Stage 4 Camshaft for Cummins 5.9L/6.7L
Stage 4 Camshaft for Cummins 5.9L/6.7L
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Colt Cams proudly presents its advanced camshaft profiles optimized for the Cummins 5.9L & 6.7L B-series engines. Through extensive research and development, including dyno testing of over 50 combinations of durations, lobe separations, and installation centerlines, we have engineered superior performance grinds tailored for these applications.
Our Stage 4 camshaft is similar to the Stage 3 "Big Stick" with a larger exhaust profile. Great for max flow on large single turbos and compound turbos. No modifications are required for installation, though we recommend upgraded valve springs for operation above 3,000 RPM.
Quick Facts:
- 181/218 profile
- Drop-In installation on most engines
- Great for large single turbos & compound turbos
- Improved fuel efficiency
- Reduced smoke output
- Drop in exhaust gas temperatures (EGT)
- Reliable performance up to 4,400 RPM
*Always check valve clearances before installing any camshaft
Break-In Procedure
Break-In Procedure
- Apply Cam Lube on all lobes, lifter faces, distributor gears, and oil pump gears.
- Oil all bearing journals and lifter barrels.
- Always turn the engine over by hand before starting. Check for clearances and proper timing location.
- Fire up to 1800 – 2000 RPM for 18 – 20 minutes.
Note: Most oil companies have taken
out a percentage of additives that are meant for anti-scuffing for the break-in on flat tappet cams, so please ask your local auto parts professional for the best zinc additive they have and add it to your oil before you fire up your engine for the first time (we prefer ZDD Plus).

$699.00