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Motor is a 289 w/ 10:1 compression, World Products Windsor heads, Edlebrock RPM Performer intake, MSD 6A box, Ford Motorsports coil, Accel spiral 8mm wires and Mallory unilite distributor. It has Autolite platinum AP25 plugs w/ a .060 gap. What plugs and gap do you guys recomend?
I checked my Autolite catalogue heat range section, and it shows 23 as coldest, 26 hottest. Autolite's numbering system seems pretty incomprehensible though, for other styles of plugs the hotter plugs have lower numbers.
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