**Backordered - no ETA, updated 9/23/2021**
The Colt Cams Stage 4 "Big Stick" Cummins Camshaft gives your 1989-2018 Dodge 5.9L/6.7L Cummins the same great driveability, mid-range torque, horsepower, and bottom end as the Stage 3, but with a larger exhaust profile to give you the max flow on large singles or compounds. This camshaft is designed as a drop-in that is good up to 4400 RPM.
- Drop-In Camshaft
- Good Up To 4400 RPM
- Great For Large Singles & Compound Turbos
- Duration @ .050 - INT. 181 Degrees, Cam Lift 0.280, Lobe Sep. 107.5
- Duration @ .050 -EXH. 218 Degrees, Cam Lift 0.323
- Installation Notes:
- Follow Cummins installation instructions, use adequate amounts of assembly lube.
- Retainer Torque - 44 ft-lbs. Use red Loctite.
- When using retainer on Common Rail, clearance is required.
- Always use new or re-crowned lifters.
- Big Stick cast billets require 2nd gen 24V lifters. Cummins Part# 3942565
- If using Common Rail lifted with a larger head, make sure it clears the fuel pump lobe #5 on 12V engines. CR blocks should be okay but you should still check. If your gear is not pressed in all the way, the lifters could touch.
- Extra clearance may be required with aftermarket connecting rods.
- Drop-in cam is applicable in MOST cases, you MUST check clearances. Especially if a head has been planed, block decked, valve recessions..etc. Always check clearances before starting.
- Cam lube on all lobes, lifter faces, 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.
Zinc Additive: Most oil companies have taken out a percentage of additives that are meant for anti-scuffing for break-in on flat tappet cams. A zinc additive must be added to your oil before you fire up your engine for the first time.