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Old 10-20-2021, 12:55 PM   #4
Jim Brierley
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Join Date: Jun 2010
Location: Temecula, CA
Posts: 4,088
Default Re: Model A speedometer to 40 torque tube

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I run such a combo but only had to connect my A's speedo cable to the stock '46 torque tube. There were two different cables for the A, different on the torque tube end. The gear in the turtle needs to match the rear end ratio, most are 3.78:1, on A's and V8's.
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