Re: Does this look ok? 489 Center?
[Re: DoctorDiff]
#251101
03/11/09 09:12 PM
03/11/09 09:12 PM
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Joined: Sep 2005
Posts: 1,978
USA
Suregrip391
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Quote:
That is normal for '72-'74 489 casting third-members.
Does the MS number on the gear tell the date?
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Re: Does this look ok? 489 Center?
[Re: Suregrip391]
#251102
03/11/09 09:14 PM
03/11/09 09:14 PM
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Joined: Jan 2003
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JohnRR
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Quote:
Quote:
That is normal for '72-'74 489 casting third-members.
Does the MS number on the gear tell the date?
no I'm pretty sure that number will match a number stamped on the stem of the pinion , pick that broken looking section and maybe you will be able to see it .
what concerns me is the part number on that gear , thats way to early a number to be a 489 gear ... I think ... I have a 3.55 gear set down stairs I can look at .
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Re: Does this look ok? 489 Center?
[Re: JohnRR]
#251104
03/11/09 09:17 PM
03/11/09 09:17 PM
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Joined: Sep 2005
Posts: 1,978
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Suregrip391
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Quote:
Quote:
Quote:
That is normal for '72-'74 489 casting third-members.
Does the MS number on the gear tell the date?
no I'm pretty sure that number will match a number stamped on the stem of the pinion , pick that broken looking section and maybe you will be able to see it .
what concerns me is the part number on that gear , thats way to early a number to be a 489 gear ... I think ... I have a 3.55 gear set down stairs I can look at .
Thank you, if you can look at it that would be great. Any help appreciated. 
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Re: Does this look ok? 489 Center?
[Re: JohnRR]
#251106
03/11/09 10:13 PM
03/11/09 10:13 PM
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Joined: Jan 2003
Posts: 74,990
U.S.S.A.
JohnRR
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Quote:
Quote:
Quote:
That is normal for '72-'74 489 casting third-members.
Does the MS number on the gear tell the date?
no I'm pretty sure that number will match a number stamped on the stem of the pinion , pick that broken looking section and maybe you will be able to see it .
what concerns me is the part number on that gear , thats way to early a number to be a 489 gear ... I think ... I have a 3.55 gear set down stairs I can look at .
Just looked at the gears , the MS # ??? it's not on the pinion stem . The date is there as Dr. diff says , its after the MS number , I see a 2 and then a 1 . the part number is correct , I forgot the ring gear doesn't care what housing it is in , it's the same ring gear they have been making since they started making 3.55's for 8 3/4 rears .
Oh wait , I'm not dr. diff and it appears he is the ONLY person ON the planet that knows ANYTHING about the 8 3/4 rear ... my bad . 
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Re: Does this look ok? 489 Center?
[Re: Suregrip391]
#251108
03/12/09 05:02 AM
03/12/09 05:02 AM
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Joined: Oct 2003
Posts: 21,345
Marysville, O-H-I-O
70Cuda383
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Marysville, O-H-I-O
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a dented cast iron housing? I didn't know cast iron could dent! I would imagine it would crack before denting!
**Photobucket sucks**
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Re: Does this look ok? 489 Center?
[Re: 70Cuda383]
#251109
03/12/09 05:21 AM
03/12/09 05:21 AM
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Joined: Oct 2003
Posts: 21,345
Marysville, O-H-I-O
70Cuda383
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Too Many Posts
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Posts: 21,345
Marysville, O-H-I-O
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what happened to the good doctors website?
I enjoyed looking on there and dreaming of parts I cannot afford right now!
**Photobucket sucks**
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Re: Does this look ok? 489 Center?
[Re: pete]
#251111
03/12/09 12:31 PM
03/12/09 12:31 PM
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Anonymous
Unregistered
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Anonymous
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Quote:
when it comes to rears do yourself a favor and listen to drdiff and no one else. Pete
Thats why i use Moser ONLY!!!...
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Re: Does this look ok? 489 Center?
#251112
03/13/09 01:31 AM
03/13/09 01:31 AM
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Joined: May 2007
Posts: 1,675
Mi.
G-Money1320
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Its not a dent persay but a dimple, and I have seen them on numerous 489 cases. The one in the pic looks to have a crack in it though.
416 stroker from Nick at Compu-flow. 11.14 in full street trim. Seems like a new best every time out.
11.06 open headers----so far!!
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Re: Does this look ok? 489 Center?
[Re: DoctorDiff]
#251114
03/13/09 08:06 AM
03/13/09 08:06 AM
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Joined: Jan 2003
Posts: 74,990
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JohnRR
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Quote:
The crack appears to be dried mud packed into the casting dimple.
which is why I asked if he picked at it ....
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Re: Does this look ok? 489 Center?
[Re: JohnRR]
#251115
03/13/09 03:49 PM
03/13/09 03:49 PM
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Joined: Sep 2005
Posts: 1,978
USA
Suregrip391
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Quote:
Quote:
The crack appears to be dried mud packed into the casting dimple.
which is why I asked if he picked at it ....
Hi Guys, sorry...No I have not picked at it. This is something I am buying and the seller sent me pics. I just did not want to buy something that was cracked or damaged. When I get it here, I will have a look and see. Thanks for the postings...It was a big help! 
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