1973 - 1979 F-100 & Larger F-Series Trucks Discuss the Dentsides Ford Truck

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gear ratio

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Old

Apr 28, 2004 | 04:23 AM

#16

Ray71

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Joined: Apr 2004

Posts: 81

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From: Victoria,Australia

I have a 76 F100 with a 9" that i thought had 3.50 but with a little help from a wire brush i found the tag and i has 4.10 on it, so to double check i jacked up one wheel turned it around twice and the tail shaft did four full turns, I also have a 79 F100 with 9'' buy jacking up one wheel and turning it around twice found that it has 3.00 in it.

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Old

May 9, 2004 | 12:20 AM

#17

Jeffeasttexas

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Joined: May 2004

Posts: 1

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rear end i.d

can anyone help me i.d my rear end?8"or9"? i have the tag,it reads as such wdm-u 3.70 8cc 302. any help would be good as im looking to replace gear ratio due to motor & trans. swap,to much gear.

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Old

May 9, 2004 | 04:07 AM

#18

Torque1st

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Joined: Sep 2001

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What year and model of truck is it?

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