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1961 - 1966 F-100 & Larger F-Series Trucks Discuss the Slick Sixties Ford Truck

rear end ratio

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Old Aug 25, 2006 | 03:25 PM
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Flyn66dtmn's Avatar
Flyn66dtmn
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From: Montana
rear end ratio

I read a thread about two years ago on how to figure out what the gear ratio is on these trucks if the tag is missing. I even wrote it down . it's in a safe place LOL. if any of you guru's know how to do it without taking it apart I would apreciate it. i have no idea how fast it goes as the speedometer disappears out of sight. montana freeways are fun if you like to drive fast occasionally. thanks.
 
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Old Aug 25, 2006 | 03:35 PM
  #2  
jowilker's Avatar
jowilker
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From: Creedmoor, North Carolina
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Flyn, My preferred method is to roll the truck one tire revelorion on a level serface and count the revolutions of the driveshaft. That method is how the truck uses it and it applies.

John
 
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