David A. Cooley wrote: > > At 07:06 PM 4/20/99 -0400, you wrote: > > >Too lazy to dig for the spark plug manual. Think the platinums are > >all 601, and 41 is heat range. > >Come to think of it, it's not in the plug manual anyway. > > Hmm.. These aren't plats... Standard $0.99 AC delco plugs. Then I need to get a manual that has the new number systems. Shannen