Posted by Bruce(OR) on September 11, 2013 at 06:23:32 from (97.115.28.9):
In Reply to: spark plug gap posted by Z-man on September 10, 2013 at 20:09:31:
If your running the original 6V ign, run the gap at .025 If you stepped up to a 12V system you could run them out to .045 GM tried running the gap out to .060 in the 80's on a normal ignition system and ran into problems with misfires and premamture ign componenets failure. They later came out and dropped the max gap to .045 in all distributor ignition vehicles. The Distributorless ignition cars are still running up to the .060 plug gap. Generally the wider gap will get you a tad bit hotter spark and a better burn. Hotter spark should increase your power, reduce fouling and get a smoother running engine.
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