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

Ford axle decode

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Old Sep 20, 2004 | 06:47 PM
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fordtruckenthusiast's Avatar
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Ford axle decode

I recently purchased a junked '81 f250 4x4 standard cab with a 4.9 I6. I'm almost a 100% sure that I'm reading the door tag right, it says "37" for the axle code. I haven't been able to find anything that lists a 37 as anything. I need an assist for this one. Thanks in advance.
 
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Old Sep 20, 2004 | 07:10 PM
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From: Coutts Canada
yeah I'm in the same boat only i have an E-350 bus with a 460 and a C6 with an axle code of 33, and i haven't been able to find anything. However if it was a limited slip (a letter in the code such as H or a D) a rule of thumb i discovered is if it has a 9 following he letter then it has 3.54 gears and if it has a 5 then it has 4.10s
 
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Old Sep 21, 2004 | 05:56 AM
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From: Dryden, ON, Canada
Don't have a listing here for 37, but, 33(van specific axle code) is a Dana axle of 6540# capacity with 3.54 gears.
 
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Old Sep 21, 2004 | 06:28 AM
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From: GANS
Originally Posted by fordtruckenthusiast
I recently purchased a junked '81 f250 4x4 standard cab with a 4.9 I6. I'm almost a 100% sure that I'm reading the door tag right, it says "37" for the axle code. I haven't been able to find anything that lists a 37 as anything. I need an assist for this one. Thanks in advance.
best thing is to buy something from the ford parts, then tell the guy to look up the code
 
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Old Sep 21, 2004 | 03:21 PM
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Thanks, it seemed when i drove the van it seemd like 3.30's, but maybe thats because the motor is dogged out.
 
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Old Oct 12, 2004 | 12:27 PM
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From: Mustang, Oklahoma
Good afternoon:

You have the same axle code I have on my '80 F-250. It is a 3.54, 5300lb Dana axle. I located a pretty good VIN decoder at the following link:

http://4wheeldrive.about.com/gi/dyna...rm%2Fbronco%2F

Select Ford VIN decoder (left side of screen)

David
 
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