spark plugs gap

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March 30th, 2015, 01:15 PM

DYSKIE

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spark plugs gap

I have 1970 455 with holley 850dp, torker intake, msd box, msd coil and non hei distributor. I going to use NGK 5858. How much should I gap spark plugs?

March 30th, 2015, 02:03 PM

oldcutlass

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.040-.045 would probably work well.

April 1st, 2015, 07:56 AM

DYSKIE

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Quote:

Originally Posted by oldcutlass

.040-.045 would probably work well.

Thank you Eric, How if i keep them at .030 what will happen?

April 1st, 2015, 08:21 AM

oldcutlass

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The advantage with running the MSD system with a hotter coil is that you can open your gaps a bit. I doubt running a narrower gap will effect it much as long as the plug gets hot enough not to attract deposits. If you start running into issues you can always remove and re-gap.