I posted the original topic earlier this week about my car backfiring. Though the car is in need of a tune-up, several friends have recommended the A/C Rapidfire plug. Is this overkill for a stock 350/300HP motor? I have a '69 Z11.
i put a set in my new 350 motor, they did as advertised, starting is better. and they run clean too. the other good thing is that they will work with a hot ign setup like a MSD and so on the split fire's will melt from a hot ign. that is my .02. oh i just swaped out the break in plug's for the rapid fire plug's.
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