Colt Cams Cummins 4BT & 6BT Stage 3 Cast Billet Camshaft | 1994-2016 Dodge RAM Cummins 3.9L / 5.9L / 6.7L

Colt Cams is proud to introduce our latest grinds for the Cummins 5.9 - 6.7L B series engine! We've worked long and hard to develop these great new profiles. We've dyno'ed some 50 different combinations of durations, lobe separation and installed centerlines to come up with the ultimate cam for your Cummins 5.9 - 6.7L. We have a large quantity of new cast billets in stock ready for you! Our 5.9 - 6.7L Cummins cams are available in 6 stages.

Stage 3: Nicknamed the "BIG STICK". It has gained the most popularity. This cam delivers the strongest mid-range torque and H.P possible, but still has good bottom end and drivability. No mods are required, but we do recommend a set of springs if revving over 3000 rpm.

Note:
When we say our camshaft is a straight drop in, we mean: In almost all cases. However, due to many contributing variances in an engine: heads planed, block decked, valve recession etc... any cam including stock, should always be checked for clearance before start up! CAUTION! IF USING AFTER MARKET CONNECTING RODS, EXTRA CLEARANCE MAY BE REQUIRED ON CAM CORE!

Specs:

• INT - Duration @.050: 181 - Cam Lift: .280 - Lobe Sep: 106
• EXH - Duration @.050: 210 - Cam Lift: .307

Valve lash all grinds: INT: .010" EXH .020" cold.

• Follow Cummins installation instructions, use adequate amounts of assembly lube.
• Retainer torque 44 ft lbs – use red loctite.
• When using our retainer, clearance is required on C.R.
• IMPORTANT NOTES: C.R. cams cannot grind to stage 3, only to 1 and 2. You must use 24V 2nd core or new cast billet cams for anything over stage 2 grinds.

Break-In Procedure:

• Cam Lube on all lobes, lifter faces and oil pump gears.
• Oil all bearing journals and lifter barrels.
• Always turn engine over by hand before starting, check for clearances and proper timing location.
• Fire up to 1800 – 2000 rpm. for 18 – 20 minutes.

Re-grinds/Cores:

When sending us your camshaft(s), please remove the gear(s) before shipping, and we highly recommend not to ship your camshaft in tubes! When sending in your cams, via any courier service or the post office. Please put as the value of the cam or cams to be under $10.00 total. This falls under NAFTA and no duty charges will be inflicted on you. Please put on the waybill as well as on the package: "DAMAGED CAMSHAFT FOR REPAIR AND RETURN". Make sure the cam cores are packaged well in a sturdy container. Please include all cam related information as well as name, return address and telephone number. Send to: Colt Cams Inc. 2325 264th street, Aldergrove BC V4W 2L5 Canada