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Author Topic: June 69 Z28 Tachs  (Read 1368 times)
Mark
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« on: May 27, 2014, 11:42:16 AM »

Anyone have a Z28 with a 6K redline/7K top of scale tach in an 06a built norwood Z?  I know they should have been 6K/8K by then, trying to see if there was a shortage of the 8K versions in mid to late June, or if a tach was just swapped with an incorrect one.
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Mark C.
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« Reply #1 on: May 27, 2014, 02:26:13 PM »

My 06A 653104 has a 6x8 tach.
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GaryC

'UNRESTORED' 1969 Cortez Silver X33D80 Z28
Larry Gibson
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« Reply #2 on: May 28, 2014, 07:24:46 AM »

I don't have any way of determining if my 06A came from the factory this way but it had a 5500 redline with 7000 rpm limit tach when I bought the car over 30 years ago. Last year I changed it out for a 6x8 reproduction. Also last year I pulled the engine & trans to fix a rear main seal leak and to do some cleanup under the hood and documented every part & part number and found most everything to be the correct  part number and date code. So my car could very well have left the factory with an incorrect tach. No way of knowing for sure.

Larry
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427-KING
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« Reply #3 on: May 28, 2014, 08:15:10 AM »

My 09D [Sept 1969 late] survivor Z28  has a 6000/7000 and I have also verfied from the original owner that it was never changed. It also has a Jan 20 69 dated  1111480.
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69Z28-RS
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« Reply #4 on: May 28, 2014, 09:06:51 AM »

My 09D [Sept 1969 late] survivor Z28  has a 6000/7000 and I have also verfied from the original owner that it was never changed. It also has a Jan 20 69 dated  1111480.

Doesn't your tach have a date stamped on the back??   What is that date?
(My 09C Z28 has a 6000/8000 tach and has the date on the back of it...)
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Gary W.  /  69Z28-RS, 72 B 720 cowl console rosewood all tint
69 Corvette convertible, silver/black 350 hp,
60 Corvette white/red, 72 Corvette coupe (2), 
90 ZR1 red/red #246, 90 ZR1 white/gray #2466
72 El Camino, '55 Nomad, '57 Nomad, '57 B/A Sedan
ban617
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« Reply #5 on: May 28, 2014, 04:05:28 PM »

my 03 D has a 6 X 8 tach. My buddies 01 C has a 6 X 7 tach
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rszmjt
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« Reply #6 on: May 30, 2014, 12:39:11 AM »

My Norwood 06A ( June 18) has a 6000/8000. owned the car since 74.

 Just recently restored a  02B LA Z28, and it had the same 6000/8000.
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z28z11
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« Reply #7 on: May 30, 2014, 10:26:16 AM »

Pics of the 6-8K I sold (stupidly) some time back. January '69 dated, it would have been perfect for my (non-gauge) X77, but monetary needs took precedence -

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1968 Z28 BRG/W
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paceme
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« Reply #8 on: May 30, 2014, 10:30:47 AM »

My 9A has a 6000/7000 .
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Steve Shauger
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« Reply #9 on: May 30, 2014, 07:03:38 PM »

Pics of the 6-8K I sold (stupidly) some time back. January '69 dated
Curious how you decode that date? Looks like '189', or is that ink stamp not the date code?
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Tim - 04A VN '69 z/28 69-69 715 ex-E/MP
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« Reply #10 on: May 30, 2014, 07:44:18 PM »

The Julian date and the last digit of the year I think if I remember right. so the 18th day of 1969 Jan 18.
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« Reply #11 on: May 31, 2014, 12:52:03 AM »

The Julian date and the last digit of the year I think if I remember right. so the 18th day of 1969 Jan 18.
Thanks Brian, makes sense. So tach date codes would be either 3-digits (up to 2nd week in April or so), then 4-digits.
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Tim - 04A VN '69 z/28 69-69 715 ex-E/MP
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« Reply #12 on: May 31, 2014, 08:21:38 PM »

My 9A has a 6000/7000 .

9A of 68 or 69?
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paceme
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« Reply #13 on: June 01, 2014, 04:21:01 AM »

My 9A has a 6000/7000 .

9A of 68 or 69?

1969
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Steve Shauger
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« Reply #14 on: June 01, 2014, 09:25:40 AM »


Steve,

Do you know the date on the back of it?  I thought they had switched to the 6000/8000 well before Sept??
My 09C car has an 8K tach; date on the back of it is '197 69'   which corresponds to July 16, 1969.  This is consistent with most other parts on my car, except for a few dated almost immediately in front of the engine assembly...  see photos.
ps.  I also noticed there's a label on the instrument cluster itself with large NN code (any idea what this is for?).. along with a speedo pn, and tach (with hand note - illegible unless it might be '8')??

