newdad

i have a '90 2wd auto and wondering how hard it would be to swap the engine and trans from my '95 2wd auto into my '90?

TIMMY22

You're going from 2nd gen to 1st gen. Just a few things off the top of my head. The 95 is P-pumped. The electrical system is totally different. I noticed my 90 has no crank sensor. 90 had no overdrive.

It would be much easier to swap 93-90 than 95-90

newdad

lockup and od are going to be controlled by toggle switch. i've got that figured out already. i was really talkin about like for instance is it a drop in or is a bunch of modifications going to have to happen?

wannadiesel

It'll pretty much drop in there using the 1st gen motor mounts.

You'll need to move/modify the trans crossmember due to the added length of the OD unit.

Fred Swanson

newdad, its not that bad. Does the 90 have cruise? Do you have everything from the 95 at your disposal?

The sensor connections are different, for like water temp and such, so you either adapt the connector or swap the sensor back to the ones from the 90 engine.

Swapping motor mounts over, the fan hub needs to swap over too. Trans crossmember is going to have to move back one set of holes. At least on my RamCharger it did. You have A/C too? preserve the system, and move the compressor from 90 to 95 motor when its coming out, as the bolts are a pain in the truck.

Your throttle cable will hook up, but you'll need to shim it some, as the pedal will get lower, and you'll lose some throttle range.

newdad

ya i have the whole truck. im not much worried about the ac system. would it be easier to just use the crossmember out of the '95 or just use the one out of the '90?

Fred Swanson

those don't swap for the trans, just have to move it back a little

newdad

ok. im guessing i would have to do something about the driveshaft? could i use a driveshaft out of a reg cab lwb 2wd 2nd gen?