Weber Posted November 17 Share Posted November 17 Can anyone tell me the speedometer rpm ratio to the driveshaft rpm of the S30 speedometers? Corvette forums says the standard US number is 1000 rpm for 60 mph. Not sure that applies to our cars. I can back caculate the number if I have a ratio of 1:3 or 1:2 or whatever. Any help is appreciated> Thanks, Bob Quote Link to comment Share on other sites More sharing options...
Weber Posted November 18 Author Share Posted November 18 (edited) Nevermind. I measured it and it is 3:1, same as the US versions. 1000 rpm input to the speedometer = 60mph = approximately 3000 turns of the driveshaft. Edited November 18 by Weber Quote Link to comment Share on other sites More sharing options...
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