I just purchased a Procharger F1R last week and will be using a LS2 402 along with it. I'm shooting for around 900RWHP possibly a little more and am looking for 9's through the quarter. I was originally going to go with a Th400 but am not liking not having overdrive...

So I am looking for either FLT or Performabuilt to respond here and chime in on if either company has a 4L80 that can hold up to that or if I'll need to be looking into a different trans...

Thanks guys!

 

I have built 4l80e transmissions with more rwhp than what you have mentioned. Feel free to give us a call. Vince

 

V whats the diffrence in weight of 4l60e an 4l80e?

 

About 40 lbs difference without converters. Aftermarket converter weight would be similar.

 

So it would be a good up grade for our cars huh .

 

And what all I have to change to use this on a 99 ws6?

 

https://ls1tech.com/forums/automatic-transmission/699277-whats-needed-4l60e-4l80e-swap.html

there is a sticky on how to do the swap already.