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View Full Version : Alky plugs for double humps


highflyer924
08-24-2012, 04:45 PM
What is a good alky plug for double hump heads?
Motor is a 360 with cast pistons
fast_crew
08-26-2012, 03:41 PM
Autolite Racing in 32 or 33 heat range, not sure on the actual number. Or you could use NGK v power that crosses from the AR number.