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proper spark plug gap for hei?

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Old

04-10-2013, 10:58 PM

#1

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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?

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04-10-2013, 11:09 PM

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Car: 1967 Camaro, 91 z28

Engine: Lb9

Transmission: M20

Axle/Gears: J65 pbr on stock posi 10bolt

Re: proper spark plug gap for hei?

.035 to .045

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Old

04-10-2013, 11:22 PM

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Car: 1986 camaro Sports Coupe

Engine: L31 350

Transmission: 89 700R4

Axle/Gears: 3.42 gov lock

Re: proper spark plug gap for hei?

What determines where it gets set

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04-10-2013, 11:25 PM

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Tuned Performance

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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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350, 96, body, carb, carburated, factory, gap, head, hei, l31, plug, spark, stock, vortec, vortech

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