A/C Delco Rapidfire Plugs in stock motor? - Team Camaro Tech
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post #1 of 5 (permalink) Old Jan 19th, 01, 06:06 AM Thread Starter
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Location: Rowlett, TX USA
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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.
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post #2 of 5 (permalink) Old Jan 19th, 01, 07:11 AM
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Its not overkill, but its not the cause of your backfire either.

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post #3 of 5 (permalink) Old Jan 19th, 01, 05:13 PM
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I've heard horror stories about splitfire or rapidfire plugs melting pistons. Any truth to this?
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post #4 of 5 (permalink) Old Jan 20th, 01, 09:32 AM
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No - piston crowns melt due to lean mixtures at full throttle. The worst thing the fancy plugs do is to drain your wallet unnecessarily.

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post #5 of 5 (permalink) Old Jan 20th, 01, 12:02 PM
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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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