Transmission advice (6L80E Replacement/Build)
 

Hey Guys, my tranny went out on the squirrel so I'm looking at options.

The dealer will drop a new one in for me for 3200, seems like a good deal but it's just going to break again so maybe not.

I'm capable of doing my own labor. So swapping transmissions isn't a big deal. I do a lot of road racing and a little bit of dragstrip.

I make 550 at the wheels and am happy at that power level, might pursue up to 600 but nothing more than that.

I have a rally the first week of August so I don't have a ton of time.

Most of the builds I see are for massive HP dragstip cars. I need something more mild. I also remember hearing people talk about dropping a truck transmission in. Could you make recommendations please?

Jannetty, Century Transmission, Circle D, PATC all can rebuild the 6L80E. I am sure there are others that I am missing, but all of the ones that I have checked into.

Here's another one to check out.
http://www.jakesperformance.com/4L80E.html

wow you popped the trans at 550 rwhp how many miles did it last. did it just go or was there signs? Were you running a tranny cooler?

They were very hard miles. Yes I have a cooler.

Is the 4l80e a direct swap?

4l80e here from RPM Transmissions and its awesome

I do not know if it is a direct swap in your car, whoever you had do the trans for you would be able to advise you on that aspect. But you would be going from a 6 spd to a 4 spd trans so you very well may need a controller also. I'm going from the TR 6060 manual to a 4L80E this winter

Oh thank you I need a six speed.

For about the same price the dealer will get you a new one you could get a built one from Circle D that will handle the 550rwhp without a sweat.

Thanks SRT I'll call them in the morning. Most of the builds I'm seeing online are 5-6K and way overkill for what I do.

Damn they're closed this week.

4l80 is NOT a direct swap

Not even close. Sheet metal needs to be cut on both sides to accommodate.

I would do a Circle D Trans...they seem to have the 6L80 figured out the best.