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Author Topic: Z28 timing cover  (Read 972 times)
wisemanz28
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« on: July 05, 2011, 08:34:14 PM »

I've been looking for a timing chain cover for my 1969 Z28. My car is a 1st week of September built car. What date would work for my car?  How far out can I go?
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Stingr69
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« Reply #1 on: July 06, 2011, 10:43:26 AM »

I don't know that anyone has ever definatively decoded all of the timing cover date codes. Some look like a typical julian based date code system but there are covers out there that the numbers are obviously not julian based. Nobody can see them once they are installed and painted anyway.

Not much help I know.

-Mark.
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Kelley W King
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« Reply #2 on: July 06, 2011, 12:34:03 PM »

Most parts on my car are 2 to 3 weeks before the build date. But for that part you might want the engine build date instead of the car date.
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69 Z28 RS Scuncio Hi Performance
69 SS L78
67 SS Chevelle
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JohnZ
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« Reply #3 on: July 06, 2011, 01:59:21 PM »

The '69 Z/28 timing covers I've seen are dated like "4 69" for April, 1969, not in a Julian format; don't know if or when that dating format started or stopped.
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'69 Z/28
Fathom Green
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68camaroz28
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« Reply #4 on: July 06, 2011, 02:42:08 PM »

The '69 Z/28 timing covers I've seen are dated like "4 69" for April, 1969, not in a Julian format; don't know if or when that dating format started or stopped.

Yep, have a timing cover off a 67 model year HP 327 and its stamped "3 67" (March, 67). All the ones I have seen are month and year. Seemed many were stamped and many were not!?!?  But as Mark mentioned identifying the date code would be extremely difficult once on the car. Heck, I could not  see one even with the timing cover off the car until I sanded the area to remove paint. Sheet metal stamping is not deep in nature.
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Chick
68 Z/28 NOR 01B Orig motor/trans/rear
69 Z/28 NOR 07A Orig Block & GM Cross-ram/carbs
69 L34 Rest. Nova Father/Son Car
69 L78 Surv Nova Purch 4/69 31K miles
67 L89 Corv Tribute
68 Corv 427/400 Orig motor
07 Corv Z06
R 68Z build- http://www.camaros.net/forums/showthread.php?t=182584
Ed Bertrand
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« Reply #5 on: July 06, 2011, 03:18:42 PM »

Also note that the timing chain cover was installed at the engine plant, so you should look for a date before the engine build, not the car asembly date.

Ed
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KurtS
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« Reply #6 on: July 09, 2011, 10:30:27 PM »

I have some that have a different format. I'll have to dig them out again....
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Kurt S
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68camaroz28
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« Reply #7 on: July 21, 2011, 07:20:27 AM »

The '69 Z/28 timing covers I've seen are dated like "4 69" for April, 1969, not in a Julian format; don't know if or when that dating format started or stopped.

Yep, have a timing cover off a 67 model year HP 327 and its stamped "3 67" (March, 67). All the ones I have seen are month and year. Seemed many were stamped and many were not!?!?  But as Mark mentioned identifying the date code would be extremely difficult once on the car. Heck, I could not  see one even with the timing cover off the car until I sanded the area to remove paint. Sheet metal stamping is not deep in nature.
Here's the March 67 one we have.
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Chick
68 Z/28 NOR 01B Orig motor/trans/rear
69 Z/28 NOR 07A Orig Block & GM Cross-ram/carbs
69 L34 Rest. Nova Father/Son Car
69 L78 Surv Nova Purch 4/69 31K miles
67 L89 Corv Tribute
68 Corv 427/400 Orig motor
07 Corv Z06
R 68Z build- http://www.camaros.net/forums/showthread.php?t=182584
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