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Registered
Join Date: Apr 2002
Location: Houston (Clearlake), TX
Posts: 11,316
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I would recommend replacing the ring and pinion with 8:39 gears so you keep good gear spacing. This puts the four gears close to the first four gears in the G50/50 '89 930 5-speed transmission with a top speed of about 166mph at 6800rpm in fourth.
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2014 Cayman S (track rat w/GT4 suspension)
1979 930 (475 rwhp at 0.95 bar)
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