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6.9L Diesels Technical discussion of topics related to vehicles powered by the 6.9 Liter In-Direct Injection Navistar engines.

       
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Old 08-26-2008, 05:39 PM   #1 (permalink)
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Axle and Trans codes

I was just wondering if someone could help with figuring out the door tag on my 1986 F250, the trans is K and the axle is 39. What do those numbers and letter mean thanks.
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Old 08-26-2008, 06:02 PM   #2 (permalink)
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Here you go...... Automotive What is my Ford rear end ratio, do I have positraction
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Old 08-26-2008, 08:10 PM   #3 (permalink)
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K means C6 three speed automatic trans.
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Old 08-28-2008, 11:53 AM   #4 (permalink)
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The rear axle should be an open diff. 10.25 with 3.55's. That is if no one has changed these parts before you took ownership.

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