My understanding was that 302= 28oz flywheel and 5.0= 52 oz flywheel. I believe that goes along with fords official change. In 1982 if I'm thinking correctly, havn't had any caffine yet.
I look at it this way................. 85 and older 302 (carb motor, flat tappet cam) 86 and up mustang and I believe some Mark VIII's in that era motors 5.0 HO motor (roller cam, fuel injected) 86 up to early 90's IIRC truck and large car motors 5.0 non-HO (meaning roller "ready" block) If I'm unsure I just pop lower intake off and see if its a roller cam block, or roller cam ready block.
I had a 79 mustang that had 5.0 on the side and 5.0 4v on the air cleaner from factory. All in a nut shell you could say they started Using 5.0L about the same time they started using metric size bolts.
thanks for all the info guys but either way i will do something with it heck its free i have a new 513 cam i could put in it if its a flat tappet cam and make a good thumper out of it but i would have to run a big stall.or if its roller ready i will just build me another roller motor like the one i have in the mav.its always nice to have a spare. john
Don't remember exactly but my 76 Mustang Cobra was a 302 with no referance to 5.0 anywhere. I think 82was the big year for 5.0 to take over and 302 drastically started down the slippery slope to the dept of indentification obsolesence.
