92Flareside

I have a '92 150 that currently has the 5.0L in it. i just built a 5.8L for it, but now i need all the parts to make it run correctly in the truck. Research tells me that i need a new computer and wiring harness, but i cant seem to find anyone that makes the correct harness (even painless doesnt carry the right one...) The part #'s of the harness's that i need are F2TZ12A581C and F2TZ12A690AA. If you know anywhere that has them available (new, N.O.S., or refurbished) or if any of you have one lying around in your garage but no longer need (as long as its complete and in good working order) im willing to take it off your hands for a fair price. Also, are there any other potential problems any of you can foresee me facing? Thanks for any help!

Eagle Kammback

Have you tried Painless?

92Flareside

Yea, they were the first place i went to. They have a universal harness, but id rather have the correct one. They said something about making one up for order but all i heard was $$ rushing out of my already thin wallet! Still an option, but like to see if someone already has one.

Eagle Kammback

LMC Truck might, I'm not sure, and they might be able to make you one if they don't already

NGM

Why do you need a new wiring harness and computer??? We have put 351Ws in many 'Stangs with no computer or wiring harness change. You just have to have a bump stick thats the same firing order as the 302 one. I don't think the truck had the HO firing order. Thats what the 351's run stock if I am not mistaken. BTW you only need to post this in one spot. We will find it.

92Flareside

Maybe on a carburated engine, but on the EFI engines the computer is different and the sensors, ect, are located at different points. The two engines have specific harnesses. I originaly thought that the two engines were easily changed out because they are basicaly the same engines, but unfortunatly, from what ive been told recently, is that the electronics are not.

Eagle Kammback

just wondering, what is the bore and stroke on the 302 and 351s

92Flareside

uh...i believe 302 is 4.000" bore by 3.000" stroke, 351: 4.000" X 3.500"

NGM

Well damn I guess all the 'Stangs we put 351's in arent running. They are just a figment of my imagination. How are the sensors in diffrent locations when the heads are the same? The oil pans are the same. The intake is slightly wider at the bottom but the upper is the same. You were told wrong..The diffrence is the firing order. You have to have a cam that is the same firing order as the 5.0 that was in there. That way the injectors fore when the intake valve is open and the spark plugs fire when the valves are closed. The brackets for the accs are diffrent due to the wider block. You can use the same accs though. They bolt right up.