Re: Spark Plugs

Posted by Owen_Dyneto On 2011/9/8 14:26:57
I've always found this chart from the 1962 AC catalog to be useful, perhaps some of you will want to print it off and save it. Many of the actual plug numbers are no longer valid, though most of the 10mm plug numbers (like M-8) are still current.

For current AutoLite plug numbers I've never been mislead by using the AutoLite website. Its data for Packard goes back to 1899. Select "spark plugs", then "passenger car", and then enter year, make, model and/or engine for a current recommendation. I've used this data regularly and have always found the recommendations to be spot-on.http://www.autolitecatalog.com/Application.aspx?b=A

If you request for a 1955 Clipper, you'll find recommendations for both the 7/16 and 3/4 reach plugs.

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