge Ram 2500/3500 5.9L Cummins (12V)
- 1998.5–2002 Dodge Ram 2500/3500 5.9L Cummins (24V VP44)
- 2003–2007 Dodge Ram 2500/3500 5.9L Cummins Common Rail
- 2007.5–2018 Ram 2500/3500 6.7L Cummins
- 2008–2018 Ram 4500/5500 6.7L Cummins
WHAT'S INCLUDED
- Hamilton Cams 07-C-178/208 Cast Camshaft
CROSS-REFERENCE AND RELATED PRODUCTS
- Hamilton 07-T-001 1.45" Tappets
- Hamilton 07-T-002 DLC Billet Tappets
- Hamilton 07-S-003 103# Valve Springs
- Hamilton 07-C-001 Zinc Break-In Additive
- Hamilton 07-C-Retainer Bronze Cam Retainer
- Hamilton 07-C-188/220 Cast Camshaft
- Hamilton 07-C-188/220S Steel Camshaft
- Hamilton 07-C-220/240 Steel Camshaft
SPECIFICATIONS
- Manufacturer: Hamilton Cams
- Part Number: 07-C-178/208
- UPC: 857340008087
- Camshaft Material: Cast Iron
- Duration @ .050": 178° Intake / 208° Exhaust
- Lift: .290" Intake / .310" Exhaust
- RPM Operating Range: Idle–4,000 RPM
- Engine Compatibility: Cummins 5.9L & 6.7L
- Engine Type: 12-Valve and 24-Valve
- Application: Towing, Efficiency, Daily Driving, Street Performance
- Country of Origin: USA
FAQ
What is the primary purpose of the Hamilton 178/208 camshaft?
The 178/208 grind is designed to maximize low-end torque, towing capability, fuel economy, and turbo response while maintaining excellent street drivability.
Will this camshaft lower EGTs?
Yes. Many users report EGT reductions of approximately 200–300°F under load due to improved airflow and combustion efficiency.
Does this camshaft improve fuel mileage?
Yes. The 178/208 is widely regarded as Hamilton's most efficient towing and economy camshaft profile and is designed to improve overall fuel economy.
Can I run this camshaft with a larger turbo?
Absolutely. This camshaft is especially effective with larger single turbochargers because it improves low-RPM airflow and spool-up characteristics.
Should I install new tappets and valve springs?
Yes. Hamilton strongly recommends using their tappets and appropriate valve springs to maximize durability and performance.
Is this camshaft suitable for daily-driven trucks?
Yes. The 07-C-178/208 is considered one of the best street and towing camshafts available for Cummins-powered trucks because it provides improved drivability without sacrificing reliability.
