Picked up a 12 bolt today - Chevelle Tech
Transmission & Driveline Transmissions and Differentials

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post #1 of 10 (permalink) Old Aug 14th, 19, 8:44 PM Thread Starter
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Jeff
 
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Picked up a 12 bolt today

Was getting a haircut today and noticed on my phone that a Moser 12 bolt rear, for 67-69 F body was for sale locally on a social media link. The Ad said it was a Moser rear with c clip eliminator axles, a spool and 4.10 gears. I called the guy and the rear came out of his 68 Camaro he bought recently. He decided to go with wider tires and a narrowed new 9Ē, and the reason for selling the 12 bolt. That was the back story.

So I drive 45 minutes to where the seller is, to take a look. Upon first inspection, I couldnít see any c clip eliminator ends on the housing, even pulled a caliper and rotor to see better, if anything it looked like a stock c clip outer axle ends. So thinking that the rear has c clips, I imagined thereís probably no way it could have a closed off spool? I asked asked seller if driving on the street with the spool rear was brutal during turning, but he seemed puzzled by question? Investigating further, I popped the diff cover off and low and behold, it had a regular posi-traction case and factory style c clips. The housing is very nice, looked similar to GM oem except the center casting looked a little beefier and the inner axle tubes are fully welded to the center housing/casting. The 3rd member cap bolts heads were Allen style. Also came with SSBC calipers and rotors. No emergency brake cables. 3rd member diff had purple pre load springs, could be a Yukon, idk? The 4.10 gears were Yukon brand. Hopefully not horrible Chinese junk? The rear Measures around 54Ē backing plate flange to flange. As you can see In pic of caliper, some genius used some hex nuts to space the caliper?

Not sure why they advertised this as c clip elimanator axles? Anyway, they were firm on price and the seller wasnít really a car guy because when I popped the diff cover to expose the Posi, he didnít seem to know what he was looking at. I was honest with him and told him that it wasnít a spool but a Posi diff with c clip factory axles. $1500 was the price and included a lightly worn set of 3.08 gears and 4 leaf spring u bolts. Hopefully not too bad of a deal? In my neck of the woods, you rarely see oem 12 bolts for sale, let alone aftermarket ones.

Anyone heard of a moser rear coming with c clip factory axles?

I picked this up as I might be looking for a 67-68 F body or 68-72 Nova project. Nice to have a newer 12 bolt in my parts bin!

Headed off to work for two weeks, Iíll try to get some better pics.
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Jeff

64 El Camino Pro street, 496, T-400, 9" 3.73


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post #2 of 10 (permalink) Old Aug 15th, 19, 8:26 AM
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Freddie
 
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Re: Picked up a 12 bolt today

Looks like mono leaf spring perches. Moser does build rear ends with c clip axles. I've sold several of them that way. If it has purple springs in it then it's a Yukon Dura Grip.
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post #3 of 10 (permalink) Old Aug 15th, 19, 4:33 PM Thread Starter
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Quote:
Originally Posted by big gear head View Post
Looks like mono leaf spring perches. Moser does build rear ends with c clip axles. I've sold several of them that way. If it has purple springs in it then it's a Yukon Dura Grip.
Seller said it was in a 68 camaro. Any idea on how deep the spring perches are for mono vs multi leaf. I may have goofed on this one! 🤦‍♂️

Jeff

64 El Camino Pro street, 496, T-400, 9" 3.73


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post #4 of 10 (permalink) Old Aug 15th, 19, 6:51 PM
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Beth
 
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Re: Picked up a 12 bolt today

Quote:
Originally Posted by fr8dog View Post
Seller said it was in a 68 camaro. Any idea on how deep the spring perches are for mono vs multi leaf. I may have goofed on this one!
The mono's are 1" deep and multis are 1-13/16" deep.

The multis also have a hole in the center of the mount to locate the pin that holds the multi-springs together.

Scroll down this page : rear suspension and brakes
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67 Chevelle convertible, 138 vin, original 4 speed, bucket seats, Marina Blue with black interior
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post #5 of 10 (permalink) Old Aug 18th, 19, 12:23 AM
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Re: Picked up a 12 bolt today

That sounds like a good deal for a first gen camaro 12 bolt posi. Ive been trying to sell a 66 chevelle 12 bolt posi locally for the same price and havent got a single call. Jim
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Jim

70 chevelle, SS clone 454 4 speed
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66 chevelle 350 4 speed 3.55 12 bolt
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post #6 of 10 (permalink) Old Aug 18th, 19, 4:29 PM Thread Starter
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Jeff
 
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Re: Picked up a 12 bolt today

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Originally Posted by Jim Mac View Post
That sounds like a good deal for a first gen camaro 12 bolt posi. Ive been trying to sell a 66 chevelle 12 bolt posi locally for the same price and havent got a single call. Jim
I had a 65 Chevelle 12 bolt 4.56 posi for sale. Had to let it go for $1200 and the buyer paid for shipping.

Jeff

64 El Camino Pro street, 496, T-400, 9" 3.73


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post #7 of 10 (permalink) Old Aug 18th, 19, 5:32 PM
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Re: Picked up a 12 bolt today

Jim if you weren't on the other side of the country I'd be interested in that '66 rear end.


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post #8 of 10 (permalink) Old Aug 19th, 19, 1:02 AM
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Re: Picked up a 12 bolt today

shipping would be a hassle. who knows, maybe theres 1 more A body in my future, or it might be cheaper to cut the perches off and have camaro pads installed vs having a posi set up put in the open 12 bolt with a lock right, that's in the camaro now. jim

Jim

70 chevelle, SS clone 454 4 speed
71 camaro. (owned since 1978!) 6-71 blown small block 400
66 chevelle 350 4 speed 3.55 12 bolt
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post #9 of 10 (permalink) Old Aug 19th, 19, 7:53 AM
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Freddie
 
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Re: Picked up a 12 bolt today

Please don't mess up a good '66 Chevelle 12 bolt. You may not be having much luck selling it, but those rear ends are too hard to find when you need one.
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post #10 of 10 (permalink) Old Aug 20th, 19, 12:14 AM
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Re: Picked up a 12 bolt today

actually have a guy looking at it Tuesday, he has a 66 ss that someone pulled the rear from and he needed a early dated rear. jim
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Jim

70 chevelle, SS clone 454 4 speed
71 camaro. (owned since 1978!) 6-71 blown small block 400
66 chevelle 350 4 speed 3.55 12 bolt
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