Im guessing this is a no-no?


I know the 4l60e would fall apart when boosted in OD. So im curious, how would a decently built 4l80e fair?

 

An early style, well built 4L80E should be able to handle 800+ RWHP in OD (but be sure and manually shift from 3rd to 4th so the over-runs support gears 1-3).

 

Thats what ive got Slow, picking it up tomorrow, this was more for future fun.

Im just doing a basic rebuild with some tips that i got from a special someone, LOL.

Until ive got all the jack to get together, by the way, ill be taking you up on your offer to get this thing working with the computer

 

No worries, you know how to get ahold of me

 

Hey I have a 4L80E too and it's out getting rebuilt. Are you guys using the stock (PCM 99+) to control this transmission? Mine is full manual with a vaccum modulator to regulate line pressure which it does really nicely. I've tossed the idea around of making it auto, but personally I kind of like shifting it. Since there is no clutch pedal it takes the only gripe issue I have with a manual that gets tiring.

And to answer your initial question, I have floor'd my car a couple times in 4th gear, but not too much as it goes waaaay to fast, waaaay to quickly for a semi-populated highway or freeway in a f-body with stock brakes lol.