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1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks Discuss the Early Eighties Bullnose Ford Truck

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Old Mar 27, 2005 | 01:43 PM
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captainkirk
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Rear axle knowledge needed

I have a 1982 F150 with a 351 windsor and a 9 inch 10 bolt in the rear. I am wondering what my rear ratio is. Is there some sort of ID stamped on it? I have a C6 trans and I turn 3400 rpm@ 70 mph with stock tire size. Any input would be appreciated.
 

Last edited by captainkirk; Mar 27, 2005 at 02:08 PM. Reason: dunno
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Old Mar 27, 2005 | 05:51 PM
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When you open the drivers door you should see a white tag affixed inside the door jamb (not the door)
There you will find a section at the bottom of the tag labeled "axle"
Give us the #'s in the axle box
Steve G.
 
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Old Mar 27, 2005 | 08:41 PM
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I checked the number in the box, it's 16.
 
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Old Mar 28, 2005 | 04:45 AM
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16= 3750# capacity rear w/ 3.50 gear ratio open differential (non limited slip)
Source: 82 Ford Truck Shop Manual
Steve G.
 
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Old Mar 28, 2005 | 07:45 PM
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Much appreciated! When I was under the truck bleeding the brakes I looked for a tag on the axle, but didn't find one. You wouldn't happen to have anything in the manual on cylinder head castings, would you?

Kirk
 
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Old Mar 29, 2005 | 06:57 PM
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The factory manual does not but I have other books that will break them down.
What you might want to do is post your casting #'s on the 351W forum.
I am positive you will get feedback there!
Steve G.
 
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Old Mar 29, 2005 | 11:37 PM
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Where are the numbers located on the head? I should be able to get to them with the heads on the truck right?
 
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