Author Topic: 67-69 Bumper Jack Design  (Read 19650 times)

stovebolt

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Re: 67-69 Bumper Jack Design
« Reply #30 on: April 17, 2015, 01:39:51 PM »
Data from my 1968 two owner survivor:

Plant: NOR
Model Year: 68
Body Plate Build Date: 04A
Jack Mast Section: trapezoidal
Jack Base: no stampings
Mast Date Code: rivet, 8C

ZLP955

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Re: 67-69 Bumper Jack Design
« Reply #31 on: April 17, 2015, 10:36:51 PM »
Thanks stovebolt!
Tim - 04A VN '69 z/28 69-69 715 ex-E/MP

ZLP955

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Re: 67-69 Bumper Jack Design
« Reply #32 on: April 18, 2015, 03:23:00 AM »
Updated data:

Plant: LOS
Model Year: 69
Body Plate Build Date: 09D (1968)
Jack Mast Section: square
Jack Base: nothing stamped
Mast Date Code: mast, 8J

Plant: NOR
Model Year: 68
Body Plate Build Date: 04D
Jack Mast Section: trapezoidal
Jack Base: (to be confirmed)
Mast Date Code: rivet, 8D

Plant: NOR
Model Year: 69
Body Plate Build Date: 03B
Jack Mast Section: trapezoidal
Jack Base: U69
Mast Date Code: rivet, 9C

Plant: LOS
Model Year: 68
Body Plate Build Date: 02E
Jack Mast Section: square
Jack Base: nothing stamped
Mast Date Code: mast, 8B

Plant: NOR
Model Year: 69
Body Plate Build Date: 08E (1969)
Jack Mast Section: trapezoidal
Jack Base: nothing stamped
Mast Date Code: rivet, 9G
(Note: VE3 load rest)

Plant: NOR
Model Year: 69
Body Plate Build Date: 09C (1969)
Jack Mast Section: trapezoidal
Jack Base: U69
Mast Date Code: rivet, 9H

Plant: NOR
Model Year: 68
Body Plate Build Date: unknown
Jack Mast Section: trapezoidal
Jack Base: unknown
Mast Date Code: rivet, 8D

Plant: LOS
Model Year: 68
Body Plate Build Date: 02C
Jack Mast Section: square
Jack Base: nothing stamped
Mast Date Code: mast, 8 1

Plant: NOR
Model Year: 69
Body Plate Build Date: 11D (1968)
Jack Mast Section: trapezoidal
Jack Base: U69
Mast Date Code: rivet, 8L
(note: convertible, space saver)

Plant: NOR
Model Year: 68
Body Plate Build Date: 04A
Jack Mast Section: trapezoidal
Jack Base: no stampings
Mast Date Code: rivet, 8C
Tim - 04A VN '69 z/28 69-69 715 ex-E/MP

KurtS

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Re: 67-69 Bumper Jack Design
« Reply #33 on: April 22, 2015, 06:04:40 PM »
I find that hard to read/interpret.
Is this better? Organized by date and plant and on one-line:
68
LOS 02C - square, 81 on the mast.  Base - blank.
LOS 02E - square, 8B on the mast.  Base - blank.

NOR 04A - trapezoid, 8C on rivet.  Base - blank.
NOR 04D - trapezoid, 8D on rivet.  Base tbd.
NOR  ? ? - trapezoid, 8D on rivet.  Base n/a.

69:
LOS 09D - square, 8J on the mast.  Base - blank.

NOR 11D - trapezoid, 8L on rivet.  Base U69.  (note: convertible, space saver)
NOR 03B - trapezoid, 9C on rivet.  Base U69.
NOR 08E - trapezoid, 9G on rivet.  Base - blank. VE3 load rest
NOR 09C - trapezoid, 9H on rivet.  Base U69.
« Last Edit: April 25, 2015, 05:16:54 AM by KurtS »
Kurt S
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1968RSZ28

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Re: 67-69 Bumper Jack Design
« Reply #34 on: April 22, 2015, 06:37:45 PM »
I find that hard to read/interpret.
Is this better? Organized by date and plant and on one-line:

Yes, much better.  :)

In seconds you can see that so far all the LOS cars have square mast that are dated on the mast, while the NOR cars have trapezoid mast with dates on the rivets.  Also, so far all the LOS cars have blank bases.

