Re: Spark Plugs

Posted by Owen_Dyneto On 2011/9/7 8:18:49

Packard's use of short reach (3/8") plugs ended with the end of the flathead era (1954). The AutoLite website gives these choices for your 1955 Clipper:

Non-resistor: 437
Resistor, copper-core: 65
Platinum: AP65

PS - 3/4 inch reach. "Reach" is defined in my vintage AC catalog as the distance from the gasket seat to the end of the shell.