Hey, so I'm looking at removing the orig. trans to the w-30 as it needs rebuilding ( seals).
What are your thoughts as I'm having trouble..

1- remove trans. put in a bag and store it for safe keeping. Install performance th400?
2- rebuild/ install original unit.

 

rebuild I don't think you will get that much more out of performance TH400 than you can by tweaking the one you have.

 

BY the way I upped the stall converter on mine just because I believe its a 3000 or maybe 2800 now. I like it.

 

Well I should have said, I don't have enough faith in the shops around here. Especially 3 friends of mine had issues at every shop around me.

Thinking maybe doing a overdrive, 4l80e

 

Option 1. That is what I plan to do to mine so that when it is time to sell the W30, I will say "...there is its original number matching OW".
Also, unless you really trust your local shop, what if they accidentally screw something internally or mess with the OW tag.

 

Also, the shops want 2,000. Were I can buy aftermarket one for 1500