12-bolt...Rare? - Team Camaro Tech
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post #1 of 19 (permalink) Old Jan 10th, 02, 02:35 PM Thread Starter
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Im building a street/strip camaro and plan to use a 12-bolt rear. I got the rear from the owner of a highly modified 67 camaro used only for drag racing. He uses Dana rears, and havent used the 12-bolt since 1972. Now I got the bare 12-bolt housing, axles, and the original 4-series carrier. The 12-bolt is in great shape, even has that weird anti-hop bracket used on some 67 camaros. My questions are: Are these rare? Would it be a shame to cut it up and use C-clip eliminators? If so, what's it worth? I feel a little quilty chopping the ends off.
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post #2 of 19 (permalink) Old Jan 10th, 02, 02:59 PM
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In my opinion, any 12 bolt originally from a First Gen is kinda rare. I looked for quite a while before I found one for my 69 Z28. I would either sell it or set it aside...you can find shortened rearends at reasonable prices from time to time, but nice original rears are hard to come by.

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post #3 of 19 (permalink) Old Jan 10th, 02, 04:27 PM
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I agree with Gambit, save or sell it to someone that needs it. You can get a 12 bolt from something else, less valuable, to cut up.

Just my opinion.
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post #4 of 19 (permalink) Old Jan 10th, 02, 04:37 PM
 
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I would have to agree. Dont cut it up, save it or sell it. Moser has a all new 12 bolt complete with gears and posi for $2200. Or i know of a camaro specialty shop called camaro specialty in East Aurora New York that has lots of 12 bolts for $1400 complete. They might be interested in your 12 bolt. You can find them on the net. serch for camaro specialty in East Aurora.
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post #5 of 19 (permalink) Old Jan 10th, 02, 04:54 PM
 
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okay im the dumb one here..can somebody explain to me what are 12 bolt rears?..or whatev?..why would they be so rare and stuff?.

Clueless christine
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post #6 of 19 (permalink) Old Jan 10th, 02, 05:39 PM
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12 bolt is Chevy-ese for the 60's-70's 8.5" heavy duty rear. The 12 bolt refers to the number of bolts that hold the ring gear to the carrier. Coincedently, it's also the number of bolts that hold the cover to the housing. 10 bolt is the standard duty rear.
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post #7 of 19 (permalink) Old Jan 10th, 02, 06:11 PM
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forgive me if I am wrong, but I think that the 12 bolt is actually an 8.75'' unit.
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post #8 of 19 (permalink) Old Jan 10th, 02, 10:24 PM
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Yes, you are wrong. It's 8.875
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post #9 of 19 (permalink) Old Jan 11th, 02, 01:32 AM
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Marktat, don't cut up that rear axle.

What's you're price? Email me at [email protected]

Boys, help out Clueless, at 6 o'clock position looking at the rear axle from behind the car, if there is one bolt, then it's a 10-bolt rear axle, if there are two bolts at 6 o'clock, then it's a 12-bolt. But I believe she's going to have a 10-bolt 7.5 inch? axle.

Keep the questions coming Christine, that's the only way you'll learn.


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post #10 of 19 (permalink) Old Jan 11th, 02, 01:36 AM
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Yes, and if I am not mistaking, a 10 bolt is either 8.2" or 8.5".
(I hope I'm not wrong on this )

By the way, what are C-clips??

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[This message has been edited by DL (edited 01-11-2002).]
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post #11 of 19 (permalink) Old Jan 11th, 02, 02:53 AM
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If you are going to cut one up get a 12-bolt from a 66 to 69 Carprice or Impala they can be bought pretty resonable. I would not cut the Camaro rear end.
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post #12 of 19 (permalink) Old Jan 11th, 02, 03:42 AM
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C-clips are items removed from inside the diff carrier to allow the axle to be removed from the housing.

They are shaped in a "C", these devices are the only item holding the axle, tire, brake drum/disc in place.

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post #13 of 19 (permalink) Old Jan 11th, 02, 06:05 AM
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HAH! Thanks Dutch.
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post #14 of 19 (permalink) Old Jan 11th, 02, 07:45 AM
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Thanks for the info Everett

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David
I don't suffer from insanity.....I enjoy every minute of it!
'67 & '68 camaro SS (1:18)
'69 camaro RS/SS (1:18)
'70 chevelle SS blown (1:18)
only $2000 away from a '67 RS (1:1)

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post #15 of 19 (permalink) Old Jan 11th, 02, 10:06 AM
 
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Don't forget that the 12 bolt is very common in 69-72 Chevy/GMC 1/2 ton trucks and Blazers. Not sure if tube diameter/casing is the same as a car ...but it might be..and if you were going to cut one anyway, they can be found cheap. A lot of the truck guys sell them to install a 14 bolt. I did, and sold the 12 bolt for $200. May want to check places like ColoradoK5.com forum under parts for sale/wanted. Good luck. JT
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