Re: Distributors and advance curves - how many did Packard build?

Posted by PackardV8 On 2010/6/16 22:49:16

Note that my AC book indicates a 43LS (heat range 3) for the 55 V8. Seems odd to me that such a rather cool plug would be used except under extreme heat or racing conditions.

The 45XLS (heat range 5) would be about rite for middle temerpature plug.