Product Description
The Hamilton Cams 07-C-188-220 is a proven 188/220 cam on a 109 LSA for 1989–2018 5.9L & 6.7L Cummins builds. It’s a popular street/tow profile that broadens mid-range power while maintaining drivability when paired with the correct lifters, springs and pushrods.
Fitment
- 1989–1998 5.9L Cummins 12-valve (VE/P-pump)
- 1998.5–2002 5.9L Cummins 24-valve (ISB)
- 2003–2007 5.9L Cummins common-rail
- 2007.5–2018 6.7L Cummins
Notes: Always degree your cam and verify piston-to-valve clearance. Hamilton recommends using their lifters/tappets and appropriate springs on aftermarket cams.
Cross-Reference / Alternatives
- Same grind in steel: 07-C-188/220S Steel
- Cast 178/208 (towing/response): 07-C-178/208
- Steel 220/240 (high-RPM builds): 07-C-220/240 Steel
- Combo kits with gear & bearings:
- 12V combo: 07-CC-12V188
- 24V combo: 07-CC-24V188
- CPP alternative grind: CPP 07-C-188-220
Recommended Supporting Parts
- Tappets/Lifters: Hamilton 07-T-001 1.45" or 07-T-002 DLC Billet
- Valve springs (24V): Hamilton 07-S-003 103#
- Pushrods (24V performance): Hamilton 07-P-004 12mm
- Cam gear (’03–’18): Cummins 5273413
- Cam bushing/bearing: Cummins 3940059 (OE) or Interstate-McBee M-3940059
- Cam retainers (mechanical/extra security): Hamilton 07-C-002 and 07-C-RETAINER Bronze
- Break-in additive: Hamilton 07-C-001 Zinc
FAQ
Is this cam good for towing and daily driving?Yes—this 188/220 profile is widely used for street/tow setups that want stronger mid-range without sacrificing drivability when matched with proper springs and tappets.
Do I need upgraded lifters and springs?
Flat-tappet Cummins valvetrains benefit from 1.45" lifters/tappets and appropriate valve springs on aftermarket cams. See Recommended Supporting Parts above for matched components.
Will it work on both 12V and 24V engines?
Yes. It fits 1989–2018 12V and 24V ISB applications (5.9L & 6.7L). Always confirm clearances and spring setup for your specific head/piston combination.
What else should I replace during installation?
We recommend a fresh cam gear, cam bushing/bearing, and a retainer to control endplay, plus zinc break-in additive for flat-tappet cams. See the curated parts list above—each link goes to a live CPP product.
