Not a good idea, IMHO. You'd be better off selling your 5.0 engine and
buying a 4.6 engine.
The 5.0 will fit in the T-Bird, but you'll have to swap the trans too.
Because the engines are different, 5.0/4.6, the wiring harnesses and
computers will be different. The transmissions are different as I'm pretty
sure the 93 has a computer controlled trans and the 87 has an AOD with TV
If you live in a state with any emissions check at all, you're really in
trouble. If not, you can probably get by with it.
Actually they still had 5.0's in '93, not 4.6's, so it should be easy
as pie. I would say it should drop right in place of the original.
Wiring should probably also hook up directly as I know they DID in fact
have MPFI in '87. Also, the T-bird and cougar still had the regular
AOD with the throttle valve cable, not the computer controlled one.
The 4R70W didn't make it's way into the MN-12 platform until 1994.
Everything is a direct swap.
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