I am looking into buying a very nice and clean 1984 F-150 4x4 that the owner put a 302 high output motor out of a 1998 ford explorer in. I was wondering what you good people would think the MPG's on this vehicle would be. Let me know if what you think if you would. Thanks.

 

13-15ish average

 

Yeah ide probably say it would be around the same range, maybe a little higher. Not much though.