looking to decode a 1989 and a1988 bronco II one 6 cyl 2.9 auto and one 2.9ltr. 5speed both 4x4 ..where can i find info on www
Thanks Terry
vin #
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- Posts: 3
- Joined: Wed Apr 25, 2007 7:38 pm
CODE: DEFINITION:
42 3.45
44 3.73
47 4.10
D2 3.45 (limited slip)
D4 3.73 (limited slip)
D7 4.10 (limited slip)
On 4x4’s, there is a Dana 28 axle up front, until october 1989 (check your build date, you may have a 35) when it was replaced with a special Dana 35. The front axle should have the same gear ratio as the rear. The D35 is a stronger (than the D28) and can be swapped over from a Ranger, or exploder, (or newer BII, if not already equipped). The D28 can be re-geared; however, units with the 3.45 ratio, going to a lower (numerically higher) ring and pinion gear must use the appropriate housing. to tell a 35 from a 28, the bolts on the diff - a 35 has ten, and a 28 has 12.
All Bronco II’s came with a special version of the 7.5” rear, which has a capacity of 2640lbs. Other Ford 7.5” axle housings will NOT work in place of the BII unit; however, the rings and pinions from any 7.5 can be swapped into it.
I have a d4 code, trac loc in back, and open dana 35 diff in the front, 3.73 from factory.
hope this helps
nate
42 3.45
44 3.73
47 4.10
D2 3.45 (limited slip)
D4 3.73 (limited slip)
D7 4.10 (limited slip)
On 4x4’s, there is a Dana 28 axle up front, until october 1989 (check your build date, you may have a 35) when it was replaced with a special Dana 35. The front axle should have the same gear ratio as the rear. The D35 is a stronger (than the D28) and can be swapped over from a Ranger, or exploder, (or newer BII, if not already equipped). The D28 can be re-geared; however, units with the 3.45 ratio, going to a lower (numerically higher) ring and pinion gear must use the appropriate housing. to tell a 35 from a 28, the bolts on the diff - a 35 has ten, and a 28 has 12.
All Bronco II’s came with a special version of the 7.5” rear, which has a capacity of 2640lbs. Other Ford 7.5” axle housings will NOT work in place of the BII unit; however, the rings and pinions from any 7.5 can be swapped into it.
I have a d4 code, trac loc in back, and open dana 35 diff in the front, 3.73 from factory.
hope this helps
nate