86 2.3 4 speed to 85 302 /68 C4 transmission swap

[351wswapednotch]

So what i got
93 vert mounts
Hei distributor
Eddlebrock rpm air gap
86 oil pan
650cfm holley
1985 F150 302
A rebuilt 1968 C4 from a 302 mustang
My questions are
What to keep and what to pitch form the 2.3 notch like can i reuse the 2.3 harness
What transmission crossmemer do i use
Can i reuse the AOD flex plate
Is there anything i am missing

[dagenham]

Iirc the balance between the 85 engine and 68 C4 tranny is different. You wiil have to change the harmonic balancer and flex plate.
I dont know if the wires from the 2.3 harness for sending units i.e. Oil pressure and temperature sending unit will be long enough to reach the V-8 sending units.

[mustangxtreme]

What to keep and what to pitch form the 2.3 notch like can i reuse the 2.3 harness

The harness can be made to work by lengthening, shortening or repositioning wires.

What transmission crossmemer do i use

I would look for a dual hump crossmember so you can run dual exhaust.

Can i reuse the AOD flex plate

Probably not. It depends on the bellhousing on the C4. 68 Mustangs used a 157 tooth flexplate where AODs use a 164 tooth flexplate. Either way since your engine is an 85 it will have a 50oz imbalance and the flexplate needs to match that balance.

The throttle cable may not work, you may need a larger capacity radiator along with all the radiator hoses. You will also have to figure out the fuel system.

[351wswapednotch]

The harness can be made to work by lengthening, shortening or repositioning wires.

I would look for a dual hump crossmember so you can run dual exhaust.

Probably not. It depends on the bellhousing on the C4. 68 Mustangs used a 157 tooth flexplate where AODs use a 164 tooth flexplate. Either way since your engine is an 85 it will have a 50oz imbalance and the flexplate needs to match that balance.

The throttle cable may not work, you may need a larger capacity radiator along with all the radiator hoses. You will also have to figure out the fuel system.

Would this flex plate work ?
shop.advanceautoparts.com/p/atp-automatic-transmission-flex-plate-z-157/3922510-p?c3ch=PLA&c3nid=3922510-P&adtype=pla_with_promotion&gclid=Cj0KCQjw2pXXBRD5 ARIsAIYoEbcREwkd3AfitOOjji2LuTvHript61mayHBCzZGTHo dk7C9xJ-F0h3gaAl6iEALw_wcB&gclsrc=aw.ds

[mustangxtreme]

That is a 164 tooth flexplate. If the bellhousing has not been changed on your C4 you will need a 157 tooth 50oz balanced flexplate.

[351wswapednotch]

That is a 164 tooth flexplate. If the bellhousing has not been changed on your C4 you will need a 157 tooth 50oz balanced flexplate.

Ah gotcha can do

[351wswapednotch]

[INDENT]I would look for a dual hump crossmember so you can run dual exhaust

Do you use the AOD crossmember

[mustangxtreme]

If you buy a new one I don't think the mount tubes are welded yet so you can move it where you need and then weld the tubes. Since I put an AOD in mine yes I used an AOD crossmember.

[351wswapednotch]

If you buy a new one I don't think the mount tubes are welded yet so you can move it where you need and then weld the tubes. Since I put an AOD in mine yes I used an AOD crossmember.

Ya im going to the salvage yard to pick up the cross memer

[mustangxtreme]

You can always cut the welds off the tubes and readjust the crossmember's location.