It seems than at Fri, 25 May 2007 09:33:24 -0500, Dan wrote: > On May 25, 2007, at 9:07 AM, [EMAIL PROTECTED] wrote: > > > Overdrive creates tons of > > heat in any tranny if it's pulling hard and that heat will destroy > > junk US > > made trannies. > > That's what I thought, too, but it wasn't the case, at least with my > 700R4. I pulled a 26', 4000lb airstream for a while with a caprice > wagon, and installed a trans temp gauge and a big cooler.
The GM 700R4 is know to slip because the piston for 4th doesn't supply enough force for the band. Especially if the engine is strong. I believe the Corvette version solved the problem. But it is risky to generate lots of torque in overdrive on a stock transmission. With a temp gauge, I would think the slip would cause enough heat to be obvious - but maybe not soon enough. On one of the 700R4 that have passed through my Suburban I could see the slip with the tachometer. At that point the transmission was about to loose the front pump. Quite unrelated to a slipping band! I'm glad yours survived. *smile* -- Philip, pretending to be an expert.
