justinzturbo Posted February 26, 2010 Share Posted February 26, 2010 on my f54 block i was reading the stampings on the tops of the pistons and i noticed they're all the same except #1. they all say "p90" and "34" except for the first one which has a 45 on it...like my n42 block. is it possible i have one NA piston in my turbo block? or are the numbers non-sense? Quote Link to comment Share on other sites More sharing options...
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