Gary
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Gary W.  /  69Z28-RS, 72 B 720 cowl console rosewood all tint
69 Corvette convertible, silver/black 350 hp,
60 Corvette white/red, 72 Corvette coupe (2), 
90 ZR1 red/red #246, 90 ZR1 white/gray #2466
72 El Camino, '55 Nomad, '57 Nomad, '57 B/A Sedan
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« Reply #15 on: June 02, 2014, 04:21:30 AM »

Interesting that the ink date code stamp is 3 digits (189) on the first tach pictured, and 5 digits (197 69) on Gary's tach. Is that a format change during production, or is the first one possibly missing the '69'?
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Tim - 04A VN '69 z/28 69-69 715 ex-E/MP
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« Reply #16 on: June 02, 2014, 08:12:44 AM »

That is interesting.... Steve's 7K tach from his late 09A car had a julian date of 189 (no year?)...  which is different than my 8K tach on my 09C car which has a date of 197 (69)..  His tach was either built 8 days before mine, but with different redline and different date coding, OR was it left over from July of '68?? and used in Sept '69?  Is that possible?  OR were there more than a single vendor involved for these tachs??   I cannot believe the same vendor was building two different designs to the same spec at the same time... such a company would not be in business very long...
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Gary W.  /  69Z28-RS, 72 B 720 cowl console rosewood all tint
69 Corvette convertible, silver/black 350 hp,
60 Corvette white/red, 72 Corvette coupe (2), 
90 ZR1 red/red #246, 90 ZR1 white/gray #2466
72 El Camino, '55 Nomad, '57 Nomad, '57 B/A Sedan
paceme
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« Reply #17 on: June 02, 2014, 10:48:39 AM »


Steve,

Do you know the date on the back of it?  I thought they had switched to the 6000/8000 well before Sept??
My 09C car has an 8K tach; date on the back of it is '197 69'   which corresponds to July 16, 1969.  This is consistent with most other parts on my car, except for a few dated almost immediately in front of the engine assembly...  see photos.
ps.  I also noticed there's a label on the instrument cluster itself with large NN code (any idea what this is for?).. along with a speedo pn, and tach (with hand note - illegible unless it might be '8')??

Gary

Steve,

Do you know the date on the back of it?  I thought they had switched to the 6000/8000 well before Sept??
My 09C car has an 8K tach; date on the back of it is '197 69'   which corresponds to July 16, 1969.  This is consistent with most other parts on my car, except for a few dated almost immediately in front of the engine assembly...  see photos.
ps.  I also noticed there's a label on the instrument cluster itself with large NN code (any idea what this is for?).. along with a speedo pn, and tach (with hand note - illegible unless it might be '8')??

Gary

Gary, I've never looked for the date code on the tach. I know the tach is "technically" incorrect, but I'm not sure why or how it happened. If the date code doesn't correlate to the build date of the car then it may have been replaced at some point. I believe the 7k was in the car when I purchased it because I vaguely remember comparing it to my friends other Z's in the late 70's. I'll get the date and post it later...
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Steve Shauger
Vintage Certification™ Program, Providing Recognition And Status To Unrestored Vehicles. Website www.vintagecertification.com
69Z28-RS
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« Reply #18 on: June 02, 2014, 12:17:44 PM »


Paceme (Steve) wrote:
Gary, I've never looked for the date code on the tach. I know the tach is "technically" incorrect, but I'm not sure why or how it happened. If the date code doesn't correlate to the build date of the car then it may have been replaced at some point. I believe the 7k was in the car when I purchased it because I vaguely remember comparing it to my friends other Z's in the late 70's. I'll get the date and post it later...
-----------------
Steve,
It's going to be difficult to see I think when the car is assembled..  mine is apart, so it's easy for me to check such things.  Maybe (if you're limber/flexible), it might be viewable from below the instrument panel?  but if you can't .. don't worry it until it's easier.
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Gary W.  /  69Z28-RS, 72 B 720 cowl console rosewood all tint
69 Corvette convertible, silver/black 350 hp,
60 Corvette white/red, 72 Corvette coupe (2), 
90 ZR1 red/red #246, 90 ZR1 white/gray #2466
72 El Camino, '55 Nomad, '57 Nomad, '57 B/A Sedan
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