can you use a cfi/sfi fender mount coil on an 85 carbed duraspark box?

[Steve85TTopConv]

Car is an 85 with duraspark. i know the pigtails are different, but i have like 3 fender mount coils from my other 85-86's, can this be used, does the ballast resistor come into play with this?

[gdniel]

There were 2 cars at the NMRA show area that had efi coils with a carb set-up.

[Steve85TTopConv]

I would rather use the round one that mounts on the engine as it will free up engine bay space, was just wondering if it will work.

[HACKGT350]

the e coil puts out a stronger spark i would use it if you can figure out how to wire it up

[Steve85TTopConv]

same wiring to both:

red/green = key on power

green/yellow = tach (-) signal

i just dont want to hurt anything, because i know the 4v/duraspark cars used a ballast resistor to drop the voltage to 10 volts on the green/red wire at the coil...will this have any effect?

[85_SS_302_Coupe]

I'm running a stock replacement EFI coil with mine right now, but i'm not using a Duraspark. It runs like a champ.

[306gt]

I've run the EFI coil with my complete MSD Ignition system. Been fine for 11 years now.

[Steve85TTopConv]

But again, should you use an efi coil with duraspark box?- thats what i was asking, as i cant really buy an aftermarket ign system yet, just dont wanna mismatch things.

[roughbutfun]

3 cars i put together are all running Duraspark w/ EFI coils.
ones been running for 6 yrs now. nothing fried. the ballast
resistor only comes in on the start position anyway. it gets
bypassed in the run position.

[Steve85TTopConv]

Thanks...all i needed to know.