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Pumpman · 11-20-2013

Yes, I am new to the forum and just purchased this car in October. In 1991 I didn't have $60K laying around for this Vette I always wanted.
The tires are indeed 17" as far as the gear ratio is concerned I considered that as a possibility but don't want to tear out the rear end to count teeth. I checked the speedometer at 40 MPH mine read 50 MPH also at 50 MPH my speedometer read 60 MPH those were the two points (common in city posted speeds). As far as any ratio I cant say. Short of a gear change I am curios if there is an electronic correction that can be made.
I also own a 73 C3 but put a Doug-Nash 4+3 in it many years ago. That was an easy fix as the speedometer was cable driven and my local shop built me an inline gear box to correct.
Appreciate any help.
I went to a local speed shop with this speedometer question and the owner dissed the car said it was junk as one needs to buy a spare for parts. He also said rear ends gear sets are unavailable for these cars.
Really disappointing for a guy pumped up about his new ride.
Aside from the speedometer issue I have some light oil residue on the underside and around the bottom of the engine I need locate the source of and correct.
I have never enjoyed driving any car as much as this one. My 73 is a handfull in compasison.

11-20-2013	#5
Pumpman Join Date: Nov 2013 Location: Cape Coral, FL Posts: 20	Re: Speedometer calibration Yes, I am new to the forum and just purchased this car in October. In 1991 I didn't have $60K laying around for this Vette I always wanted. The tires are indeed 17" as far as the gear ratio is concerned I considered that as a possibility but don't want to tear out the rear end to count teeth. I checked the speedometer at 40 MPH mine read 50 MPH also at 50 MPH my speedometer read 60 MPH those were the two points (common in city posted speeds). As far as any ratio I cant say. Short of a gear change I am curios if there is an electronic correction that can be made. I also own a 73 C3 but put a Doug-Nash 4+3 in it many years ago. That was an easy fix as the speedometer was cable driven and my local shop built me an inline gear box to correct. Appreciate any help. I went to a local speed shop with this speedometer question and the owner dissed the car said it was junk as one needs to buy a spare for parts. He also said rear ends gear sets are unavailable for these cars. Really disappointing for a guy pumped up about his new ride. Aside from the speedometer issue I have some light oil residue on the underside and around the bottom of the engine I need locate the source of and correct. I have never enjoyed driving any car as much as this one. My 73 is a handfull in compasison.