The motor mounts won't work. You will need 300 motor mounts. The wiring harness and ECU also will not work. You need a complete 300, including harness and ECU.

The air injection type doesn't matter. Whichever the motor comes with is fine.

 

87 was the first year for fuel injection (EFI) for the 300 six.

All EFI engines have a air tube to inject air directly into the
cylinder head. (Air injection in head).

It's a long metal tube with 6 ferrule fittings that screw
into the cylinder head near each exhaust port.

Older 300's from around 78-86 used carburetors and also
had air injection tubes. I believe the air was injected into
the exhuast manifold. (Air injection in manifold).

So any 87 or newer engine will be a fuel injected and
will work.

 

king of all swaps IMO
I have a 4 speed t19 behind my 240ci in my 65 f100.
I got a 300I6 and a spare M5od to swap in....if the wife will let me....we dated in this truck.

 

I have to ask, why are you swapping the 302 for a 300?

 

If the 240 is still good, turbocharge it!

 

i am swapping for inline 6 because they last a lot longer than the 5.0. also more torque. better fuel milage as well. im gettin the entire wire harness and ecu motor mounts and rad. i am buying this motor from a guy that has done many of these.

 

302's last a long time if treated with respect. The 300 and 302 can also get the same fuel milage. The 302 actually makes more torque, just at a slightly higher RPM.

I do love the 300 though. It's one of my top five favorite engines. It's bullet proof and can pull a house down if it gets enough traction.

Good luck with your swap! I'll be keeping up with it!

 

Make sure to check or replace that 300 IL6 fiber timing gear set before installation.

 

Reasons to replace a 302 with a 300:

My father had a F150 extended cab long bed, auto trans, not sure which.

One engine blew the head gasket at about 60k miles, another dropped it's mains at 160k

It ran like a dog with three legs and got about 12mpg downhill with 60MPH hurricane winds behind it.

 

just did the opposite swap for a friends dad. the poor inline had 400k on it and blew a head gasket and the 302 was in another truck of theirs that they thought the suspension was messed up (it wasnt tho) so they gave me the truck and inline 6 motor after i was done. now i'm rebuilding the inline 6

you should try and become a member of the Ford Six Performance Home/Index forum. they know WAY too much about that engine. there is even a guy on there with a piggy back mega squirt system getting about 24-26 mpg :-)

 

Like normal I have to disagree that the 300 is better in all aspects vs the 302. Sorry but I like to maintain 70mph going uphill. Lol. The 300 will not fit the 302 engine stands on the frame so you will need those. I actually have all the parts you need for the swap if I can find the engine towers.. Harness, computer, engine... Everything.. Lol

Oh and I've never driven a 300 that got over 16mpg. Even a regular cab short bed 2wd 5 speed that my brother drives only gets 16mpg. When my f150 had the 300 it only got 14mpg.. So don't expect great mileage. Hope the swap goes well!!!

 

I'll offer a counterpoint to Mr. Tatsch: I get 16-17 on the island, but interstate driving was 20-21 and that's 70-75 MPH back on the mainland. The motor has 285k on it and is simply a thing of beauty considering the performance on balance with the amount of torture it has endured.

I have built 3x 302's from scratch. I am a Windsor fanatic. In perfect honesty I must tell you, however, that your 300 I6 swap for a 302 is brilliant. You will absolutely not regret it- the 300 will run like a stubborn beast and not cost you any money. Miles per dollar, I don't think anybody would lay claim to the king of that mountain: the mighty 300 I-6. You will never win a race, but you will finish every time.

If your goal is to have a motor that you can have fun modifying and want to revv it up and hear that beautiful V8 sound, then stick with a 302. If you want a daily driver that you cannot destroy, will tow anything you strap to it, and will get very good fuel milage, then stay 300 and don't look back.

Compatability-wise, I do have a concern for '92 model engine: The 92-96's were Mass-Air EFI. This is a superior EFI system, but you need to take everything that comes with it, including all computers and sensors or you will **** it off and you can count on the "Check Engine" light to stay lit up if it runs at all.

Regulations-wise, if you can find a '96 model I-6, they came with an OBD-II computer, and in some states you will be exempt from running on the dynomometer for your annual emissions check. Some states don't care what motor you have, they only care that it's a '90 model truck and will make it roll for your sticker.

My parting shot: When you do the I-6 swap, NEVER use off-the-shelf motor oil unless it's Shell Rotella 15w-40, Chevron Delvac, or a similar product that meets AFI's "CFI-4plus" specifications. You do need the extra ZMMA additive that diesel truck motor oils have, or your flat-tappet cam will get wiped almost blank within a few months. Motor oils ain't the same as they used to be...it's better for new cars, but it can't love on the old flat-tappet motors like they need.

 

thanks for the reply & thread. can you dumb it down just a bit more, where do i find the answer. i saw over 500 posts.

thanks again

jim

 

I've owned both the 300 and the 302, put 175K on the 300 and 225K on the 302. IMO the 302 was the better motor, more guts, better driveablity, got worse MPG tho. The 300 is fine but it's hyped on this site and others as the be-all end-all of Ford truck motors and that was not my experience.

That said, it's your truck, do what you want. The posters here are correct about the motor mounts, it's not just the mounts you need, you also need the perches that the motor mounts bolt to and you will need to remove the 302 perches.

I've got a complete under-hood wiring harness from my '91 (I yanked the 300 wheezer for a 460) if you need it. I've got a bunch of other parts from the 300 as well but if you are getting a complete donor truck you should be good to go.

 

Well the thing is the 300 and 302 were built for different things. Not everyone wants a truck motor. Some people would prefer speed. That's fine. But I'd be careful about calling one engine or the other better. It's apples to oranges.