94 Gt to 84 Fox

[351C-84'Fox]

Hello, new member here. I have done a ton of reading on the threads about putting a 94 5.0 in a foxbody. However I haven't found much on the install of the power train in a 1984 factory carbed Fox. That being said I have several questions about this install. 1st this is the specs of the current car:
-engine bay stripped except for the wiring harness and brake lines.
-Factory K member and steering
-5 speed tranny
-No radiator
-no previous engine or accessories.
I have a lightly wrecked 94 GT with everything there. I will be doing the swap with spindles and rear. Questions:
-advice on using the sn95 engine harness for the fuel injection control?
-What are the specific reasons why the accessory brackets and locations can't be used?
-Why does everyone switch the upper plenums?
-Since the radiator is new in the 94GT can I just full swap the radiator and engine in the car? Yes I know it's electric fans and I will have some wiring to deal with it.
-will the oil pan clear the k member?
-why are people saying to swap the front timing cover?
-is the computer system worth damn?

I diagnose wiring and make wiring diagrams for truck upfitting and equipment install so I'm not worried about the wiring much however advice or what someone else has done is always helpful. I'm also very mechanically inclined from years of wrenching on pro drag racing circuit. I also have a holley sniper I guess I could use if it's easier, but this is a friend's car and I would prefer to keep the sniper for another build. Any help would be appreciated. Thanks!
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[stackz]

dont forget the ccrm over by the radiator if you retain the sn harness/ecu. sn95 accessories are wider than fox ones and they go in hand with the timing cover. sn upper intake manifold is longer and curves as compared to the fox and not as much aftermarket for it. for this reason a lot of 94-95 owners swap the fox intake to improve their options and such.

if it were me, I'd just do a full harness/interior swap as I like the sn interior more than the 84-86 interior.

 

[LILCBRA]

Having swapped a Lincoln Mark VII 5.0 into an 84 3.8 CFI car, I had to swap the fuel lines, you may run into this too. The 94-5 T5s had a longer input shaft which moves the shifter back about an inch compared to the earlier Fox cars. Also, I believe the oil pans are the same from 79-95, so I suspect you'd be ok there.

 

[limp]

Do you have the complete engine and accessories from the 84 still?
Is the 84 engine bad? is this the reason for the swap?

 

[351C-84'Fox]

dont forget the ccrm over by the radiator if you retain the sn harness/ecu. sn95 accessories are wider than fox ones and they go in hand with the timing cover. sn upper intake manifold is longer and curves as compared to the fox and not as much aftermarket for it. for this reason a lot of 94-95 owners swap the fox intake to improve their options and such.

if it were me, I'd just do a full harness/interior swap as I like the sn interior more than the 84-86 interior.

Wow never knew the complete interior and harness would work for the whole car. That's awesome. Any ideas on the door panels?

 

[351C-84'Fox]

Do you have the complete engine and accessories from the 84 still?
Is the 84 engine bad? is this the reason for the swap?

It's a rolling chassis, so I have none of the 84'engine or accessories

 

[351C-84'Fox]

Having swapped a Lincoln Mark VII 5.0 into an 84 3.8 CFI car, I had to swap the fuel lines, you may run into this too. The 94-5 T5s had a longer input shaft which moves the shifter back about an inch compared to the earlier Fox cars. Also, I believe the oil pans are the same from 79-95, so I suspect you'd be ok there.

Ok so minimal changes from that aspect. Thanks

 

[2000xp8]

The interior swap has been done, it's a crap ton of work, you should only do it if you are truly in love with the idea.
My thoughts are that the foxbody and the sn95 interior don't really match. But that's me, i don't even like just the seats in there so...

I'd locate fox accessories and use something like a terminator X.
Blending harness's can be done, i know i've done it, but in 2024, i'd just go with a standalone.
Besides the 94/95 computer isn't so great anyway.

For the trans, the input shaft and the bellhousing can be swapped.

 

[351C-84'Fox]

I like the idea of the interior swap. Does the back seat and side panels all fit also? I may just buy the car from my bud and do it lol. The 84 interior is in good shape, but I like something different you just don't see much of. The car is a hatchback so I'm assuming the trim in the rear will stay. So even though the engine brackets and doubts are wider they will still fit in a fox right? I'm thinking if I do the interior swap also I may just replace the entire wiring harness for the car with the sn95.