DavidNPro
Silver Member
Stock clutch and transmission are good to 800ft/lbs without abuse if you want to hot rod it.
I have one of the pre-07.5 5.9's. I have had no problems with it other than the clutch. I put a very mild tune on it, and I do not really drive it that hard. But the clutch started slipping almost immediately with the 6 speed. Even towing our 26ft pontoon boat it would slip, I was afraid to even try hauling my tractor with the backhoe and load on it.
Ended up changing the clutch and the flywheel out for a Southbend offering, my wallet is over 1k lighter, but definitely no slip in it...:thumbsup: