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I am a 63 year old first time builder (52 Ford PU) so knowledge doesn't correlate with age. I have what I was told to be a 9" Ford rear end out of a car, the chunk comes out the front the back is solid it has one dimple on the drivers side. Can any one tell me any thing about the car it came from and how I can tell the gear ratio. Thanks O.B.
 

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Welcome to the site :)

The ford rear end has a few variations and can be narrowed down by some easily seen features, Here is a webpage with alot of identifying info.
http://www.kevinstang.com/Ninecase.htm

Here is a webpage that is listed in the knowledge base here with some axle lengths and other info that might help.
http://dfwmotorsport.com/Fairlane/9inchrearends.htm

If the tag is still on the rear end the ratio will be printed on it. If not you can jack up the car and count the number of driveshaft turns required to make BOTH wheels make 1 revolution. This will be your ratio. (Example, 3 1/2 driveshaft turns= 3.50:1)

Also the hub to hub width and wheel bolt circle can tell you alot. 4 1/2" bolt circle means it came from a mid size ford or mercury while a 5 on 5" bolt pattern means it comes out of a full size car like a station wagon or lincoln. Those are usually too wide for those old pickups but you never know what someone put there.

Brake type and size can narrow it down further.

Hope this helps,
Mikey
 
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