What other engine sizes can I fit in a 1985 Pontiac grand am? Any info would greatly be appreciated

Welcome nynavykid. well you could put a BB V8 in it, if moneys overwhelmed Your pockets. What size motors in the 85 now? You would want something probley close to that. i believe this car has a CPU so it has to be reprogamed and verious other things would hav to change also. It would be cheaper to just go by a TA or a GTO in the long run.