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mooney265 mooney265 is offline
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Join Date: Sep 2008
Location: New Orleans
Posts: 1,365
3,050 RPM is 70 MPH on mine...

When I bought this car, the previous owner[s] stated that I had a 915 ring and pinion... Don't know exactly what that meant, but my guess is it had something to do with the final gear ratio????

I'm just checking to make sure I have the same gearing as the stock 930 with 4-speed. I'm running 3,050 rpm at 70 mph. By my calculation, the theoretical top speed [at 6k rpm] would be less than 140 mph.

What say you?

Also, I make about .2 bar boost cruising at 70 mph. Is this normal?
LIVN80S - - Red '79 Porsche 930 Steel Slant Nose Conversion [in 1987] w. 46k miles 3.3L; 964 Cams; K27HF @ 1.0 BAR, with Garrettson Intercooler; Rarly Zork; CIS Flowtech Fuel Head & BL-WUR.
Old 11-11-2008, 07:07 PM
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