Community Q&A Question: motorcraft spark plugs

Asking About: Mustang Screamin' Demon Ignition Coil (84-95) 5.0/5.8


motorcraft spark plugs

Do I need to open my plugs .065 for screaming d coil to work, or will it work with my plugs just the way they are from motorcraft?
from astoria |
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Accepted Answer
If it has stock heads you can leave them.
from La Mesa |
0 0

I have a stock 89 GT. I used MSD Iridium plugs with FFRP wires. I opened my plugs .050 to be on the safe side and it is running great. - Trey 3 years ago
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