:) could any one tell me the year they started putting rear disk brakes on a g.m 12 - bolt . either optioned or standard . since the parts store guys havent a clue on which year to order . i am looking to change over my 1969 12 bolt g.m , from drum to discs . any info appreciated

I believe the 12 bolt came with the JL 8 option in the 69 camaros. Good luck finding parts at a parts store. I think that option was very expensive and very rare even when it was new. Better option is to use WS6 trans am disc brake parts. I think it was 80 81 that they were available from pontiac. Jim

If you want the Camaro rear disc setup, its about $15k (if you can find one used). Better approach would be an aftermarket setup. Just get any of the car mags like Streetrodder, etc. Lots of vendors. Or google the Internet.

:) could any one tell me the year they started putting rear disk brakes on a g.m 12 - bolt . either optioned or standard . since the parts store guys havent a clue on which year to order . i am looking to change over my 1969 12 bolt g.m , from drum to discs . any info appreciated


Here ya go. :thumbsup: I put these on my 55 Chebby and they work awesome. Also running disc on the back eliminates the need for C-clip eliminators.
http://ecihotrodbrakes.com/early_chevy_discbrake_conversions.html
http://ecihotrodbrakes.com/rear_discbrake_conversions.html

from crg....

JL8 4-Wheel Disc Brakes - Available on '69 high- performance Camaro's. Installed mostly on Z-28 Camaro's, but technically available on any model. 205 known to be produced. A similar Heavy-Duty Service Option disc-brake rear axle was available over-the-counter but differed from JL8 in the details.

:thumbsup: thanks for all the info guy's , finally getting somewhere . i checked that site you gave me chris , one thing i can't understand is ; why they would'nt make the the caliper brackets & calipers for 79 to 81 t/a , to match the rotors ? , or all eldorado/seville the same . why the oddball matching ? . question for jim mack , if you please , you stated WS6 t/a parts , would you think if i ordered 79 to 81 t/a parts from g.m , or other , for just the [brackets] , that they would have them ? . what i'm trying to do is match all four rotors the same for looks & also slotted & drilled . or go to the boneyard & look for 79 to 81 t/a parts or ; seville/eldo calipers & t/a rotors ? . much appreciated - tommy

Here is a pic of my caliper if you can see it. Looks just like the finned Corvette style. Chris
http://i35.tinypic.com/107rsw1.jpg

I really cant tell you about the t/a rear disc swap. you could go to nastyZ28.com and ask in the brake forum. Im sure they can tell you availabilty etc. jim