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Old 05-05-2004, 05:05 AM
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a1airboat a1airboat is offline
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Join Date: Jun 2003
Location: Hernando Beach, FL
Cobra Make, Engine: Superformance,351W/396 Stroker 500+HP
Posts: 50
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Default Speedometer reading slow

I have a problem with the speedometer reading about 10 to 12 mph slow on my Superformance. Car has T56 6 spd trans and Yokohama tires size P275/60R15 107T on the rear. Spdo gear in the trans has 19 tooth. Tried 18 and also 20 tooth gears and cant get it to read any better. Anyone have any idea what I can do to solve the problem ? Thanks Darrel
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