axle code question
Ford Parts Specialist
Joined: Nov 2006
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From: Simi Valley, CA
Originally Posted by Driscol
F250 4x4 with an axle code of B4J and another F250 4X4 with an axle code of 37R? Whats the better axles and is it worth a swap. Any idea of the gear ratio on the 37R? Thanks
Front axle code J = Power Steering
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37 = Dana 60 / 3.54-1 / Non Limited Slip / 5300 lb. Rear Axle Capacity
The R front axle code relates to what 4WD front axle type was used. There are two different front axles, depends on the year model the axle was used on.
Last edited by NumberDummy; Oct 22, 2007 at 05:13 AM.
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HI Dennis. I found a few links to punch in codes. According to that and a few other members in a different thread the front is the optional 4500lb PS. In all fairness to you though they had the option of seeing the entire VIN. Does that mean it's just beefier? Is it a recommended swap for a Dana 3500 lb standard with 410s? If it's more trouble than it's worth I'll just list it in the parts forum. Thanks
Last edited by Driscol; Oct 22, 2007 at 01:52 PM.
Ford Parts Specialist
Joined: Nov 2006
Posts: 88,826
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From: Simi Valley, CA
Originally Posted by Driscol
That fits Bill. This R is out of a 78 F250. Is it still a Dana?
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sorry biut that .. My 3 instead of a 4 was a typo.
I didn't see the mistake until now
got to this page and scroll down to just about the bottom to see what decodes to what.
http://www.clubfte.com/users/mil1ion...ruckCodes.html
I didn't see the mistake until now
got to this page and scroll down to just about the bottom to see what decodes to what.
http://www.clubfte.com/users/mil1ion...ruckCodes.html
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Ford Parts Specialist
Joined: Nov 2006
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From: Simi Valley, CA
Originally Posted by gscottc
O.k. thanks! So it's a DANA 61 3.07. Apologies for my ignorance but isn't a gear ratio of 3.07 relatively high, and thus better suited for highway fuel economy than towing?
Towing: Uh..it can do that too, but you'd better hope that GREEN light is a long one.
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Joined: Nov 2004
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Can we dig a little deeper into the "so what"? Given the high gears (75' 2wd F-250 390 4v C6) and that having the C6 rebuilt is next on the to-do list (and much more likely than changing rear diffs in the near term) and that I do need to do some towing (primarily freeway), is there any modification I should have done to the C6 to improve the towing characteristics of this otherwise fine truck?