i think the new turbo parts will fit on the old engine

waht year is your truck?

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id say no special tools just swap it out both whould bolt up to each other but id recomend just spwaing all but the block

 

About the only issues you will have is with electrical connectors. Keep the wiring harness from your 91 and put it on the 94. The alternator connector will be different also, as maybe the belts, so you may have to find a different alternator that will mount, use the serp belt pulley, and still connect if the 91 has the good old external regulator. You didn't say anything about your transmissions, so no comment there.

 

The tranny will be swapped too. The new one is a rebuilt, but thats all I know... Will get back with more info ASAP. Are the trannys different between these years?

 

is it auto or manual?

I think the manual is the same.

The auto will probably have different shift linkage, but as long as you have the other trans you can easily swap it. also you will probably have to swap the mlps on the trans. That is the black sensor right by the shift lever.

 

might wanna dent in ur cab where the down pipe goes down thru. I did the same thing with my 92 . I used a sledge hammer when i had the motor out .I thank god that I did that because my ats downpipe went on really well.