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911nut 911nut is offline
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Join Date: May 2001
Location: Michigan
Posts: 2,511
Keith, if possible lay out the 930 cam angle vs. lift over the SC chart you have there. You will see that the SC intake valve is open longer than the 930 intake valve. That's where the increase comes from.
A valve that's lifting higher has to open sooner and close later. Think mass flow vs effective diameters.
Better yet, Google cams. There's lots of stuff to read about.
Paul B.
'91 964 Turbo
Port matched, SC cams, K27/K29 turbo, Roush Performance custom headers w/Tial MV-S dual wastegates, Rarlyl8 muffler, LWFW, GT2 clutch & PP, BL wur, factory RS shifter, RS mounts, FVD timing mod, Big Reds, - 210 lb
Old 02-01-2010, 03:17 PM
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