never been on a forum before so please excuse. i have an 89 w/auto and the rear end was damaged in an wreck and i need to know which years will fit(are they all the same?) and if i need to stay with the same ratio and if anthing is different between auto and manual rears. can anyone help?
89 b II
- Thread starter jerryp
- Start date
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Hello and welcome...
First off you have to make sure that you match the gear ratios for the front and rear axles. If you look on your door tag it will give you an axle code. That code will tell you your gear ratio and tell you if it's a limited slip or open rear diff.
From my experience the gear ratios vary quite a bit depending on the country you're in and what part. Without knowing your axle code and using just the info you gave I'd have to say that you have 3.73 LS gears. But that's just a guess.
Here's the axle codes and their gear ratios.
42 open 3.45
44 open 3.73
47 open 4.10
D2 limited slip 3.45
D4 limited slip 3.73
D7 limited slip 4.10
Note any of the 4.10's are pretty rare to find.
First off you have to make sure that you match the gear ratios for the front and rear axles. If you look on your door tag it will give you an axle code. That code will tell you your gear ratio and tell you if it's a limited slip or open rear diff.
From my experience the gear ratios vary quite a bit depending on the country you're in and what part. Without knowing your axle code and using just the info you gave I'd have to say that you have 3.73 LS gears. But that's just a guess.
Here's the axle codes and their gear ratios.
42 open 3.45
44 open 3.73
47 open 4.10
D2 limited slip 3.45
D4 limited slip 3.73
D7 limited slip 4.10
Note any of the 4.10's are pretty rare to find.
ranger 8.8 will work after relocating the spring pads, if i recall right it may have been 1-2 inches wider- any one have a spec on that ??
BLADE262US
Active member
Explorer rear end will work as well its an 8.8 96 and latter have disk brakes and it will have 31 spline axles just like the full size just narrowed you will have to relocate the spring pads and it will be around an inch wider on each side . Never had a problem after that with my B2 with 351 . The 7.5 rear was gone every time you touched the gas I also mated a fullsize bronco drive shaft to it because that little CV shaft will be the next thing you see flying out 
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jaminjimlp
New member
call a junk yard they have a computer program that tells all the compatable parts between models and years
373 gears were in my 89 bronco II i busted a loner tool off into my rear end had the whole thing sent out for any repairs nessary with all seals to be repaced it was
totally rebuilt price 280.oo came back in two weeks time now it has new parts drum to drum never had anything in it but performance **** it might be for sale if you live close enough @ 50% off >
