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1948 - 1956 F1, F100 & Larger F-Series Trucks Discuss the Fat Fendered and Classic Ford Trucks

Speedo Gear

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Old Aug 16, 2018 | 12:44 PM
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Aaron81
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Speedo Gear

I pulled my T87D (Heavy Duty trans) from a parcel delivery chassis. The rear end was in the 4-5+ ratio range I am sure.

I have a 3.92 ratio rear end. What color and tooth count driven gear should I have so my speedometer works accurately?

Thanks in advance!
Aaron
 
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Old Aug 17, 2018 | 07:50 AM
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Old Aug 17, 2018 | 07:54 AM
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Sure would help me calculate it out Thanks.
 
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