Quote:
Originally Posted by pontiacvince
Taking my Suburban in tomorrow to get the rear gear changed from a 3.07 to a 3.42. The lil 307 engine needs a few more RPM's when the 700r4 is in full lockup.
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I hope that takes care of it for you. I had a 350 crate engine and 2004r in my '69 Suburban with a 3.08 rear. Transmission overheated and blew the fluid out of the front seal when it had been locked up for quite a while, on a long trip. (250 miles) The bottom side of the truck and back window were coated with trans fluid.... I put a 3.73 gear in it and never had any more problems with it after that. Let us know if the 3.54 works OK for you.
LockDoc