anyone ever done one, im doing a turbo motor and gonna make some pretty high numbers and i cant relly on a 700 to do the job even at level three they are just at 75o horse rated...

and the car is a driver, so i need an overdrive, this is where the 4l80e comes in, its basically a th400 with an overdrive stage one with upgraded sprags and drums holds over 1200 horse which is perfect....but i jus dont seem to have enough info on anyone doin this swap...i searched and pretty much nothing, i need to know a few things

is the TC the same

can i use the same driveshaft

crossmember will have to be made right

will i have to mod the tunel to make it fit..

and im goin with a manual valve body so no need for the electonical controler


anyone done this....if so let me know what it took....im pullin the motor to start fabbin in a week or two and id like to swap the tranny b4 i drop teh motor back in...

 

Not done it yet but soon, but I have a friend who has done it.

* New TC
* New driveshaft
* New crossmember

thats it.

 

Have you ever considered a built t56?

did i just read that you dont wanna use a stage 3 700r4 because its rated at 750 and your gonna be making more than that AND drive it on the roads?? dude thats badd a$$ you got any pics or anything to tease us a bit or a thread that we can follow?

 

hey gta, can you get more info from your friend, if you can that be great, what size driveshaft, converter splines are differ i assume, and how hard was it to make the crossmember....and whta did he do with the torque arm...

and as for my car, its a 87 iroc, gettin a big, big turbo on it in the next week or two....im gonna start fabbin up the kit....so i might cracnk the booost up high one day and i dont wanna worry bout the tranny...

 

Converter is different, it will likely be the most expensive piece to the puzzle. The driveshaft will need to be shorter(you'll need more than a stocker for that kind of power anyway) and will need the Th400 (iirc 32 spline) yoke, and you will need to fabricate a crossmember. A little modding with a BFH as neccesary for clearnace and you should be fine.

 

not to resurrect an old thread but did you ever put in the 4l80e and if so what driveshaft?

 

nop he never did.... i believe he went 700r4

 

Lol figures I'm lookin to a 80 swap too