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Author Topic:   Spark Plug Gaping
Dirt Maniac

Total posts: 182
posted April 16, 2003 08:04 AM
I just bought some BOSCH-PLATINUM spark plugs and was wondering what i should gap them at? Motor is a 350 sbc 10:1 67cc heads 93 octane stock HEI ignition. anything else you need to know just ask!

Dirt Forum Racer

Total posts: 80
posted April 16, 2003 11:44 AM
I was told once that any plug that is used with an h.e.i. they have to be at least .040 or the hei will burn the electrode out of the plug. I was told that by the local NAPA guy so take it how u want it.

Dirt Forum Champ
Total posts: 620
posted April 16, 2003 02:32 PM
.035" for racing .050" on the street.

Dirt Freak

Total posts: 352
posted April 16, 2003 05:59 PM
.045 just like allways with a HEI.


DMA Racing
Dirt Forum Racer

Total posts: 82
posted April 16, 2003 08:16 PM
i run mine at.035,another question how often do you change your plugs?

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