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Thread: how to tell the differance from a 351M&400M
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Old 09-11-2012, 09:09 AM
Blksmith51 Blksmith51 is offline
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how to tell the differance from a 351M&400M
I have an M class engine and was wondering how to tell what I have? 351M or 400M? Is there a casting number on the outside that would be differant from each engine?
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