I plan to put a 302 and AOD from a 90 mustang in my 92 f-150. what all has to be switched and rounded up. I plan to use the mustang intake manifold. what wiring harnesses can i use and computers. it is mass air.thanks for the help .

 

I suggest you find a mass air truck harness and use the mustang computer and meter. The computer is located on the passenger side in the Stang.. which is the opposite of the trucks, so the harness will have to be completely disassembled and re wired to fit. You still have to switch some wires around for a few sensors and actuators, but all the major parts are in the same place.

 

are you installing in a 2wd or 4wd. what are you looking to gain from this swap? the 300-6 is a sweet motor and with gas prices being the better motor to run.

 

Do i have to change out more than the engine harness or the rest as well. it is 2 wd. the 300 just doesnt have the power i want and its going in my 65 f-100 probably fuel injection and all. so if o go with the truck harness nothing has to be altered.....i'm fairly used to working with the mustang efi, figured it was pretty much the same. Are engine mounts and such diff. as well? This is gonna be fun

 

As for motor mount towers, you'll need something like this.
Motor Mount Towers, 302-351W (Pair)
Use these along with the 302 motor mounts.

 

Even with the truck wiring harness you will still have to change where a few sensors/actuators wires attach to the computer, but it's very minor compared to rebuilding the mustang harnes, only 4 or 5 wires total that need attention.

OK... I think you have sucessfully confused everyone, or at least me. In the first post you said the motor was going in your '92 f150, now you say it's going in a '65 F100? If it's going in the older truck you may be able to use the mustang harness as is because there is no designated place for the computer anyway, so you'll have to create something.

 

I think he meant his 300 with efi is going in his 65

 

Reading it again I think you are right...

 

Yeah, i meant the 300 was going in the 65. I was just a bit tired. thanks for the hlep guys. maybe i can get going on this soon. any tips are appreciated.

 

what about exhaust. what headers do yall recommend.....i used stck mustang headers on the 65....but i doubt that will do much good in the 92?

 

I've been through this swap, although I used an engine, EFI manifolds, and computer out of a similar truck. It was a pain in the **** and waste of my time and money. The truck was an '87 F-150 4x4. It was a new engine with a nice set of early 60cc 351W heads, an RV cam, and a set of Pacemaker shorty headers. It sure sounded evil with the shorty headers and duals, but it couldn't pull squat without winding it up over 3K. The 4.9L is twice the motor in a truck. Others may disagree, but this was my experience. I loved the truck until I ruined it with the 302. I kept it 6 months after that and sold it. Two cubic inches and two cylinders cost me around $2000 and I lost every bit of that when I unloaded it. A new head gasket for the 4.9L would have put me out one afternoon and $50 plus I'd probably still own it.

I'm telling you all this because I think your setting yourself up for an even bigger disappointment than what I had. The truck EFI manifolds that these trucks used are a longer runner design intended to wring as much torque as possible out of the short stroke 302. If you run the Mustang motor and manifolds, it'll have the shorter runner manifolds and the HO cam. It'll have no torque below 3K where you want and need it. Depending on the gears, you might be lucky to even get it in overdrive. Trucks need low RPM torque and Mustangs need high RPM HP. Crossing the two is not a good idea.

