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10-10-2007, 09:45 PM
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Hummer Veteran
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Join Date: Mar 2005
Location: Sugarland Texas
Posts: 43
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Re: The Alpha's cast iron front diff....
I tried this morning to make the rear work in the front. It is to large to fit in and the splines are different. If you have any other ideas let me know. Is there any trick that i am missing?Arb is still a ways from making one.
Last edited by Auggie Mathis : 10-10-2007 at 09:56 PM.
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10-11-2007, 10:43 PM
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Hummer Guru
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Join Date: Jul 2005
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Re: The Alpha's cast iron front diff....
Quote:
Originally Posted by Auggie Mathis
I tried this morning to make the rear work in the front. It is to large to fit in and the splines are different. If you have any other ideas let me know. Is there any trick that i am missing?Arb is still a ways from making one.
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Did you try the 4:56 rear or the 4:10 rear?
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10-11-2007, 11:00 PM
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Hummer Veteran
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Join Date: Mar 2005
Location: Sugarland Texas
Posts: 43
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Re: The Alpha's cast iron front diff....
Yes the casting is the same its bolts right on. And i tried 4.56 gears
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10-11-2007, 11:11 PM
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Hummer Expert
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Join Date: May 2005
Location: Southern California
Posts: 829
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Re: The Alpha's cast iron front diff....
Cool
I could bolt in the axle houseing but I don't feel comfortable setting up a diff and ring gears.
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10-11-2007, 11:38 PM
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Hummer Authority
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Join Date: Nov 2006
Location: SL,UT
Posts: 1,197
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Re: The Alpha's cast iron front diff....
I thought that this cast iron housing was the one originally built for the ZR2 Blazer, it was being brought back specifically for this application.
You only need the housing, you should already have the ring and pinion. 
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10-12-2007, 04:02 AM
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Hummer Guru
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Join Date: Dec 2006
Posts: 2,195
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Re: The Alpha's cast iron front diff....
i would like to do this to mine too if it isnt to costly, anyone have an approximate price?
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10-12-2007, 06:23 AM
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Hummer Guru
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Join Date: Jul 2005
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Re: The Alpha's cast iron front diff....
It's a little more complicated than that. And without photo's, I reluctantly want to call BS on Auggie. I know enough to be dangerous, so you should know more....cough up the pics 
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10-12-2007, 06:25 AM
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Hummer Guru
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Join Date: Jul 2005
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Re: The Alpha's cast iron front diff....
Quote:
Originally Posted by 03H3
I thought that this cast iron housing was the one originally built for the ZR2 Blazer, it was being brought back specifically for this application.
You only need the housing, you should already have the ring and pinion. 
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Yes, but they stopped production in 2003. I'm sure it's been redesigned as well. So technically, the application is the same, but the actual housing is different.
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10-12-2007, 06:27 AM
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Hummer Guru
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Join Date: Jul 2005
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Re: The Alpha's cast iron front diff....
Quote:
Originally Posted by Auggie Mathis
Yes the casting is the same its bolts right on. And i tried 4.56 gears
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So where/how do you have a spare e-locker/differential laying around? Do you have both axles open right now?
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10-12-2007, 03:06 PM
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Hummer Veteran
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Join Date: Mar 2005
Location: Sugarland Texas
Posts: 43
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Re: The Alpha's cast iron front diff....
I work at the dealer so I can get any parts that i need . My son is out of town till Monday and i will take you a dam picture there is no BS here just trying to find a front locker. I cant find anything that works. The one that amstar uses was modified to the point that I cant justify the cost of it.
Last edited by Auggie Mathis : 10-12-2007 at 03:18 PM.
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10-12-2007, 04:00 PM
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Hummer Guru
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Join Date: Jul 2005
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Posts: 5,900
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Re: The Alpha's cast iron front diff....
Quote:
Originally Posted by Auggie Mathis
I work at the dealer so I can get any parts that i need . My son is out of town till Monday and i will take you a dam picture there is no BS here just trying to find a front locker. I cant find anything that works. The one that amstar uses was modified to the point that I cant justify the cost of it.
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Sorry, I just know someone who has used it. The rear Eaton in the front CI case.
So by how much does it not fit? And if they are both 4:56's it should work. If it is a tight fit, you could use a dye grinder to make "a little more room"?
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