I just went with 3.42 gears, and want the ability to make the 3-4 upshift at WOT. I want firmer shifts, and I also want to raise my shift points from about 4k to about 5.0 - 5.3k rpm.

What upshift valve do I need to buy, and what kind of kit can do this for me, that I can install (I have done cam swaps, helped with one other shift kit, heard horror stories on TransGo installs.. I also plan on going with a corvette servo.

Thanks
Clint

 

If this is all you want and you don't want a transgo kit get the 3-4 upshift valve from GM, the part number is listed on this board in the archives.
For the wot shift points get a governor calibration kit.

 

A) TransGo Reprogramming Kit
B) GM #8673948
C) IROC Z-28 Governor

 

Where can I get these items at a good price? I know the dealer tends to be expensive.