Spark Plug Gap

Spark Plug Gap

plumcrazy

Jeeper
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Location
Springville, Pa.
Vehicle(s)
'79 CJ5, '83 DJ5, '04 Silverado
I just upgraded from the old MotorCraft style ignition to a HEI distributer w/ a 50,000 volt coil . My plugs are gapped @ .35, how much of a gap can I go to now. I am guess somewhere beteween .40 and .45. Oh yea, I did use the gear off the stock distributer because of the troubles I heard of on this forum, thanks
 
Most HEI's run .045 gap.
 

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