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1967 Shelby GT350/500 / HEI Plug Gaps ?
« on: March 09, 2020, 04:47:10 PM »
Guys,
HEI conversion done and running very well..... just one question since I am getting conflicting plug gap information.
Being the stock plug gap spec is .028 to .032 for points, I have always been under the impression to add about .005 when converting to HEI...... so I gapped my new plugs at .035 during the install. A local dirt track engine builder told me that I should run them up to .040 even .045 for more spark and the Hi Po will be much happier.
What say the Fourm experience here ?
As always.... thanks for your advise.
BG
HEI conversion done and running very well..... just one question since I am getting conflicting plug gap information.
Being the stock plug gap spec is .028 to .032 for points, I have always been under the impression to add about .005 when converting to HEI...... so I gapped my new plugs at .035 during the install. A local dirt track engine builder told me that I should run them up to .040 even .045 for more spark and the Hi Po will be much happier.
What say the Fourm experience here ?
As always.... thanks for your advise.
BG