66 12-bolt value - Chevelle Tech
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post #1 of 8 (permalink) Old Dec 8th, 19, 10:44 PM Thread Starter
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66 12-bolt value

I have a 66 A-body 12-bolt in great shape, no pits, clean steel painted black, currently under a driving A-body. It is originally a 3.73 posi rear. I have the original Chevy posi case and axles, but have upgraded the axles to Moser C-Clip axles and a newer 400 lb Eaton posi case is also installed. It also has an original Tomazewski (TA Performance) aluminum cover girdle with preload bolts for the bearing caps. The gears are original Chevrolet. The casting number is 3875745 N. The axle tube stamping is CI 0331 B with an E under it. Looks like a 66 Chevelle rear from '66, assembled in Buffalo on March 31, 1966.
Can anyone give me a value range for this piece? Thank you. Pat
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post #2 of 8 (permalink) Old Dec 9th, 19, 6:50 AM
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Re: 66 12-bolt value

I sold one earlier this year. the code was 3.31 posi, but sometime in the past a set of 3.50 (yes 3.50 35 ring gear, 10 pinion) gears were installed. I got $1400 for it. Buyer had a numbers matching 66 that was missing the original 12 bolt a d was specifically looking for a early dated housing. jim


70 chevelle, SS clone 454 4 speed 3.31 12 bolt posi
71 camaro. (owned since 1978!) 454-th400 3.07 12 bolt
66 chevelle 350 4 speed 3.55 12 bolt and a newly added 142 wieand blower
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post #3 of 8 (permalink) Old Dec 9th, 19, 8:27 AM
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Re: 66 12-bolt value

X2 ^^. Possibly more to the right buyer. Good Luck.

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post #4 of 8 (permalink) Old Dec 9th, 19, 9:10 AM
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Re: 66 12-bolt value

Makes me feel great after paying 1200 for a rebuilt one 14 years ago

1966 Chevelle SS 396/360 M21 3:73 posi. silver/blue buckets

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post #5 of 8 (permalink) Old Dec 9th, 19, 11:41 AM
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Re: 66 12-bolt value

The numbers above are in the ballpark, but where you live will be a factor. If you live in a large urban area with a lot of potential buyers you will likely get more, if you are located in the middle of nowhere you will likely get significantly less.

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post #6 of 8 (permalink) Old Dec 10th, 19, 1:44 AM
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Re: 66 12-bolt value

I paid $1200 for a 67 Chevelle correct 12 bolt 3.73 posi complete 2 years ago in Los Angeles
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post #7 of 8 (permalink) Old Dec 10th, 19, 6:58 AM
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Re: 66 12-bolt value

Depending on where you live. Pat what area are you in?

66 SS-396/425 - M22 -3:73 -12 bolt
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post #8 of 8 (permalink) Old Dec 10th, 19, 11:52 AM
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Re: 66 12-bolt value

I'd be interested in it if your west of the Mississippi.
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