Bronco Axle Codes
Ok, everyone always wants to know what axle ratio they have in their diffs. This is determined easily enough. First, walk to your Bronco. Ok, now the hard part is behind you. Open your driver's door and look in the door jamb just above the door striker, see pic below:
Now look for the "AXLE" code shown below:
Now go get your owner's manual, it usually comes w/the truck and says "Owner's Manual" or similar in english on the cover. Damnit, I already hear your whining, "I lost my owner's manual. . . " Stop. Helm Publishing will be happy to sell you a new one, and even if you're an experienced gearhead the owner's manual makes good bedtime reading. It'll tell you stuff like fluid capacities, towing capacities (ever wonder exactly how much tongue weight that stock step bumper is rated at??), and all sorts of other cool stuff. So stop the whining and click
http://www.helminc.com/.
http://www.helminc.com/.
Now, here's the combined codes from '85 and '90 Bronco owner's manuals; this should cover most if not all codes out there:
REGULAR: (Regular means "open" diff in this context)
13 4.11
14 3.00
16 3.50
18 3.08
19 3.55
LIMITED SLIP:
H3 4.11
H4 3.00
H5 4.10
H6 3.50
H8 3.08
H9 3.55
If you have 3 digits on your axle code the first two digits are the rear axle code. Thus, looking at my pics above and cross-referencing the chart above my '90 came from the factory w/3.55's and Ford's sorry excuse for a limited slip differential, the Crap-Lok, er I mean Trak-Lok.
Now, to know if the front diff is open or limited slip I'm ass-uming you have to look for a tag on the diff, as there is no "front axle code" on the door jamb sticker.
Email wbr90@yahoo.com
last updated 12/20/2001
