Are there any differences between the OHC and the OHV engine harness and ecm?
If I can sell my RX7, I am going to be getting an OHC to rebuild for school, more details on it as they occur, but the question is, do I need to get the harness and ecm with the engine, or will the existing harness work with some modification, and will the OHV ecm work at all? I cant think of much that would be different, as the timing isnt really variable and the engines dont have anything really complicated going on with em.

TL : DR
Will the OHC engine run properly on the OHV ECM and Harness?

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2000 XLT 4x4, 4dr ext cab, 4.0L OHV, 4.10 LSD
265/75/16 Goodyear Duratracs
Mountaineer seats, Expo OHC
2003 EDGE front clip conversion
133rwhp/192rwtq-->6-28-11

1969 Mercury Cougar
351W, FMX, 3:1 open diff in a Ford 9"
Undergoing restoration

completely different it will need to be swapped

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Thats what I was wondering. So full harness and ecm. Will the transmission harness and body harness still work? I would assume so since they are both 5r55e xmissions and the body hasnt really changed in over a decade.

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2000 XLT 4x4, 4dr ext cab, 4.0L OHV, 4.10 LSD
265/75/16 Goodyear Duratracs
Mountaineer seats, Expo OHC
2003 EDGE front clip conversion
133rwhp/192rwtq-->6-28-11

1969 Mercury Cougar
351W, FMX, 3:1 open diff in a Ford 9"
Undergoing restoration

that should be no problem a 4.0L OHV trans will bolt to a 4.0L SOHC, i believe there might be a dowel pin removed tho but nothing to bad

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