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spark plug gap

TerryH

By TerryH
in Pontiac General Discussion/Questions

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TerryH Collaborator

TerryH

Posted
Posted

Hey guys now that I have the dist issue's more or less solved just wondering with the hei what would be a decent plug gap?As of now I an running around .035 and wondering if it should be more with the hei.

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Frosty Grand Master

Frosty

Posted
Posted (edited)

The standard gap for a Pontiac 400 with an HEI distributor is .045. Running .035 is fine for a points and condenser distributor but not an HEI.

Some guys that run Mallory distributors combined with a Mallory ignition boxes will run as high as .060.

I'd start with .045 and go from there.

Edited by Frosty
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