Auto Trans Shifting @ Higher RPM ??

[91-Vetteman]

I pulled my engine out of my 81 this winter and cleaned her up. I did not do anything to the internals (cam, crank, pistons, etc.). Replaced carb, valve covers, air cleaner, radiator, vacuum canister, P/S pump, added a new set of headers and then some routine stuff, distributor cap, plugs, wires, changed trans fluid and filter.

I pulled the engine only, left the trans in the car for my makeover. She is now shifting into 2nd, 3rd, and 4th at a higher rpm then in the past. It feels like she is really pushing before it shifts. Nothing noticeable when de-accelerating.

I would appreciate any simple suggestions for things to check. Thanx in advance.

 

[minifridge1138]

It sounds like your transmission kickdown assembly is not set correctly. It will be bolted to your intake manifold near the throttle linkage. There is a setup procedure that you are supposed to follow to ensure that the car down-shifts at WOT. If it is not set correctly, the the car will shift too late.

Double check that (i had the same problem on my 82 and a friend had the problem with his 84. Transmission shop told him the tranny was bad and wanted $4k to fix it. 10 minutes adjusting the cable and his problem was gone).

Good luck.