Will,
Use the 3923s anyway. If you are running a stock ignition system, gap the
plugs at .040. Never trust a plug gap right out of the box. If the box has
been dropped and it lands on the tip it will close up anywhere from .010 to
completely touching. I just bought a set and they ranged from .030 to .045
due to miss handling in shipment or what ever. Of the 8 plugs, 5 were at .040
but 3 were off.
SEMI-HEMI-01
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