[Marcus]

Rebuilt my th350 a few years ago & finally installed it last week. Its on a supercharged motor & I understand the issues related to vacuum however it refuses to shift into any gear even manually & barely shifts into reverse (slips). I installed a b&m shift kit that gives me the manual auto option. Does this sound like a sticky valve issue? And which valve should I check specifically? Little worried that I did damage backing out with it slipping. Anyway really frustrated at this point.

[wayneooo]

is the shifter or gear selector moving on the tranny at all. if it feels like its slipping the jam nut might be loose or broken.

[cobalt327]

Originally Posted by Marcus

Rebuilt my th350 a few years ago & finally installed it last week. Its on a supercharged motor & I understand the issues related to vacuum however it refuses to shift into any gear even manually & barely shifts into reverse (slips). I installed a b&m shift kit that gives me the manual auto option. Does this sound like a sticky valve issue? And which valve should I check specifically? Little worried that I did damage backing out with it slipping. Anyway really frustrated at this point.

You added enough fluid? Didn't forget to install the filter? It happens...

It's a good idea to check the pressure at the test port before tearing it back down.

[Marcus]

Yes the linkage down to the tranny is functioning correctly & fluid at proper level. Might try checking pressure but not quite sure how to do this although still think it's a sticky valve.