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Old 04-17-2013, 06:56 AM
michel schryer michel schryer is offline
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Join Date: Jun 2007
Location: Georgetown,Ontario, ont
Cobra Make, Engine: D&D Cobra,302 stock for now,IRS
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Default GT40 heads spark plug thread size ??

Anybody know the size of the threads, I want to clean the holes with a tap and I don't have it and don't know the size of the threads, can you help me on that please anybody. I did some work on the heads and there some crap in the threads,thanks a lot !

Michel
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