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Username Post: A education on Spark Plugs
C10 Sleeper 
Valued Contributor
Posts: 3426
C10 Sleeper
Loc: Redding Ca
Reg: 03-17-09
02-23-12 06:31 PM - Post#2194412    
    In response to technitom

I gap mine at .040 with a HEI. I think the specs say .045.

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