Maximum HP from 420 Automatic Tranny?

[hypebeastdizz]

How much do you think is too much power for the 420 tranny?

I love my automatic (yes I know I'm different haha)

I was thinking about rebuilding my engine first then adding a 8 PSI turbo down the road..

Do you think my stock tranny is capable of holding up to it?

Or would I be putting sacrificing my reliabitlity in the process?

 

[pbwu1f]

I would guess it would be good up to 300-350 stock. If you want to upgrade clutches, get a shift kit, and a better converter, you should be good to 400-450. I'm not 100% sure, but that's my guess.