5.0l Sefi Engine Swap

UncleJim · Mar 2, 2004

I have a 1974 uncut EB. The engine was abused, so I took it out. In the meantime, I found 5.0L SEFI engine out of a 1997 Mercury Mountaineer. I am interested in the most trouble free, inexpensive method of making the conversion.

Gunner · Mar 2, 2004

more trouble than it is worth in my opnion. just get online and buy your self a direct replacement. go to google and search for your year ford crate engine. you can find some good deals on remanufactered engines that even have a warranty and its a direct replacement. you wont need to put anything extra other than the things you want to add. dont get me wrong i mean the mercury engine may fit but to change it to an efi just isnt worth it to me. but i have stated many times that i prefer a carberator anytime.

Past_Miner · Mar 2, 2004

Talk to Ryan at FordFuelInjection.com, he can give you the info you are looking for. Usually the swap is made with a Mass Air Flow computer from a Mustang and a custom harness. It's really not very hard to do on a 5.0.

SaddleUp · Mar 12, 2004

Run some searches on Ford EFI swaps. There are several articles on how to do this. Most are sepcific to Mustang motors however there should not be very much difference. I just finished putting an EFI motor in mine from a 1990 Mercury Grand Marquis. The swap itself took a week to do. From what I understand the motor you found is an even better choice due to the intake and heads on it. I do suggest getting as much as possible from the doner vehicle. (Details on what you need are in the articles already done on this subject)

Rick

Guest · Mar 30, 2004

I recently did ALOT of research into doing this myself. That motor is a great motor if you don't mind a little more work and money involved in the swap. There are plenty of resources out there (www.corral.net/forums/ is a great one to start with). The heads and intake are the best part. Some people say that these are the best of the breed. You will need to trash the wiring harness and buy a stock one from a 87-93 mustang or an after-market one. The fuel rails may have to be replaced. The computer won't work from the explorer, you'll need an EEC-IV computer and MAF from an 87-93 mustang. The cam in it is ok for low end torque (pulling that soccer mom vehicle around) which may be good for the Bronco, but if you want more power in the mid and upper range you'll need to swap that also. The heads will need specific shorty headers (can see them here www.vintagebronco......Explorer5L.html ) due to spark plug clearance problems (the spark plugs on the gt40p heads were relocated to give better combustion). The part number for these from Ford Racing is M-9430-P50 and about the best price new on these is $230 here: www.oemfordparts.com. The distributor and coil will have to be replaced (can't use the coil packs with EEC-IV without spending alot of money). That covers most of the high points, just take your time and becareful. This motor can be a real workhorse.

-Jason C