axle ?
Post Fiend
Joined: Nov 2003
Posts: 21,285
Likes: 16
From: Nutter Fort, WV
The both have leaf springs in a 250.
The 44 has about a 3" diameter lockout hub on it.
The 50 is much larger.
I need to measure mine again as I can not remember if it is 2.75" or 3.25" right now.
Another thing that may clue you in is the cab.
Regular cabs tend to have a 44.
Extended and crew cabs tend to have the 50.
My 86 regular cab diesel has a 44.
My friends 87 extended cab has a 50 under a 351 gas motor.
The 44 has about a 3" diameter lockout hub on it.
The 50 is much larger.
I need to measure mine again as I can not remember if it is 2.75" or 3.25" right now.
Another thing that may clue you in is the cab.
Regular cabs tend to have a 44.
Extended and crew cabs tend to have the 50.
My 86 regular cab diesel has a 44.
My friends 87 extended cab has a 50 under a 351 gas motor.
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New User
Joined: Jun 2004
Posts: 15
Likes: 0
thanks for the information mine is3.25 .I want to change the gears from 3.55 to 4.56 because it has 33" and i carry alot of weight. One of the local shops told me I would have to change the carrier/spool as well. is this true and if so any idea's
Posting Guru
Joined: Apr 2004
Posts: 1,127
Likes: 2
From: Lewistown, PA
Yes, whenever you pass the carrier break you must also upgrade to the next carrier.
I'll have to do the same thing to my '77 when I do a gear change. The rear end should be fine. I know that the 9" rear's carrier break is 4.56(meaning you can go to a 4.56's, but no lower), but I'm not sure about your truck. Though I would assume that 4.56's would be fine.
I'll have to do the same thing to my '77 when I do a gear change. The rear end should be fine. I know that the 9" rear's carrier break is 4.56(meaning you can go to a 4.56's, but no lower), but I'm not sure about your truck. Though I would assume that 4.56's would be fine.
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New User
Joined: Jun 2004
Posts: 15
Likes: 0
thanks for the info. my rear axle is a semi floating 10.25 with a factory limted slip hopefully its the same idea as your 9" and splits at 4.56
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