transmissions swap

mailman · Post by **mailman** » Tue Mar 06, 2007 6:23 pm

I'm sure some of you veterans have been here before. I have a 87 with a bad tranny and a 84 parts carn with a good tranny can you just swap the tranny part seperate it from the transaxle part. will this work. The Mailman

waynehoc · Post by **waynehoc** » Tue Mar 06, 2007 7:01 pm

The '87 is a different ratio than the '84; you can't (don't want to) mix them. But if only the '87 trans is shot and the diff is okay, you might be able to swap over the trans only from the '84 to the '87.

Someone here should know if that is a possibility or has been done before.

mailman · Post by **mailman** » Tue Mar 06, 2007 8:29 pm

Yea, just the tranny on the 87.was hoping i could just swap the tranny and keep the diff the same. the mailman

keith · Post by **keith** » Wed Mar 07, 2007 4:53 am

I think it would be easier to swap the complete transmission AND the rear differential from the parts car.

takza · Post by **takza** » Wed Mar 07, 2007 7:12 am

If your clutch is OK...the trans by itself is doable. Probably easier than doing the trans/diff as a unit IMO. Main issue might be getting it mated up again...you need to read the writeups and responses on the subject...might be able to pull the input shaft....though it just takes some messing around to get it in...a couple of hangups.

Post by **Petros** » Wed Mar 07, 2007 7:12 pm

I do not think I would attempt to leave the front diff. in the car and swap only the trans. I would pull the whole transaxle and swap out the front diff with the transaxle out of the car. Better access and less chance of damaging the trans.

I have not done this, but I have pulled the trans out and replaced it several times on the different cars I have owned. It is not much more work to pull the whole

I am with keith, I would swap both the complete transaxl in the front, and the diff. in the rear. You have to pull the rear axles out about 6 inches by removing the brake backer plates. The center section then unbolts from the front of the axle housing. You could also swap out the whole rear axle.

The older one has the higher gear ratio, which drives a bit quieter at freeway speeds because the engine turns slower. It might also result in better gas milage. The later one has a higher gear ratio set, which would be better for performance driving, and lots of off-road driving. I considered switching over for that reason, though I like the better MPG and quiet ride.

mailman · Post by **mailman** » Fri Mar 16, 2007 8:51 pm

wish i had a way to post pics. The tranny is out waiting for the transfer. pulled the tranny, dirve line and one axle, have to get the right size socket for the other one. Steve

shogun · Post by **shogun** » Mon Mar 19, 2007 11:16 am

if its a 87 terc and a 84 tranny i think it wont work on 4wd the gear ratios are different in the differentials