I just recently put a 96 302 in my 95 f-150 the origional one broke a piston, I put it in and it fires right up put is running rough I'm 90% sure I got everything hooked up although there is a couple plugs that where on the 95 engine that aren't on this one any suggestions I'm trying to do a little trouble shooting

 

I put all my top end stuff onto the 96 engine fuel only thing I didn't change is I didn't pit my 95 intake manifold on the 96

 

How was the 96 engine running before you put it in your truck?

 

I got it from a wrecking yard it had 155-170 comp in all cylinders and 41 lbs of oil pressure

 

Sounds like vacuum, also check the firing order.

 

Ok thanks so there shouldn't be anything different between the 96 engine and the one I pulled out