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84 F-250 axle code

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Old Jul 25, 2005 | 04:31 PM
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Smile 84 F-250 axle code

Does anyone know what a C3 axle code means on an 84 F-250 ?Thanks
 
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Old Jul 25, 2005 | 04:49 PM
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From: GANS
Originally Posted by bill530_2
Does anyone know what a C3 axle code means on an 84 F-250 ?Thanks
should be a posi 3.54 geared Dana 61.
 
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Old Jul 27, 2005 | 03:12 AM
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Thanks

Thanks for the info Bremen 242,I could not see any markings on the rear axle to ID it.
 
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Old Jul 27, 2005 | 04:28 PM
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If it has 10 bolts and a fill plug is it definatly a dana. Most of the 3.54 geared axles seemed to be Dana 61s.. Easy way to check is- measure the axle tubes- a 61 or 70 will have 3.5" tubes and the 60s have 3.25" tubes. If it has 3.5" tubes, pull the axle- if it is a 30 spline, its a 61, 35 spline is a 70.
 
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