I have a 1986 F150 that has a 302 Fuel Injected in it. I have had a little work done to the motor, like valve cover gaskets, and intake gaskets. Once you start it (it starts fairly well for being 21 years old) the oil pressure goes up to normal, then after about 15 minutes of running the oil pressure goes down below the low warning. So I have thought about it, and i dont want to invest anymore money in this motor. I have said since I got the truck that eventually I would put a 351 in it. Well I think the time has come. So, would a 351 Winsor work in this truck since it came with a 302 Fuel Injected? I didnt know if all of the emmision things would make a carburated motor immpossible to do. What would I have to do to make it work at least? I dont know what type of transmission it has but would I have to get a different transmission also?
Thank You for your time.

 

Would it be better for me to try some easy cheap checks to see if this motor is still good but just has a little problems? If you know any simple solutions to the problems I'm having, please respond.
Thanks again.

 

I would keep the FI injected engine. It's resale value will be higher, and fuel injection runs so much better than a carb.

If you have run this engine very much, you should have a feel for the condition of the engine.

How much oil does it use?

Any knocks during cold start up or after warm up?

I have seen a lot of money wasted on a faulty oil gauge/indicator.

The 302 is a little bit small for a full size truck, but if you really need a 351w, I think I would sell your truck and buy one with a 351w FI engine in it.