1989 F250 Axle Code

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Jan 28, 2024 | 08:21 PM

Farmhills53565

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1989 F250 Axle Code

I have a 1989 F250 with a 5.0, trans code M, Axle code 29, 2wd that I have some questions. The trans has to be the Mazda but all charts says F250s had the ZF. The axle code is 29 but all the charts say 29 is a Ford rear end with 3.55 gears and 1991 only. What are the charts missing?

Jan 28, 2024 | 08:53 PM

rla2005

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You have a light duty F250 with a M5OD Mazda transmission and a semi-floating Sterling 10.25 rear axle with 3.55 gearing.

Jan 29, 2024 | 12:01 AM

Conanski

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What is the GVWR on it? I'd guess something like 7200lbs, that makes it a light duty F250 which was unique to the late '80's if I remember correctly.

Jan 29, 2024 | 08:11 AM

rla2005

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Identification codes cut from my 1988 Ford Service Manual:

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Aug 29, 2024 | 12:02 AM

LandA Farms

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Quote:

Originally Posted by rla2005

Identification codes cut from my 1988 Ford Service Manual:

Hi i have an 87 f250 302 4x4 4 speed manual, the axle code is 89 and the trans code is f, I'm trying to swap the trans and rear axle in my 89 bronco. My bronco has a 300i6 that was originally a zf5 truck and is 8 lug when I got it but I bent the rear axle.

Aug 29, 2024 | 06:30 AM

rla2005

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From: Kentucky

According to the chart posted earlier Axle Code B9 is a semi-floating Sterling 10.25 with 3.55 gear ratio.. Trans Code F looks to be a T18 from this info at Gary's Garagemahal: Trans Codes

edit: Since yours is 89, that does not apply.

Aug 29, 2024 | 08:12 AM

tjc transport

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axle code 89 should be a 4.10 limited slip semi floating sterling 10.25
agreed, trans code F is T-18 4 speed manual trans.

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Sep 2, 2024 | 07:01 AM

LandA Farms

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Quote:

Originally Posted by rla2005

Sorry about that...the table I posted shows B9 not 89!

Quote:

Originally Posted by rla2005

Quote:

Originally Posted by tjc transport

axle code 89 should be a 4.10 limited slip semi floating sterling 10.25
agreed, trans code F is T-18 4 speed manual trans.

thank you, for the front what similarities does d50 ttb and the d44 ttb I want to put that rear axle in a bronco but I don't want 5lug in front and 8 in back. Can I get away with swapping hubs or do I need a hole axle?