4t80 (Page 1/3)
madbrad01 JUL 08, 08:46 AM
Still thinking of a ls4 swap, Is it possible to use the 4t80e trans?
fieroguru JUL 08, 07:57 PM
It was done once by Bfurches on LS1 Tech
https://ls1tech.com/forums/...id-street-strip.html
https://ls1tech.com/forums/...uild-starts-now.html

Took some cutting grinding between the LS4 and 4T80.



Transmission control was the biggest issue. He used a 24X engine with the 411 ecm and the 4L80 transmission control, but it was till missing some signals.

He eventually fragged it behind the turbo LS4. It was a high miles transmission before, so who knows how long it would have lasted behind a stock LS4.
https://ls1tech.com/forums/...e-update-broken.html
olejoedad JUL 08, 10:28 PM
The 4T80 is a beast of a transmission....
madbrad01 JUL 10, 08:50 AM
Thanks for the info. I need to do more reserch on the starter. I'm surprised this has not been done more.
Formula JUL 10, 11:12 AM

quote
Originally posted by fieroguru:

He eventually fragged it behind the turbo LS4. It was a high miles transmission before, so who knows how long it would have lasted behind a stock LS4.
https://ls1tech.com/forums/...e-update-broken.html



He just posted a couple days ago on facebook

https://www.facebook.com/FurchesPerformance/

It's still a 4t80, but im not sure if he eventually got it figured out or just keeps replacing them. I have a 4t80 on my 3800 turbo, but haven't put it through its paces.
jb1 JUL 12, 04:00 AM
I have a couple 4t80e , one thing is they eat up quiet a bit more power than what the 4t65e does but will take a beating.. I know one has got theirs to work with the stock 3800 pcm , I'd just spend $395 on a controller and be done with it.... I will get around to putting one of mine in a 3800 turbo car at some point
http://www.e-transcontrol.com/gm-transmission/
Dennis LaGrua JUL 13, 09:39 AM
The 4T80 is a strong transmission for sure but the LS4 uses the 4T65eHD and they hold up fine. They can also be built stronger to take up to 1000 HP. Forum member Darkhorizon (Scott) ran a 9.87 1/4 mile time @ 147 MPH with a stock 4T65eHD. Point is that you may not need a 4T80 and the added weight and swap work that it brings.

------------------
" THE BLACK PARALYZER" -87GT 3800SC Series III engine, custom ZZP /Frozen Boost Intercooler setup, 3.4" Pulley, Northstar TB, LS1 MAF, 3" Spintech/Hedman Exhaust, P-log Manifold, Autolite 104's, MSD wires, Custom CAI, 4T65eHD w. custom axles, Champion Radiator, S10 Brake Booster, HP Tuners VCM Suite.
"THE COLUSSUS"
87GT - ALL OUT 3.4L Turbocharged engine, Garrett Hybrid Turbo, MSD ign., modified TH125H
" ON THE LOOSE WITHOUT THE JUICE "

fieroguru JUL 13, 07:08 PM

quote
Originally posted by Dennis LaGrua:
the LS4 uses the 4T65eHD and they hold up fine. They can also be built stronger to take up to 1000 HP.



When used alongside the LS4, the 4T65e-hd might as well be made of glass. They break all the time... even when still under warranty. It is pretty common to find a GM rebuilt transmission with the LS4 when you buy a take out.
http://www.gmls4.com/index.php/topic,33.0.html

I am 1 for 3 finding a factory rebuilt transmission (although it really is 1 for 2 as my first LS4 only had 18K miles):
sourmash JUL 13, 08:20 PM
You must be right. I've got one from a Buick Riv with 3800sc, too.
madbrad01 JUL 14, 08:19 AM
I'm going with the ls4 with plans on building it. i don' t want to drop thousands on a trans just to have it break again, That's why i'm asking all the questions.