Automatic Transmission - Bulletproof tranny?

If money is not an object, who builds the absolutely best 4L60E for a corvette twin turbo application?
Does anyone build a tranny that will actually hold a twin turbo application, with say 650rwhp, reliably?

If money is not an object, who builds the absolutely best 4L60E for a corvette twin turbo application?
Does anyone build a tranny that will actually hold a twin turbo application, with say 650rwhp, reliably?

When I was looking into doing a built 4l60e, I looked at Speed Inc, Century, and of course Rosslers that say their rebuilt 4l60e will hold that much power. I opted for the no overdrive manual valve body th350, car is not a daily driver so really don't need overdrive.

650 RWHP and the massive TQ that TTs make reliably with a 4L60-E? Don't count on it. Sure, you might make alot (100?) of track passes if built *RIGHT*. But if you're heavy footed and drive it on the street alot, expect to be rebuilding alot.

650 RWHP and the massive TQ that TTs make reliably with a 4L60-E? Don't count on it. Sure, you might make alot (100?) of track passes if built *RIGHT*. But if you're heavy footed and drive it on the street alot, expect to be rebuilding alot.

Talk to Carl Rossler....I just had one done recently ($3,771) for a rebuild on my 4L60E...it is their best package and my trany was hurt a little. They Warranty it, and to refreshen the trans is very cheap. I think the big package is something like $2695 plus core, plus 5 gear planetary, plus deep pan, plus shipping, etc.

Cartek uses Rossler trannys
Lingenfelter's uses Rossler Trannys (especially in their TT packages)
people who don't want to pull their built tranny's every month for a rebuild on their street car use Rossler Tranny's!

Lingenfelter's uses Rossler Trannys (especially in their TT packages)
I tend to agree with the Colonel, but this was my first thought.

I've heard the best-built 4L60E is a 4L80E. :drive: