proper spark plug gap for hei?
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Joined: Aug 2009
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From: Elwood, IN
Car: 1986 camaro Sports Coupe
Engine: L31 350
Transmission: 89 700R4
Axle/Gears: 3.42 gov lock
proper spark plug gap for hei?
What's the proper gap for plugs in a 96 l31 350 with stock vortec heads, gm hei, and a carb? Right now I have them set to the factory block setting of .60, but I've been seeing that .45 is enough for hei. Help? Opinions? Is .60 too much or just right?
Joined: Dec 2004
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From: Mile High Country !!!
Car: 1967 Camaro, 91 z28
Engine: Lb9
Transmission: M20
Axle/Gears: J65 pbr on stock posi 10bolt
Re: proper spark plug gap for hei?
A stock hei puts out up to 45kv , there is no need to run a larger gap and over work the coil. This is not a real high compression engine. Run .035 and you will be fine.
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