Hey wassup everybody quick question. I have a 1985 mustang gt 5.0H.O carbed... I threw some gt40 3bar heads on it with a trickflow stage 1 cam not sure what spark plug gap to use .44 or .54. Not sure what year they're from they dont have thermactor ports so I'm assuming 97 explorer or mountaineer the casting number is F3ZE-AA and I'm using motocraft sp-413 plugs
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