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Author Topic: 67 12 bolt posi  (Read 3042 times)
mopar346
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« on: January 27, 2011, 09:46:50 PM »

I scored a 67 (i believe) 12 bolt posi at the Turkey rod run this year for $200. My question is, is it rare enough that I would be better off selling it and buying a 69 housing or offering it up for trade for a 69 unit. I know that I can change the spring perches and run it with no issue (after rebuild of course) and I don't really care about dates but many do. I just have enough respect for a rare or hard to find date code that I would hate to use it where it doesn't matter if it is a rare housing. Not looking to make a profit just end up with a 12 bolt. So what do ya'll think, is it rare or hard to find?
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william
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« Reply #1 on: January 27, 2011, 10:04:23 PM »

67 Camaro 12 bolt axles are hard to find. Many are getting modified for early Novas. If it is a posi with 3:55, 3:73 or lower gears it is valuable. Does it have the T-bar bracket?

Nothing wrong with making a few bucks on it to get into a '69 axle.
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KurtS
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« Reply #2 on: January 27, 2011, 10:46:56 PM »

Pics - http://www.camaros.org/radiusrod.shtml
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Kurt S
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mopar346
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« Reply #3 on: January 27, 2011, 10:49:07 PM »

I believe it is a 2.73 gear which is no big deal to me as it needs to be built anyway. The carrier is not diiferent is it? I don't believe it has the traction bar bracket if that is what you are referring to, but I can double check when I get home. Passenger side lower slightly forward location? Got a picture?
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mopar346
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« Reply #4 on: January 27, 2011, 10:50:25 PM »

That's pretty good, you posted the picture before I ask.
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mopar346
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« Reply #5 on: January 27, 2011, 10:53:29 PM »

No offense but Chevys are so dull with their all black suspension.  Grin
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tom
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« Reply #6 on: January 28, 2011, 12:43:13 AM »

I think there were 3 different carriers, and the 2.73 carrier was not compatable with the more desireable high performance ratios. Of course if I'm wrong, someone will post the truth
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69 X11 Z21 L14 glide
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mopar346
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« Reply #7 on: January 29, 2011, 07:41:37 PM »

It doesn't have the traction bar bracket but it appears on quick inspection it may have had something welded to it at one time. I will check further tomorrow, I will also check the gears again. Where are the date codes on the housing I will double check that as well.
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Gramps69Z
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« Reply #8 on: January 29, 2011, 07:51:27 PM »

http://www.camaros.org/drivetrain.shtml#axle

http://www.camaros.org/drivetrain.shtml#AxleCodes
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Captain John Wykoff
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mopar346
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« Reply #9 on: February 04, 2011, 01:55:34 PM »

Axle code is BY 0914 G2

BY        68 only 2.73 12 bolt posi
09        Semtember
14        14th
G         Detriot
2          2nd shift

Correct?
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Ed Bertrand
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« Reply #10 on: February 04, 2011, 02:25:06 PM »

Quote
Axle code is BY 0914 G2

BY        68 only 2.73 12 bolt posi
09        Semtember
14        14th
G         Detriot
2          2nd shift

Correct?

You are correct.

Ed
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mopar346
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« Reply #11 on: February 04, 2011, 03:25:19 PM »

Thanks. So it was for a 68 model year. Who in their right mind or what package would have had a 2.73 with a posi no less? Just don't make sense the way I think. If I understood an earlier post the carrier is pretty much useless since it wont hold a steep gear. Is there a spacer available and if so how reliable/durable are they?
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Ed Bertrand
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« Reply #12 on: February 04, 2011, 03:55:32 PM »

The 2.73 could be had with just about any engine if you pressed hard enough, but typically, the "economy ratios" of the L30, L48, L35 and L34 engines had the 2.73 available. Heck, with a few engines you could even get a 2.56 ratio!

Ed
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mopar346
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« Reply #13 on: February 04, 2011, 04:00:00 PM »

What all gears will fit the carrier?
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Ed Bertrand
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« Reply #14 on: February 04, 2011, 04:20:18 PM »

The 2 series carrier will support the 2.29 (1969 full size cars), 2.56 and 2.73.

Ed
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mopar346
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« Reply #15 on: February 04, 2011, 04:24:07 PM »

Thank you.
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KurtS
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« Reply #16 on: February 04, 2011, 09:56:17 PM »

But you're correct, there's adapters to convert them to a 3-series.
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Kurt S
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mopar346
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« Reply #17 on: February 04, 2011, 09:59:16 PM »

And a series 3 is good for what gears? Is the adaptor strong enough to handle serious abuse? 4-500 hp and slicks at times.
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JohnZ
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« Reply #18 on: February 05, 2011, 10:22:26 AM »

And a series 3 is good for what gears?

A 3-series carrier is for gears up to a 3.90:1; 4.10 and up requires a 4-series carrier.
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'69 Z/28
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mopar346
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« Reply #19 on: February 06, 2011, 12:12:21 AM »

Thank you.
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tmodel66
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« Reply #20 on: February 06, 2011, 11:44:14 AM »

I have a 3 series carrier with a spacer ring and GM 456 gears. Came out of my L48 when I put in my new 342 "street gears". I don't know if the spacer ring of this type would work in your housing. My POP says my car came with 331 gears and I assume the gears were changed at the dealer when delivery took place?
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Daniel  
'69 SS 350/4 speed  Fathom Green--POP
mopar346
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« Reply #21 on: February 06, 2011, 03:23:47 PM »

I can PM you if you are interested in getting rid of it.
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