302 To A 351 Swap

Shivesy · Jun 7, 2004

My son and I have a 93 Ford Bronco 4WD and would like to make this a project truck and add a 6" suspension lift and tires and gears. The Bronco has a 302 tired motor with 177,000 miles. If we were going to do the job right I would think that a 351 motor would be the way to go. My question "is this an easy swap?" Any sites I might go to that has detailed info? What size tires will fit under a 6" lifted Bronco? We were thinking 36" tires. Thanks!

sweepersrgr8 · Jun 7, 2004

Yes, a 351W will sit right in the 302's place, on the same mounts. The 351W is wider than the 302, so you will need to cut your crossover pipe(exhaust), and add a piece in. You will also need the computer from a 351W truck(pre '94 60 pin vs 104), but this is just a plug in, as well as all the brackets, crank pulley, flywheel, starter and lower intake. The rest you can swap over from your 302.

My brother-inlaw, and I just completed this swap on his '90 F150, but we had a donor truck, and complete 351W.

Seabronc · Jun 8, 2004

There are a lot of crte engines available if you do a Google search on Ford 351 Crate Engine. You can also order from Auto Zone.

Good luck,

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cowboydan · Jun 12, 2004

if i have efi, can i put in a 351 carb, or will it mess with the tranny?

sweepersrgr8 · Jun 12, 2004

Depends on the tranny, If it's a C6, or manual, go for it.

Txquadhunter · Jun 12, 2004

cowboydan said:
if i have efi, can i put in a 351 carb, or will it mess with the tranny?

If you've got a C6, AOD or Manunal no problems with tranny since not Computer controled. You'll run into the most trouble swapping a carb'd motor in a EFI will be redoing the Ign. system to work with a Carb. Theres a few aftermaket units like the MSD 6a. swapping back to a carb's duraspark system you'll have to rewire the whole system.

The 302EFI to 351EFI swap is like stated. pretty much bolt in job.