Quote:
Originally Posted by 78F350
The chart is about the mechanical linkage, not engine power. Shaft from the engine inputs rpm1 to the transmission, transmission outputs to driveshaft at rpm2, wheel circumference rotates over asphalt at a rate of 'distance' per 'time'. Find a long down hill slope and it should work.
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The chart in the back of my 2.5 owners manual has a little different chart. This chart reflects what I see when i'm driving the car. 6,500 RPM's in 3rd gear = 86 MPH GPS verified or 89 mph on the speedo.
1998 Porsche 986
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