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Old 08-05-2013, 04:26 PM   #1
blazerboy72
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3.73 and posi

I have a 12 bolt posi that I will not be using. I was told it was rebuilt with stronger springs when I bought it. It has 3.73 gears with it (cant remeber which series that makes it). Looking to get what I paid for it $375 with gears $350 with out.
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Old 08-05-2013, 06:31 PM   #2
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Re: 3.73 and posi

What brand name and are the ring and pinion new?
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Old 08-05-2013, 06:55 PM   #3
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Re: 3.73 and posi

Guess that would help it is all stock gm parts. I'm open to offers. It is just taking up room on the shelf.
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Old 08-05-2013, 09:51 PM   #4
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Re: 3.73 and posi

Ok, I'm looking for a new one
Thanks anyway
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Old 08-05-2013, 10:12 PM   #5
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Re: 3.73 and posi

Interested. Any documentation of rebuild and/or photos? Shipping cost to Cedar Park Tx 78613
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Old 08-06-2013, 04:42 AM   #6
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Re: 3.73 and posi

Quote:
Originally Posted by WIDESIDE72 View Post
Interested. Any documentation of rebuild and/or photos? Shipping cost to Cedar Park Tx 78613
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Looks like shipping is $25
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Old 08-06-2013, 01:05 AM   #7
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Re: 3.73 and posi

Are you sure it's for a truck and not a car 12 bolt?
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Old 08-06-2013, 04:40 AM   #8
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Re: 3.73 and posi

I do not have any documentation of the rebuild, only the mans word that it had been done. I am almost certain it is for a truck but if you can tell me the difference Ill double check.
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Old 08-06-2013, 01:26 PM   #9
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Re: 3.73 and posi

Does the posi carrier have the window like you took the photo of the springs through on one side or both? What is the diameter of the pinion shaft? What is rhe nber stamped on the carrier housing? How many splines are on the axle housing? These details will tell if its for a car or truck.
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Old 08-06-2013, 03:07 PM   #10
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Re: 3.73 and posi

There are 2 windows and the casting number is ed30060 which is for a series 4 truck carrier.
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Old 08-07-2013, 07:14 AM   #11
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Re: 3.73 and posi

$350 shipped
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Old 08-07-2013, 04:45 PM   #12
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Re: 3.73 and posi

Ttt
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Old 08-08-2013, 07:15 AM   #13
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Re: 3.73 and posi

ttt need it gone
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Old 08-09-2013, 06:46 AM   #14
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Re: 3.73 and posi

$325 shipped final price drop
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Old 08-11-2013, 06:43 PM   #15
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Re: 3.73 and posi

Will a 4 series carrier fit in a there series housing.
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Old 08-11-2013, 07:30 PM   #16
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Re: 3.73 and posi

Yes any will fit. They are just for different ratio ranges.
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Old 08-12-2013, 12:05 AM   #17
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Re: 3.73 and posi

Looks like 41 teeth on the ring and 10 teeth on the pinion. Wouldn't that make it a 4:10 ratio?
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Old 08-12-2013, 01:16 AM   #18
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Re: 3.73 and posi

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Old 08-12-2013, 04:42 AM   #19
blazerboy72
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Re: 3.73 and posi

There are 11 teeth on the pinion making it 3.727....

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Old 08-12-2013, 10:26 AM   #20
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Re: 3.73 and posi

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Old 08-12-2013, 04:26 PM   #21
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Re: 3.73 and posi

sold
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