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Scott Clarke Scott Clarke is offline
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Join Date: Apr 2002
Location: Eugene, Oregon
Posts: 1,115
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Jamie-
It sounds like you are saying that the '69 stacks would flow more CFM at high RPM, even though the ID at the base is the same. I guess this makes sense, and I like your theory about the CR issue. I thought that CRs were about the same between '69 and '70, but Porsche could have been (correctly) anticipating future reductions.
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'70 911E short stroke 2.5 MFI. Sold
'56 Cliff May Prefab
Old 02-09-2005, 10:41 AM
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