Author Topic: Correct A6 casting number for early '67 Camaro?  (Read 993 times)

67 nut

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Correct A6 casting number for early '67 Camaro?
« on: April 06, 2017, 05:03:29 AM »
Was there a specific casting mold number used on '67 A6 Camaro compressors (rear backing plate)?  Different casting molds for different GM models?  I have a 6555302 casting dated (H 16 6) (August) and a 6556406 casting dated (K 27 6) (November).  My build is 11B.  I know the 406 casting is beyond my build date, but here are two compressors within a couple months of each other, with different casting back plate numbers.  Also as a note, the front castings only have casting dates.  The AIM calls for a model number 6550133 (which was just a sticker on an A6).

There is ample documentation of engine block and head casting numbers, but I'm searching for correctness in compressors. Also, were the 1966 compressor castings used for early 1967 model vehicles, just as the 1966 engine castings were used for the early '67 models?


Steve  '67 RS convertible, factory a/c, parchment interior

bc69

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Re: Correct A6 casting number for early '67 Camaro?
« Reply #1 on: April 08, 2017, 04:37:42 PM »
Mine is a 12c L48 with a 6555302. Having trouble finding date code.
Brad
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Petes L48

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Re: Correct A6 casting number for early '67 Camaro?
« Reply #2 on: April 09, 2017, 03:31:47 PM »
The date code would be just below the two holes where the manifold fitting connects.  It may even be covered by the manifold.  It would take a flashlight, inspection mirror, and contortionist skill to try and read it if mounted on the car.

bc69

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Re: Correct A6 casting number for early '67 Camaro?
« Reply #3 on: April 09, 2017, 03:39:22 PM »
k156 was code on ours.
Still have trouble with posting pics.
I always take HD pics and have trouble cutting down file size.
Brad
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bc69

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Re: Correct A6 casting number for early '67 Camaro?
« Reply #4 on: April 09, 2017, 03:45:01 PM »
Not sure on the casting number seqence as our 6555302 is just 12 days? (K156) before your 6556506 (K276).
Brad
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67 nut

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Re: Correct A6 casting number for early '67 Camaro?
« Reply #5 on: April 11, 2017, 01:18:47 AM »
That's what makes me wonder if there were different casting numbers for different models.
Steve  '67 RS convertible, factory a/c, parchment interior