My advice: put a lower set of gears in the '92 and keep the 4.9L. If that still isn't going to make you happy, go find a '92-'93 truck in the salvage yard with a 351W and transplant that instead. Whether you want to go fast or pull a load, a 351W will satisfy you. But if you are bound and determined to stuff the 5.0L in it anyway, then do yourself a big favor and eBay up a stock cam out of a 5.0L Explorer for it and ditch the HO stick you've got. Get a set of truck manifolds and fuel rails as well. Stick with shorty headers. I liked the ceramic coated Pacemakers I had. Also be aware that you're going to have to have the frame mounts as alz mentioned. You'll have to scrounge those out of a bone yard. Have fun with that because they're riveted in. New ones are available, but they're stupid expensive. As for the wiring harness, well, the only easy way to do it is find a '92-'93 with a 5.0L in the bone yard and use the speed density engine harness and computer out of it along with the matching truck manifolds. Then it's plug and play. If you absolutely have to run the mass air system and the Mustang manifolds, then I don't know what to tell you. A '94-'95 5.0L truck would have mass air, but these trucks use an integrated engine and underhood harness. The pinout is different at the bolkhead connector from your '92 and you'd basically have to use the entire '94-'95 truck's harness to make it work. Underhood, underdash, chassis - all of it. Not to mention that the mass air and ACT sensor plugs would be on the wrong side of the engine bay for a Mustang motor's layout. The pinout for the '94-'95 truck computer will be different than the Mustang computer, so you'd have to repin the connector to match. Running the mass air truck computer really isn't a good choice because the calibration will be vastly different that what the Mustang powerplant will want and then it will REALLY run like crap. You'd be better off just building your own engine management harness or modifying the Mustang harness. There is no cheap, easy solution. And after all this, you'll probably still end up changing the gears to get it to run in the HO motor's powerband and be somewhat driveable. See the first sentence after "My advice:". You're right back to where you started.

Does this sound like it sucks yet? Are you thinking it might not be such a good idea after all? I really don't mean to sound like a jerk, but whether you believe me and the other posters who discouraged this swap or not, we're just trying to help. While it's an excellent and versatile engine for lots of other vehicles and one of my personal favorites, the 302/5.0L just isn't a good truck engine. There's just not enough lipstick out there for that pig if you want to do anything resembling truck work with it. Ford used so may of them because in the 90's, people didn't use trucks for trucks. They were a status symbol and a big car. For just pushing an empty truck and hauling groceries, the 5.0L worked OK. Beyond the engine itself, the design and layout of the electrical system in the '92-up trucks doesn't lend itself well to major swaps, either. Damn near every year had a different harness, too. It's possible, but you've got to be pretty careful with which parts you use.

I've typed for half an hour. At least give it some thought.

 

Well thats plenty of food for thought. The motor is actually not an HO. the guy that owned the mustang got screwed by autozone when he ordered the engine and they sold him a non HO 302. I've been considering putting Another cam in it though. it wont be stock. But anyways the stock mustang anifold doesnt make any power over 4800 rpms anyways so maybe it will be fine. The 351 idea has been in the back of my mind.......i've got a 72 351 windsor in my shed. I just dont know much about it. If it would be wise to build it and do a 351 efi maybe i'll do that. Or maybe stroke it!
Just fishing for ideas! the 302 was just gonna be more convenient than building one right now. I've even got a 460 and a 429 in peices the C6 in the corner to back it just has to be built. what do ya'll think i just want something reliable and more power. and still decent on gas!

 

If ya want more power but good on gas,then i'd stay with the 302.I've got buddies with 351's and they swallow gas.You just gotta weigh it out.Do you want more power,or better fuel economy?

 

my bronco with a 5.8 gets better mileage then the same rig with a 5.0.

these trucks are heavy and require you to rap the 5.0 up to get moving. the 5.8 doesnt require that kinda of driving style and will use less fuel. no perhaps your friends 5.8 rigs are carbed which i can understand but if they are efi then they are either driving erraticly or something is wrong with there setup.

 

Buddy of mine has a bronco with a 302, it sucks gas bad. Much worse then my 351 does.

Both trucks maintained the same, both in very similar condition. Both have good solid runners, no CEL issues left unresolved. It is what it is and it just doesn't get any better throwing extra tune ups at it over the normal scheduled interval.

I kinda feel bad as I suggest he get the 302 for better mileage long before I knew how they are. To small a motor for my needs so I've never owned one. He doesn't haul or tow anything like I do all the time. He has a small boat you can't feel behind ya is all.
His 302 in his town car did much better, still not great but better, a car is much easier to push through the air though.