Official NBS 4.3v6 to GEN 3 V8 swap Guide

[zebra]

T...The plugs on the v6 and v8 02 sensors are diffrent tough. I just cut and soilder the right plugs on the 02 sensor. The swap is really easy i could have been done in 2 days, but the tranny adapter that i didnt need had me messed up pretty bad..

umm... not when i checked. i had a GM parts counter look it up. all 4 O2 sensors and even the physical Y-pipe are all the same from v6 to 4.8/5.3 (6.0 runs duals instead of a y but still uses same oxygen sensors)

...Only problem im having is at shifting the truck revs up a few hundred rpms before shifting. And idea what would cause that?

maybe this ??

The TC bolting up isn't the problem, its whether the snout fits in the crank properly or not. Did you check that out while you were installing?