Re: AC 43LS Spark plugs

Posted by Eric Boyle On 2007/4/13 16:30:54

Kevin, you can go with R45S for short reach, with gasket, or R45XLS for long reach, with gasket. If I remember right, my '55 320 in the Pat takes the long reach, and it's the machined dome, so I'm thinking the Cast Dome heads take the short.