5.4L 4V Spark Plug Change Step-By-Step Instructions - Shelby GT500 Modifications and Tech. - Team Shelby

Doug Austin stashed this in Doug's Stash

Source: http://www.teamshelby.com/forums/index.p...

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Doug Austin
5:20 PM Aug 22 2013

For when your spark dims...

<p>For when your spark dims...</p>

Doug Austin
5:20 PM Aug 22 2013