97 4.6 coil pack to COP conversion

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97 4.6 coil pack to COP conversion

Unread postby BirdMarkVIII » Mon Aug 06, 2018 1:01 pm

I have read a lot of info on this subject from a lot of different sources. None of the posts, articles, comments I have read explains the actual ECM and harness that best suits the swap.

I have the complete running 97 Mark VIII and the complete running 97 Thunderbird. I am installing the 4.6 4V COP Mark engine into the Thunderbird 4.6 2V twin coil pack vehicle.

The first real question is; do I rewire the Thunderbird harness with the necessary wiring to activate the 8 coils and the cam timing function of the Mark 4V engine? Then do I have the Thunderbird ECM flashed, if so to what? or do I use the Mark ECM, which will probably allow me to start the engine? The Mark ECM has several things that are not compatible with the TBird vehicle. The trans shift points 5 speed for bird 4 speed for Mark and I believe the converter lock function is not compatible. There are several more, but getting the correct ECM, flash, for full engine functionality is my first concern, then trans, etc.

Thank you for any help with this project.
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Vehicle Information: Swap 97 Mark VIII 4v into 97 Thunderbird 4.6 2V

Re: 97 4.6 coil pack to COP conversion

Unread postby decipha » Mon Aug 06, 2018 4:54 pm

its a very easy swap you have two options

you can keep what you have and just run the coil on plug in wasted spark with the cdan4 - tbird ecu. Thats what a lot of the early cobra guys do to get rid of the coil packs and clean up the engine bay. Would be the easiest.

Or swap the ecu harness for the mark viii harness and ecu

either one will do fine and wont be any problem

there is no cam timing the 4v have no phasers
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Re: 97 4.6 coil pack to COP conversion

Unread postby BirdMarkVIII » Tue Aug 14, 2018 12:35 pm

Thank you. I think it is the old problem of not seeing the forest for the trees.

Do you know where I can find a wiring schematic for the lost spark COP wiring? I understand the principal, two plugs fired at the same time, one before TDC the other before BDC.
BirdMarkVIII
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Posts: 3
Joined: Mon Aug 06, 2018 12:00 pm
Name: Ray
Vehicle Information: Swap 97 Mark VIII 4v into 97 Thunderbird 4.6 2V

Re: 97 4.6 coil pack to COP conversion

Unread postby decipha » Tue Aug 14, 2018 3:29 pm

go to tccoa and search cop conversion or cop swap
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decipha
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Posts: 15520
Joined: Mon Jul 15, 2013 5:29 pm
Location: New Orleans, LA
Name: Michael Ponthieux
Vehicle Information: Supercoupin' x10
90 (4x 5spds) - Dante, Ruby, Daja, Ava
91 4r70w - Skarlett
92 (2x) 5spd & auto - Bianqa, Andrea
93 auto - Danika
94 5spd Rionda
95 auto Aisha
Vehicle 2 Information: Others:
00 Lincoln LS - Luanda
98 Camaro SS - Bounquisha
02 Harley F-150 - Sasasha
03 Marauder - DyShyKy
00 Explorer 5L - Bernyce

Re: 97 4.6 coil pack to COP conversion

Unread postby BirdMarkVIII » Fri Aug 17, 2018 1:37 pm

I'm going to use the lost spark harness. No one will know the difference any way. However, for future reference, if I add the 8 coil wires to the Thunderbird harness, probably 8 currently unused pins, can the PCM be programmed?
BirdMarkVIII
General Poster
 
Posts: 3
Joined: Mon Aug 06, 2018 12:00 pm
Name: Ray
Vehicle Information: Swap 97 Mark VIII 4v into 97 Thunderbird 4.6 2V

Re: 97 4.6 coil pack to COP conversion

Unread postby decipha » Fri Aug 17, 2018 5:30 pm

the cdan4 ecu only has 4 coil outputs so youd have to swap to one with 8 outputs
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decipha
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Posts: 15520
Joined: Mon Jul 15, 2013 5:29 pm
Location: New Orleans, LA
Name: Michael Ponthieux
Vehicle Information: Supercoupin' x10
90 (4x 5spds) - Dante, Ruby, Daja, Ava
91 4r70w - Skarlett
92 (2x) 5spd & auto - Bianqa, Andrea
93 auto - Danika
94 5spd Rionda
95 auto Aisha
Vehicle 2 Information: Others:
00 Lincoln LS - Luanda
98 Camaro SS - Bounquisha
02 Harley F-150 - Sasasha
03 Marauder - DyShyKy
00 Explorer 5L - Bernyce


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