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Camaro Research Group Discussion => General Discussion => Topic started by: motorhead848 on February 10, 2021, 04:49:35 AM

Title: 12A Z28 and date codes
Post by: motorhead848 on February 10, 2021, 04:49:35 AM

i recently acquired a 12A RS/Z with engine assembly of 11/21/68. so i would say its a relatively early car. the unfortunate part of the car is it is missing many of the dated accessories. my question is how early is too early? are September parts too early for this car or is acceptable? in the case of the wheels, i believe i need AD wheels and the only date ive found are september dates. is this the only known batch for the AD wheels?

thanks for any input.   

Title: Re: 12A Z28 and date codes
Post by: BULLITT65 on February 10, 2021, 05:11:27 AM

my 10B (early) 69 LA Z has AD wheels dated 8-20. Perhaps other guys can chime in if they have later dates.

Title: Re: 12A Z28 and date codes
Post by: jdv69z on February 10, 2021, 04:16:19 PM

My 10B Z  has 9-20 AD Wheels. I'm pretty sure there are other dates after though. I also know there is an August date.

Title: Re: 12A Z28 and date codes
Post by: z28z11 on February 10, 2021, 05:20:28 PM

Quote from: motorhead848 on February 10, 2021, 04:49:35 AM

i recently acquired a 12A RS/Z with engine assembly of 11/21/68. so i would say its a relatively early car. the unfortunate part of the car is it is missing many of the dated accessories. my question is how early is too early? are September parts too early for this car or is acceptable? in the case of the wheels, i believe i need AD wheels and the only date ive found are september dates. is this the only known batch for the AD wheels?

thanks for any input.   

Depends on the "accessory" - my 01C X77 has one August dated exhaust manifold, and the same for the flywheel. Starter and distributor are December, Holley is November, undated and no part #772 fan, early January fan clutch. All 5 original wheels are YH, as the car is well past the mid-December YH introduction.

Regards,
Steve

Title: Re: 12A Z28 and date codes
Post by: firstgenaddict on February 10, 2021, 06:56:16 PM

There is a late Oct date for AD wheels, my 10D car had four 9/20 wheels when purchased, however while looking for a single I ran across a couple of LATE Oct wheels which I thought were too close to the build date to have been on the car.

Title: Re: 12A Z28 and date codes
Post by: 69Z28-RS on February 11, 2021, 01:06:41 AM

I had a 10-24 AD wheel, which I traded for a YH with my date...

Title: Re: 12A Z28 and date codes
Post by: HOT3O2 on February 11, 2021, 02:29:40 AM

My 12B Z has the 10-24 AD’s. Those were the last AD’s made.

Title: Re: 12A Z28 and date codes
Post by: motorhead848 on February 11, 2021, 05:01:45 AM

thanks guys for the reply's. sounds like 2 months is about my window for parts?

Title: Re: 12A Z28 and date codes
Post by: MO on February 11, 2021, 10:11:11 PM

Jerry MacNeish's informative fact book on 69 Z/28's would be a good tool for you. 

http://z28camaro.com/publications/

Title: Re: 12A Z28 and date codes
Post by: motorhead848 on February 12, 2021, 03:56:22 AM

its is a great book. refer to it a lot. but unfortunately it just has general Z data. not a bunch of comparing from early to late unless its spoilers or hoods or exhaust ect.

Quote from: MO on February 11, 2021, 10:11:11 PM

Jerry MacNeish's informative fact book on 69 Z/28's would be a good tool for you. 

http://z28camaro.com/publications/

Title: Re: 12A Z28 and date codes
Post by: KurtS on February 12, 2021, 08:45:46 PM

Most components would be Oct/Nov, favoring Nov.

Title: Re: 12A Z28 and date codes
Post by: JKZ27 on February 20, 2021, 11:41:48 AM

My early 12B SS has an 11/21 engine and 10/19 XT wheels.