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Old 05-28-2012, 07:24 PM
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Bannon Bannon is offline
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Join Date: Feb 2000
Location: Montpelier, VA
Cobra Make, Engine: Former Owner of both Superformance #2666 Roush 427IR and Superformance #1601 Ford Crate 460CI - 486 HP 510 ft\lbs TQ
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OK Now I am pretty confused. Put the Speedo 16 tooth gear in and per the calculations, It is very close. Now I am only off by about 5-7%. If they made a 15 tooth gear then it would probably be right. But I am pretty sure it should work with a 21 tooth gear. So I am guessing I need a new speedo or maybe can get this one calibrated. Strange thing is that this car only had 1375 miles on it when I got it and the previous owner told me he had recently replaced the speedo because it stopped working altogether. And he thought it was accurate after he had it replaced. Anyone had any experience with Nissonger? I hear they are good at calibrating Smiths gauges. Would it be cheaper to send it to them or just buy a new one. (with the correct ODO reading of course.)

JB
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