champion J10Y or P-3-3P mopar plug gap too .035 > From: Layne G <64Polara500@xxxxxxxxx> > Subject: Spark plug question > To: "1962to1965mopars@xxxxxxxxxx" <1962to1965mopars@xxxxxxxxxx> > Cc: "1962to1965mopars@xxxxxxxxxx" <1962to1965mopars@xxxxxxxxxx> > Date: Friday, October 9, 2009, 10:05 PM > I was wondering what the proper plug > would be for a 413 with aluminum heads and 2-600 cfm > Edelbrock carbs. This is bored out and will be higher > performace... Up to 475 horse. Any help would be > greatly appreciated. > > Thanks a ton in advance! > Layne G > 64 Polara 500 > > >