tranny

[yukonlover89]

i have a 96 yukon that i recently rebuilt the engine in well my neighbor owns an engine shop lol well now i have about 400hp at the crank but my stock tranny isnt helping me get it to the ground any help on this issue i nice five speed would be nice to replace the stock auto trans but i dunno how that swap would be any help? thanks in advance

 

[sasquatch094]

you could put a 4l80E in it, itll be stronger... Umm they used to make stick shift 2 door tahoes and yukons. youll see one everyonce in a while. But if you could get a wrecked on of those that would help ya out the most.. or else order everything from GM classic or something...

 

[yukonlover89]

About how much is one of those trannys?

 

[sasquatch094]

new or used???? check this one out.. http://www.tahoeforum.com/showthread.php?t=8475

 

[yukonlover89]

well yesterday my friend told me that he has a turbo 400 automatic outta his eighty something wreaked pickup would that fit and would it be stronger than my stock one now? thanks

 

[sasquatch094]

im not sure how much "stronger it is", but i believe you still have to change over a bunch of stuff to make that turbod one work...

 

[yukonlover89]

it was on a 350 engine what would need to be changed?

 

[sasquatch094]

yea and what yr was that motor that the hooked up to?? i believe they have different harnesses and junk, idk .. if you think you can do it go ahead, then tell us what it needs to put back in it, but i thought there was a series of parts that needed to be changed.... idk..

 

[95TwinTT]

Not sure you would like going to a three speed trans. If you now have 4 wheel drive, you need to make sure the tail shaft will mate to your transfer case.

The linkage to the shifter might have to be modified and you will need a TV cable hooked to the throttle to control the trans.

Seems to me it would be a lot cheaper and less hassle to just rebuild the existing trans and call it good.

 

[yukonlover89]

alright lol ill probaby just rebuild the one i have or try and find a 4l80e lol thanks guys

 

[peterey2]

if youve got a 4l50e, does the 4l80e bolt rite up in replacement?

 

[Thorschariot]

well yesterday my friend told me that he has a turbo 400 automatic outta his eighty something wreaked pickup would that fit and would it be stronger than my stock one now? thanks

I believe it would fit but the problems are a non electronic controlled tranny swapped on place of a electronic model is the big issue. You asked if it would be stronger...... Hell Yeah... The TH400 was built to take the beatings of a big block motor. TH400 are highly sought after, Even blown 400s bring in good money as they are easily rebuilt.

 

[sasquatch094]

but the 400s arnt as good as the 350s.. no body wants those 400s anymore.. i cant even get 100 bucks out of a 400 i have with only 88thous on it...

 

[BBCCARGUY]

Hi all In all actuality the turbo is 400 trans is tougher than the 350 because of the internals but somethings have to be done to the 400 trans to make it shift like the 350 plus the 400 trans will shift itself out of first if you take it high in the rpm band because of how it is programmed be valve body internals plus the bolt up to the case I think is different shaft size and splines and the overdrive missing will be an issue after time and the 400 doesnt have a lock up converter and the sprag on some of the 400 are weak so you shouldnt do a hard core burnout in first and expect to go to second without tearing it out after a while I think I would rethink the 400 trans and maybe rebuild what you have just a thought.....