The truck was fine all day today, that is until i put full load on it and made a pass from 30 to 120. Got up to 120 and shifted into the last gear and I head a snap, Not loud, no grinding, or any other noise. Then the truck just revved up in every gear but park still works. Ive run the truck multiple times and it never skipped a beat until today.
I checked trans fluid and its full and clean, not burnt. No leaks. The truck has a 4L80E conversion with a converter and a full motor build.
I checked the shifter cable and it was still connected but was binding on the trans pan, so I fixed that and there is now clearance between the pan and front driveshaft. started it and put it in gear and nothing, Trans temp after the run was only 120. I have no lights.
I bought the truck 2 weeks ago from a member here. Has a 408 with a converter, TVS 2300 at 14 PSI, the trans is supposed to be built. The truck makes a little over 800 HP on a AWD dyno. I would asume if the T case chain snapped i would destruction all over instead of just a snap. It literally sounded like a cable that broke.
I spent alot of money on buying this and dont want to spend unnecessary money if I can figure this out.
Any help would be appreciated.