Transmissions and DrivetrainNeed help with your trans? Problems with your axle?
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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...
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?
__________________ 7psi run-- 11.89 @ 112 1.64 60ft
My 89 trans am and turbo build here
new setup 383ci pt88<- it lives
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.
__________________ Supercharged small block, Eagle crank, scat rods, trw pistons, balanced, 274 comp cam, 1.6 rockers, Hooker super comp headers, single 4in out the back, and a little red button just in case. Boost referanced Holley carb. Magnafuel pump 1/2'line front to back.JPF wander bar &rear lower control arms.daily driven with the car seat in the back
13.1@109 street tires missing gears and carseat in the back lol
# big ugly is at the trans builder#
street tires missing gears and carseat in the back lol
# 
