My engine is all messed up and im replacing it so i need advice.. I have a 91 f150 and im not even quite sure what year the engine is in it right now cuz my brother bought it and it went out after a while and he gave me the truck to fix up. Anyways I've been scoping out Craigslist and calling local junk yards and what not and they all seem to have like every year other than a 91 351w.. so my question is can i drop in a different year motor into my 91?

 

Yes just need to match the pollution and egr stuff to the truck you are putting it in, 302\351w direct swap.