Narrowing a Impala 12 bolt for my 1969 Camaro - Page 2 - Team Camaro Tech
Transmission & Driveline Transmissions and Differentials

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post #16 of 24 (permalink) Old Oct 19th, 19, 01:11 PM
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Any car 12 bolt. Truck 12 bolt is different.

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1969 x-77 Z/28 orange/ white stripes, named by my daughter "Clementine ", M-22 close ratio, 4:10 12 bolt, CE 302. Hugger orange with white stripes. White standard interior. Restoration complete May 2018
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post #17 of 24 (permalink) Old Oct 20th, 19, 09:04 PM
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Re: Narrowing a Impala 12 bolt for my 1969 Camaro

Aww.

I thought maybe this thread would follow Chevy's brake guys path from 1967 and turn a B car 12 bolt into a disc brake rear end.
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post #18 of 24 (permalink) Old Oct 21st, 19, 08:29 PM
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Re: Narrowing a Impala 12 bolt for my 1969 Camaro

Same here. Will all 12 bolt cars work? I don't really have a walk and pick your part place. I have to call and they check if they have what I need. Any list of cars that would have a 12 bolt that would still be in a salvage yard?

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post #19 of 24 (permalink) Old Oct 22nd, 19, 05:44 AM
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Re: Narrowing a Impala 12 bolt for my 1969 Camaro

The car 12 bolt was only made from '65 to '72, and the Chevelle is the only car that got it after '70, so they are not easy to find, and none of them are cheap.

'69 RS/SS396 pro street/427/4spd/9"

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post #20 of 24 (permalink) Old Oct 22nd, 19, 03:14 PM Thread Starter
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Re: Narrowing a Impala 12 bolt for my 1969 Camaro

I watched the want ads for almost a year before I found one. I purchased a Eaton Posi, US Gears gear set, a pair of Toms Differential KA axles and installation kit. With the new axle tube ends and perches it comes to around $1400 give or take. A fellow in my area had a 1967 Camaro 12 bolt for sale for about $1500. Problem was it had a spool and c-clip eliminators which I didn't want. I admit, this is a pain in the butt. It would be a lot easier to buy a Moser ready made 12 bolt. I have watched the want ads and gone to the swap meets and have only seen a couple of Camaro 12 bolt axles come up for sale in my area over the years. There are two 8.5 Nova Axles for $200.00 in my area they cant seem to give away.
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post #21 of 24 (permalink) Old Oct 22nd, 19, 03:24 PM
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Re: Narrowing a Impala 12 bolt for my 1969 Camaro

My take on it.

If you go the Impala route. Does it already have a posi unit. Is the posi in good shape or will it need a rebuild? Does it have the gears you want? If not will the carrier work with the gears you want.

Cutting, welding, axles, posi, gear change if you need it all what are you really going to save,

I hate rear end issues. I always go new with warranty. I bought a 12 Bolt complete ready to bolt in for the 66 Chevelle i built last year, JD Race about $2500 shipped. Extremely pleased with it.

Usually on my Protour Cars I use Ford 9". Cheaper than a 12 Bolt and I like that you can pull the pumpkin.
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post #22 of 24 (permalink) Old Oct 23rd, 19, 12:01 PM
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Re: Narrowing a Impala 12 bolt for my 1969 Camaro

Over the years I have had probably a dozen or so Impala big car rear ends cut down to fit Camaro's and early nova's usually depending on the rear end date code so they were "Right" - early 12 bolts had the bigger 7/8" fill plugs and later had the 1/2" installed either mono or multi perches and sold them off - I do have one still fits 68-69 Camaro with multileafs . I used to be able to buy complete 12 bolts for about $100 and the guy charged like $175 to cut off brackets , weld new ends and perches so ready to assemble ahh the good ole days

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post #23 of 24 (permalink) Old Oct 24th, 19, 05:41 PM Thread Starter
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Re: Narrowing a Impala 12 bolt for my 1969 Camaro

Question for Freddie. Before I went the Impala 12 bolt route I was looking at Dana 60 rear ends. There always seems to be some around with posi geatsets for sale. My question is, how tough would it be to modify one to use under a first generation Camaro? More specifically, what axle ends, axle bearings, and what to do about axles. Thanks, Brent
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post #24 of 24 (permalink) Old Oct 24th, 19, 07:50 PM
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Re: Narrowing a Impala 12 bolt for my 1969 Camaro

The Dana 60 isn't any harder to put under a Camaro than any other non original rear end. They are very tough. You can use Moser axles and housing ends with the 9 inch Ford bearings. Just be sure that the differential has 33 splines or you will have to buy one of those too. The 60 was built with many different number of splines.

'69 RS/SS396 pro street/427/4spd/9"

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