600 Hp Ls1

[camcojb]

Originally Posted by 68topls

A 4l80E can handle the power stock and a 4L60 will need to be built up. I would prefer the 60 because of the weight, form factor and the fact that t can be easily upgraded to be as good or better than a stock 80. a good 4l60 would probably include:

5 pinion rear planet.
Z-pack 3/4 clutches.
Upgraded bands
Billet 2nd servo
Transgo HP reprogramming kit
Double cage forward input sprag
Good external trans cooler

Thats about $300-375 in parts. Take a look at websites like at http://www.transmissioncenter.net/4l60e.htm or http://www.transmissioncenter.net/4L80E.htm and look at what upgraded parts they use and mimic. Transmission builds are not that difficult and good cores are everywhere. If you go with a 4l80E try and get a 96 or higher. There are mostly found in trucks.

A stock 4L80E is good for 700-800 easy, even though they aren't rated that high. It takes a pretty built 4L60/65 to match. Doable, yes, but not at that price unless you can do all the mods yourself.

I paid $2500 for a 4L65 that could handle a 1000 hp twin turbo LS2. Trans worked great, but cheap it was not.



Jody