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JoeMag's Avatar
 
Join Date: Jul 2005
Location: Cleveland, OH
Posts: 1,367
M64/70? ...993 cup case

Hey Guys -- What's your thoughts on the below? Looks like someone got a little careless at the factory on numbering case. I believe 2nd number from far right is 7 (over stamped on a zero).




Old 11-17-2020, 08:57 AM
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Are the cylinder spigots machined for O rings, if not it’s not a cup case.
Old 11-18-2020, 10:58 AM
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...yep, has cyl O-rings and the o-ring groove at case parting line for through bolts.

about a dozen years ago i purchased a U-haul full of a partial car and parts from a stuart of synergy racing. Had lots of factory race bits -- 993 rsr heads, 964 rsr rods, 993 rsr p/c, this case, rsr headers, etc.

Did some checking back then and was think'n 993 or 964 rsr case, and did not even think to see what cup case numbers were.

Old 11-18-2020, 11:25 AM
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