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1990 B2 diff. compatability?

Four0Sport

Jack Pewe
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West Virginia
Year, Model & Trim Level
1993 2dr
My sister retired her bronco II, cracked head and bottom end knock, and while im sitting here trying to figure out the cheapest way to get 3.73s for my explorer i walk down and look at the tag on the bronco's driver door and find code 44 for axle, 3.73 gear ratio. Now i know most bronco II's were dana 28, right? how do i find out if this vehicle is a dana 35? also, the rear diff is a 10 bolt, making it a 8.8"? sorry for all the newbie questions, im just now getting into differentials and transfer cases.
 



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410Fortune

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B2 "Slightly" Modified
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1990 MIGHT have a 28 spline 8.8, its not a 31 spline

1990 MIGHT have a HYBRID dana 28/35 TTB axle, but not a true D35 TTB

They are not the same as your Explorer
 






HahnsB2

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88 Bronco II
1990 MIGHT have a 28 spline 8.8, its not a 31 spline

1990 MIGHT have a HYBRID dana 28/35 TTB axle, but not a true D35 TTB

They are not the same as your Explorer
B2s never got any 8.8s or hybrid D28/35s. Hybrid didn't even start till 93 in 2.3 and 3.0 rangers. B2s built after 11/89 will have a D35 front, the D35 has 10 bolts, the D28 has 12. ALL B2s have 7.5 rears.
 






410Fortune

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I have seen in person 2ea 90 BII's that had 8.8 rears as well as the D35 TTB from the factory

I was under the impression the D35 up front was the "hybrid" but never confirmed
 






HahnsB2

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88 Bronco II
I have seen in person 2ea 90 BII's that had 8.8 rears as well as the D35 TTB from the factory

I was under the impression the D35 up front was the "hybrid" but never confirmed
And that is why not a single person on B2.org or TRS have ever seen one? Not calling you flat out wrong, but it's very highly unlikely.
 






4x4junkie

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No such thing as a "hybrid" D28/35 diff before '93.

The 4.0 was never put in a BII either (not in production units anyway).

All BII rears are 7.5s
 






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