Reply to "Trans slipping ?"

Dennis make sure that the fluid level is correct. Put in some GM posi addative.
The problem is probably in the suspension, not the clutch or posi.
The Pantera posi is very quite and smooth.
If the clutch is going to slip, and at 500hp it can, it usually would be in the top gears when you floor the accellerator. You will get a sudden rpm rise without corresponding increase in mph.
The 11 ich seems to slip more then the 10.5 for some reason on the Cleveland. I never could figure that one out. It could be iron versus steel billet flywheel also.
My steel flywheel gets glazed with hot spots all over it. The cheap iron one doesn't. Figure that one out.
The dual friction, which I've got in, is thought to have a maximum hp holding power of 500hp.
You are right at the limit. If you hit it with nitrous you will definately toast it.
Dam, what's a boy to do? Can't use my 1000horses no place! My Ranch is really getting crowded here. I'd go to Australia but they drive on the wrong side of the road.