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Re: Rpm question
^ This is correct. I came up with the same number.
It is possible you have a 3.73 rear. By my calculations, if you DO have a 3.73 rear, you should be moving about 71 MPH at 3100 RPM.
As others have said, a GPS speedometer will be the best way to verify your actual speed.
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1970 C20 Custom Camper - 350, TH350
1997 GMC Suburban
1994 Acura Integra GSR
1987 Dodge Daytona Shelby Z
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