2.8 from 85 S10 go into a 90 S10?

[Swole]

I know they are somewhat different motors but can I put a motor from an 85 S10 into a 90 S10 that had the 2.8?

[geoffinbc]

Yes you can. But you are right they are different. You can keep all your 2.8L fuel injection and put it on the old motor. You will loose a bit of power since the valves in the old heads are smaller.

[Swole]

So basically all I'd have to switch is put the FI from the 90 onto the old 85 motor? Any tips on doing this or other info?

[geoffinbc]

You need to keep the flywheel/flexplate on the 85. You cannot use your 90 flywheel/flexplate. You will also need to swap over your accessories, timing cover, oil pan and distributor.

Basically just use the block, heads and internals.

[Swole]

So what if the 85 is a 5spd and the 90 is an auto?

[geoffinbc]

You need to find a externally balanced flexplate or the engine will vibrate like mad.