Product Description
Street/tow favorite for quick spool, lower EGT, and broad torque. The HAMILTON CAMS 07-C-188/220 cast camshaft is a proven upgrade for 1989–2018 Cummins 5.9L/6.7L engines (12V & 24V) that want strong off-idle response and mid-range without sacrificing daily drivability.
Fitment
- 1989–1998 5.9L Cummins 12-valve (VE, P-pump)
- 1998.5–2018 5.9L/6.7L Cummins 24-valve (VP44 & Common Rail)
- Works with factory or aftermarket valve train when properly matched (springs/tappets as required).
Notes: Always verify piston-to-valve and retime with a quality cam gear. Break in with proper lube and procedure.
What’s Included
- Hamilton Cams 188/220 cast camshaft
- Installation instructions (timing/torque guidance)
Recommended Supporting Parts
- Hamilton 1.45" Tappets (required for warranty on many setups): 07-T-001 or DLC 07-T-002
- Hamilton 24V Valve Springs: 07-S-003 (103#) or 07-S-110 (110#)
- Hamilton 24V Pushrods: 07-P-004 Extreme Duty
Cross-Reference / Alternatives
- Same grind, steel core: 07-C-188/220S
- Same grind with 109 LSA: 07-C-188/220 (109 LSA)
- 24V Combo (cam + gear + bearings): 07-CC-24V188
- 12V Combo (cam + gear + bearings): 07-CC-12V188
- Alternative street grind: 178/208 Combo (24V)
- CPP 188/220 Cam (house option): CPP 07-C-188-220
FAQ
What kind of gains should I expect?Quicker turbo spool, lower EGT, and a stronger mid-range. Many trucks feel more responsive under 2,000 rpm while still pulling cleanly to higher rpm when paired with proper springs and tuning.
Do I need to upgrade tappets and springs?Hamilton tappets are strongly recommended with any new cam, and higher-rate valve springs are advised for elevated rpm/boost. See the Recommended Supporting Parts above.
Will this work on both 12V and 24V?Yes—this 188/220 grind fits 1989–1998 12V and 1998.5–2018 24V engines. Choose the correct complementary parts (tappets/springs) for your valvetrain.
Should I choose the 109 LSA version or the steel core?The 109 LSA variant shifts the curve slightly; the steel core adds durability for aggressive spring pressure and high rpm. See the Cross-Reference links to compare.
Any install tips?Degree the cam, verify piston-to-valve clearance, use proper break-in oil, and re-set lash after heat-cycle. Replace the cam gear/bearings if worn or when doing a full refresh.
