RE: [Chevelle-list] Spark plugs

[Tigergutt]

I think its about getting the most out of an average ignition system, e.g. a gap of 0,45 is better than 0,3 but only if your ignition is powerful enough to handle it.   Those MSD 7’s will ignite a bucket of water if you spit in it after a hard night in town with your buddies, even with a one inch gap... this is only slightly exaggerated... it depends on the night, though :-)   Full Revs!!! :o) Andr�   -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Bill Lessenberry Sent: 26. februar 2004 21:04 To: The Chevelle Mailing List Subject: Re: [Chevelle-list] Spark plugs   Hey,I gap my plugs @ .060 w/ my HEI in my 70 big block   I tested my Nova drag car once to see if increasing the plug gap really added more HP.  The car had a MSD 7 ignition system.  I gapped the plugs at .035, .045,.060, and .075.  I didn't see a difference in the ETs, so I don't think it helps.  What large gaps can do is to create a miss when the ignition system is over taxed and can't fire the big gap.  I see no reason to go over .045" .  Just my $.02 BL