I have a 98 f-150 extended cab with the 4.6L engine. I also have recently acquired a 89 351ci engine. I was wondering how easily the 4.6L could be swapped out for the 351ci. Does all the wiring match up and everything else or would it be far more work than it is worth. The 351 doesn't cost me a dime.

Thanks

 

It can be done but it's much easier if you go carburated. We just put a built 400m/C6 in my friends 97 xcab 4x4. The C6 bolts up to the stock t-case with the stock crossmembers. The motor mount's are a combination of 78 and 97 and work good. The headers for a 78-79 bronco fit better in the 97 than they did in the bronco (plenty of clearance ) It took a couple hours to have it charging correctly and all the gauges working but it was worth it. You should see the look on peoples faces after you smoke there 5.0 GT's with a xcab f150. It helps putting down 432 HP 496TQ at the wheels . Everything has held up well so far but the 3.73 gear 9 inch and dana 44 from the 78 bronco are scheduled for transplant when the factory 97 axles let go. To answer your question none of the wiring will match up and everything else has to be massaged/fabricated. If you are not very mechanically inclined I'd say keep the 4.6L.

 

I also have a 98 f150 4x4 and i am thinking about doing a swap to either the 5.4 or the 5.7. does everything match up or do i have to change everything? i went from the 6.4L V10 from my excursion and then bought the truck with the 4.6L and i miss the power!! anybody have any idea?

Thanks
D

 

351-5.8l

V10-6.8l

 

Well, that's not exactly the answer I was looking for. But I guess it will have to do. I'm relatively mechanically inclined and I have a brother in law who is really good with motors. However, it sounds like it could be quite a pain in the **** to make the switch.

I actually haven't looked at the 89 engine yet. I was told about it and I spoke up and said I wanted it. I am assuming that it will probably be fuel injected and not carburated. Am I correct.

 

Yes 89 is injected. If you wanted to go carb just change the intake and timing chain cover - for a mechanical fuel pump. Some injected engines came with the fuel pump eccentric already installed on the cam gear. Or run a regulator from for the factory e-pump. It sounds like you have the resources to do it. GET-R-DONE

 

first off, the 351 is a 5.8..no offense..and yes it would be a good swap, my dad had a 351m back in the early 80s and it was a beast

 

Yeah, I actually figured that out. I just didn't round up. If you wanna get technical though, it's really 5.75185L

 

Keep in mind, there are certain federal emission regulations prohibiting placing an older engine in a newer vehicle. I do not know exactly how these regs are written, but you might want to look in to it. Especially if you live in a state that requires emission inspections...

I am not a tree hugger, it is simply that I would hate to see you spend alot of money and time on something only to find you were screwed when it was all said and done.

Mike

 

That part, too.

I truly do not see the point of going from a 220HP/280TQ 4.6L to a 5.8L with less than 200 horsepower. For all that trouble.

You do the same work as going to a 5.4L. You still have to change the tranny, but keeping fuel injection on a vehicle that is already fuel injected is easier, contrary to some belief.

A Lightning drivetrain swap is definitely a bolt in and probably less overall work. Swap one engine out, drop other in. Put stronger 4r100 tranny and 9.75 rear axle in and plug engine harness into firewall. Reflash PATS and be done. For the most part.

And you pass emissions with factory-optioned engine. Anywhere!

Sweet.

 

nice but like i said no offense

 

the 351 definately makes over 200hp thats for sure, and they arent hard to get to produce more afterwards

 

Well I'm still digging through the search results to see who's actually pulled off the 5.8 swap into a 97-04 F150. I'm buying my brothers 81 Stang from him in Jan. He swapped the 4cyl for a 351 he custom built. I need to ask him what he estimates the HP to be in it, but I know that it gets the 81 coupe down the 1/4 in 11secs without using nitro. and thats with a crapped AOD that needs to be rebuilt or replaced. I hate the car, and quite frankly don't care for any mustangs after 1970. I was looking into a Ranger swap, but I been thinking of doing my own version of a 97 -04 Lightning using an XL since theyre easy to find for dirt cheap. maybe a supercab if its not too much.

 

say I wanted to swap the motor of a 1998 ford expedition to a 351w. Would it also be more work than it is worth?

 

Yes.