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I have a 67 F-100 and am looking to find a lower numeric ratio differential. The upullit where I am a regular has a sale this weekend on diffs for $20.
As it happens , all the truck are picked over and the Econoline vans are left.
None of the diff have their tags!. They may have been removed by someone who was looking (?!).
Anyway- I basically have found vans with these door sticker axle codes:
Anyone know what these 13 and 16 9" axles are for these years. I sure as heck can't find any decoding info on this or any site. I have a Clymer's manual for Ford vans for that year and it doesn't even mention the diff , let alone talk about the codes or ratios.
I can't help you with the codes but you could try posting in the Clutch,Transmission, Differential, Axle and Transfer Case forum which is a ways further down on the main forum page.
Be sure to measure the length of the rear end you are considering purchasing and compare it to the one you have in your truck.
I can't say for sure if they are different lengths but I do know that in the later models the vans chassis is wider than the F series. They may use the same width axles with perchs welded on in a different location.
That's not a consideration- I just need the center section (to fit 28 spline axles). I eventually found my answer on another post. The 13 code for those years was 2.75 and the 16 was 3.75- which is what I have. I think 2.75 is going to be too radical so I'll look around for a 3.25. This place has rear ends on sale every month or so so I'll get one (for $20!) eventually
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