Re: V8 spark plug fitment?

Posted by PackardV8 On 2016/8/13 16:55:44

AC 45 XLS. Might be ble to use 44XLS. DO NOT use anything 43 or lower in AC plugs unless u live in the Mojave desert or high speed racing.

The 45XLS is a 3/4" thread, for 56 V8's. 55 used a 7/16" thread. (someone double chek me on that).

I'm running 45XLS in my 56 Executive for ovver 15K miles and 7 yearss now.

If u come back and say u have to have Champions or NGK or somekind of a high tek platinum cooated plug then all i can say is
"ok guy".