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8 3/4 sure grip
#2005521
02/04/16 04:11 PM
02/04/16 04:11 PM
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Joined: Jan 2004
Posts: 774 Western Pa
farmboy70
OP
super stock
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OP
super stock
Joined: Jan 2004
Posts: 774
Western Pa
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I recently picked this 489 case. The owner said it was a Detroit locker and he hated it because of the binding when parking. Can anyone identify if it is a Detroit locker from my pictures or let me know how to tell. Thank Dave
Last edited by farmboy70; 02/04/16 04:12 PM.
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Re: 8 3/4 sure grip
[Re: NANKET]
#2005545
02/04/16 05:07 PM
02/04/16 05:07 PM
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Joined: Jan 2003
Posts: 25,967 Rio Linda, CA
John_Kunkel
Too Many Posts
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Too Many Posts
Joined: Jan 2003
Posts: 25,967
Rio Linda, CA
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When the 489 was first introduced in late '68 I believe the clutch-type SG was used in it.
The INTERNET, the MISinformation superhighway
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Re: 8 3/4 sure grip
[Re: John_Kunkel]
#2005550
02/04/16 05:26 PM
02/04/16 05:26 PM
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Joined: Jan 2003
Posts: 16,376
dogdays
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 16,376
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IMHO you lucked out as that is generally considered to be the cream of the limited slip crop for street cars that occasionally go to the dragstrip.
The blue color arc around the pin appears to be induction hardening of that area. Or is it heat transmitted through the pin? Enquiring minds want to know.
R.
Last edited by dogdays; 02/04/16 05:28 PM.
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Re: 8 3/4 sure grip
[Re: farmboy70]
#2005714
02/04/16 10:12 PM
02/04/16 10:12 PM
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Joined: Jan 2004
Posts: 774 Western Pa
farmboy70
OP
super stock
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OP
super stock
Joined: Jan 2004
Posts: 774
Western Pa
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Thanks everyone for the help. I will tear it apart and see if there is any obvious damage. From what I have searched it looks like I could use this suregrip in a 489 case. Is that true? If so I could have the better suregrip with keeping my cars axle with the correct case numbers. Thanks again Dave
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Re: 8 3/4 sure grip
[Re: DoctorDiff]
#2005717
02/04/16 10:21 PM
02/04/16 10:21 PM
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Joined: Jan 2004
Posts: 774 Western Pa
farmboy70
OP
super stock
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OP
super stock
Joined: Jan 2004
Posts: 774
Western Pa
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That is a clutch type (power-lock) sure-grip.
Looks like it has been apart. The owner is most likely running an incorrect (Dana 44) clutch pack or he did not add a bottle of friction modifier to the gear lube. The owner did say that when he bought the car ,the seller said it was rebuilt. He said other than that he has no info. If it looks OK inside I will be in touch for parts to rebuild it. Thanks Dave
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Re: 8 3/4 sure grip
[Re: dogdays]
#2005720
02/04/16 10:23 PM
02/04/16 10:23 PM
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Joined: Jan 2004
Posts: 774 Western Pa
farmboy70
OP
super stock
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OP
super stock
Joined: Jan 2004
Posts: 774
Western Pa
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IMHO you lucked out as that is generally considered to be the cream of the limited slip crop for street cars that occasionally go to the dragstrip.
The blue color arc around the pin appears to be induction hardening of that area. Or is it heat transmitted through the pin? Enquiring minds want to know.
R. No idea, Dr Diff a little help here. LOL
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Re: 8 3/4 sure grip
[Re: dogdays]
#2006072
02/05/16 02:26 PM
02/05/16 02:26 PM
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Joined: Jan 2003
Posts: 75,092 A Banana Republic near you.
JohnRR
I Win
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I Win
Joined: Jan 2003
Posts: 75,092
A Banana Republic near you.
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IMHO you lucked out as that is generally considered to be the cream of the limited slip crop for street cars that occasionally go to the dragstrip.
The blue color arc around the pin appears to be induction hardening of that area. Or is it heat transmitted through the pin? Enquiring minds want to know.
R. Pretty sure it's hardening , everyone I have seen looks like that .
running up my post count some more .
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