Spark plug gap for 15psi??? - Ford Mustang Forums : Corral.net Mustang Forum
 
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post #1 of 4 Old 03-19-2003, 12:49 AM Thread Starter
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Question Spark plug gap for 15psi???

I've been reading and seen alot of people running the autolite 3923's which are two steps cooler. Would this be better for a turbo application or just one range cooler? Also what should I gap them at. Seems to me most blown cars are running at .035. Is this a good number to start with? Thanks for any help. -Jeff


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post #2 of 4 Old 03-19-2003, 01:12 AM
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I use Autolite 3923's in my trick flow heads but I don't run 15psi. None-the-less, they did make 530rwhp on pump gas so they must work pretty well. I have mine gapped at .035. good luck

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post #3 of 4 Old 03-19-2003, 01:45 AM Thread Starter
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Thanks.

Jeff
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04 VRSCB- Air ride, PM wheel, PCIII, Rineharts and much more!!
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post #4 of 4 Old 03-19-2003, 09:06 AM
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I run NGK's that are 2 ranges colder. I gap them from .032-.035 and run anywhere from 10-14psi. I don't have an MSD box though just an accell coil. I think if you have a MSD 6al box you can gasp them a little wider.



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