My old roommate actually spun a bearing and didn't have rod knock...but the piston was hitting the head. The "IN" stamp on the piston was pressed into the bottom of the head. We thought it was rod knock until we pulled it apart. o:
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2015 Ford Mustang GT Fastback - Ingot Silver - 6M - Performance Package - Gibson Catback, JLT CAI, FR 47lb injectors, BAMA E85 tune, Eibach Sportline, BMR wheel hop kit, UPR oil separator, Steeda shifter bushing/bracket
Team B.O.B.® - Ballaz on a Budget