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Speedo calibration

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01-04-2007, 10:03 PM	#1
LorcinLS1 Registered User Join Date: Jan 2007 Location: NewOrleans Posts: 5	Speedo calibration My speedo is off. At low speeds 40 and under its 5 mph off. when i am above 70 its 10 mph off. the truck is a t-350 3.73 gears with 275/60/15 tire. does anyone know what speedo gears should be in the tailshaft housing.

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