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Old 10-21-2007, 01:47 PM
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what's the diff?

can anyone tell me what kind of diff this is?


everyone i know is telling me something different, no two people who i have had over here looking yet have told me the same thing.
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Old 10-21-2007, 02:31 PM
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the numbers are 522498, just above the numbers is a m inside a square cast onto the carrier
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Old 10-21-2007, 02:53 PM
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I say Ford 9", but the casting number looks more 8".... but I don't recognize those support ribs in the casting as an 8", AND the shape of the case is too round for an 8".

Do the axle tubes taper at the end? If so, it might be an early 9" (pre 67)

So I guess I'm saying... I dunno.
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Old 10-21-2007, 03:05 PM
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Sure looks to me to be a Ford. It's not a 9" but could be a 7.5".
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Old 10-21-2007, 03:14 PM
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Quote:
Originally Posted by curtis73
I say Ford 9", but the casting number looks more 8".... but I don't recognize those support ribs in the casting as an 8", AND the shape of the case is too round for an 8".

Do the axle tubes taper at the end? If so, it might be an early 9" (pre 67)

So I guess I'm saying... I dunno.
they don't appear to taper, would it be a slight taper or something that would be obvious without having to measure?
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Old 10-21-2007, 03:15 PM
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Quote:
Originally Posted by Centerline
Sure looks to me to be a Ford. It's not a 9" but could be a 7.5".
I'm not familiar with those, what were they used in?
Anyhow, I've got both 8 and 9 inch housings around and several third members too. I've never seen a Ford third member that looked like that one though. Could it be early GM? And although I've had quite a few 8 3/4" Mopars over the years too, I haven't had one in quite sometime and so have none here to look at.
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Old 10-21-2007, 03:20 PM
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here's a '57 and up 9"

8"

7.5"

a 9' "caf22c" whatever that is

and a 9" pro 57 and up
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Old 10-21-2007, 03:32 PM
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Quote:
Originally Posted by atotalnincompoop
they don't appear to taper, would it be a slight taper or something that would be obvious without having to measure?
I've got a '58 large bearing housing and there's no taper in it. I don't have any small bearing 57-59 housings anymore. I don't know if they were tapered or not.
As a possible clue, what is the bolt circle size of the wheel studs? 4.5", 4.75", 5" or 5.5"?

Last edited by Notorious; 10-21-2007 at 03:44 PM.
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Old 10-21-2007, 05:25 PM
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61 - 63 chevy 3/4 ton truck ?
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Old 10-21-2007, 05:57 PM
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Quote:
Originally Posted by Notorious
As a possible clue, what is the bolt circle size of the wheel studs? 4.5", 4.75", 5" or 5.5"?
the bolt circle is 5"
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Old 10-21-2007, 06:07 PM
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the brake backing plate mounting flange is shaped similarly to the gm 10 and 12 bolt, tapered from top to bottom( trapazoid shaped), with flat sides, a curved bottom side and a slightly pointed top side
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Old 10-21-2007, 06:08 PM
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Looks like early 60s olds to me
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Old 10-21-2007, 06:13 PM
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pontiac is my guess! get the casting numbers off the wheel cylinders and run them on the bendix website. post your results.
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Old 10-21-2007, 06:23 PM
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Quote:
Originally Posted by 55 dude
pontiac is my guess! get the casting numbers off the wheel cylinders and run them on the bendix website. post your results.
i'll get those numbers tomorrow, good idea
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Old 10-21-2007, 08:19 PM
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Quote:
Originally Posted by denno5644
Looks like early 60s olds to me
thats what i was going to say.
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