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Old Mar 26, 2022 | 08:22 PM
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Default Date Code For Jack

I have a 76 Vette just pulled out jack #548. Does anyone know if this is original to the car? Can you help me decipher date code please? Thanks in advance.

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Old Mar 26, 2022 | 09:49 PM
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1976 date stamp on rivet (year & week). 48th week of 1975 so Nov. 24, 1975 to Nov. 30, 1975. SMP stamped on bottom (Seeburn Metal Products)

Last edited by KingRat; Mar 26, 2022 at 09:56 PM.
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Old Mar 26, 2022 | 11:00 PM
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Mine is 614 and it was built on April 29th, the 16th week of '76.
Was yours built in Dec. '75? Trim tag would be E with the number around 15, I'm guessing...
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Old Mar 27, 2022 | 05:21 AM
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Originally Posted by VanHalenFan
I have a 76 Vette just pulled out jack #548. Does anyone know if this is original to the car? Can you help me decipher date code please?
Jack suppliers changed in 76 from Ausco (A) to Stant Manufacturing Products (SMP) as well as the date code format. The SMP jacks used the three digits as your jack shows with 5 = year and 48 = week assembled. It should have an SMP on the bottom for a Nov/Dec 1975 assemble jack, The jack date code tells us your trim tag date code should be a 76 is an early build...75ish.

Hope this helps!
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Old Mar 27, 2022 | 12:41 PM
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Thanks for the information. Appreciate it.
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Old Mar 27, 2022 | 12:46 PM
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Thank you for responding. So it looks like jack is 48th week in 1975 which is Nov 24th. That's what I needed.
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Old Mar 27, 2022 | 01:11 PM
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Looks like my car was manufactured 2/76. Which means this is the original jack that came with the car. That's what I needed to know. Thanks again.

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Old Mar 27, 2022 | 01:36 PM
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You can get the build date from your trim tag located below the left windshield pillar.
Look to the right of Chevrolet at the top of the tag.
If it was built in Feb there should be a letter G followed by the date it was built.
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Old Mar 27, 2022 | 02:20 PM
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Originally Posted by VanHalenFan
Looks like my car was manufactured 2/76. Which means this is the original jack that came with the car. That's what I needed to know. Thanks again.
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Old Mar 27, 2022 | 02:29 PM
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Thanks
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Old Mar 27, 2022 | 06:45 PM
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So, is it Stant or Seeburn who made them. Anyone know for sure?
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Old Mar 28, 2022 | 04:33 AM
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Originally Posted by 62corvette
So, is it Stant or Seeburn who made them. Anyone know for sure?
Stant! Never heard of Seeburn
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Old Mar 28, 2022 | 08:51 PM
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Originally Posted by SEVNT6
Mine is 614 and it was built on April 29th, the 16th week of '76.
Was yours built in Dec. '75? Trim tag would be E with the number around 15, I'm guessing...
my jack is original 75 but I don’t understand the markings

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Old Mar 28, 2022 | 11:43 PM
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'75s didn't have the stamp on the rivet. Or the week made.
The number was the year, 5 for '75. Of sort of 5 in your case.
And the letter was the month, A for January.
When GM did it this way the letter I wasn't used, so September is J & December M...

Last edited by SEVNT6; Mar 29, 2022 at 01:54 AM.
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