Paul

69Z28-RS

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Re: 67-69 Bumper Jack Design
« Reply #35 on: April 22, 2015, 07:48:07 PM »
Very good Kurt!   We knew there was a reason you were boss... :)
Gary W / 09C 69Z28-RS, 72 B 720 cowl console rosewood tint
69 Corvette convertible, silver/black 350 hp,
60 Corvette white/red, 72 Corvette coupe, '70 Mach I 
90 ZR1 red/red #246, 90 ZR1 white/gray #2466
72 El Camino, '55-'56-'57 Nomads, '55-'57 B/A Sedan

ZLP955

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Re: 67-69 Bumper Jack Design
« Reply #36 on: April 22, 2015, 10:19:41 PM »
Thanks, I am working on the spreadsheet so hadn't sorted the data yet. But maybe that format is clear enough, no point in confusing things unnecessarily.
Tim - 04A VN '69 z/28 69-69 715 ex-E/MP

x66 714

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Re: 67-69 Bumper Jack Design
« Reply #37 on: April 23, 2015, 01:10:40 AM »
Here's more jack information from a friends car. LA built 1969, 01b. Square, can only read 8 on the mast. No stampings on anything else...Joe
See America's First, Chevrolet

1968 Z/28 Corvette Bronze. Black Hounds Tooth. 02E Los Angeles born 3/13/1968 pnt OO. Purchased March 1976
1969 SS396 Yellow/Yellow 08E Norwood born 8/28/1969 pnt 76E. Purchased April 1981

My68SS

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Re: 67-69 Bumper Jack Design
« Reply #38 on: April 30, 2015, 12:40:13 PM »
I'm following this thread with much interest.
I assume the correct length for all 67 - 69 jacks is 32 1/2"?
Also, what about hooks that are stamped on the face side ilo the underside, like in this post, or is face side stamping re-pop?
http://www.camaros.org/forum/index.php?topic=3681.msg24131#msg24131
Rob
1968 12C SS
L34/M40
12 bolt posi 3.55

Mike S

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Re: 67-69 Bumper Jack Design
« Reply #39 on: May 01, 2015, 03:25:24 AM »
Here are the jacks from my two 67's. No dates on the rivets but it does exist on the masts.
Interesting how the LOS and NOR differ. The LOS car mast looks to be zinc and the NOR mast looks to be zinc dichromite.

Mike
67 LOS SS/RS L35 Hardtop - Original w/UOIT
67 NOR SS/RS L35 Convertible - Under restoration

ZLP955

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Re: 67-69 Bumper Jack Design
« Reply #40 on: May 01, 2015, 09:31:19 AM »
Thanks Mike. Now we have some 67 data:

67
LOS 04B - square, 7D on the mast. Base - blank

NOR 05 - trapezoid, no date on rivet. Base U

68
LOS 02C - square, 81 on the mast.  Base - blank.
LOS 02E - square, 8B on the mast.  Base - blank.

NOR 04A - trapezoid, 8C on rivet.  Base - blank.
NOR 04D - trapezoid, 8D on rivet.  Base tbd.
NOR  ? ? - trapezoid, 8D on rivet.  Base n/a.

69:
LOS 09D - square, 8J on the mast.  Base - blank.

NOR 11D - trapezoid, 8L on rivet.  Base U69.  (note: convertible, space saver)
NOR 03B - trapezoid, 9C on rivet.  Base U69.
NOR 08E - trapezoid, 9G on rivet.  Base - blank. VE3 load rest
NOR 09C - trapezoid, 9H on rivet.  Base U69.
Tim - 04A VN '69 z/28 69-69 715 ex-E/MP

Mike S

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Re: 67-69 Bumper Jack Design
« Reply #41 on: May 01, 2015, 10:42:22 AM »
Hi Tim,
   The only date on the 05B NOR is on the mast itself and that appears to be CC07.
I don't know if the C is a double stamp to account for it appearing twice.

Mike
67 LOS SS/RS L35 Hardtop - Original w/UOIT
67 NOR SS/RS L35 Convertible - Under restoration

My68SS

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Re: 67-69 Bumper Jack Design
« Reply #42 on: May 01, 2015, 12:06:49 PM »
Interesting difference in the stamping on the load rest.
LOS - 'Camaro 1967' on the same line
NOR - 'Camaro' on one line with '1967 UN' on another line
Both of them stamped on the face side.

Not sure if that CC07 would qualify as a date code, can't really make sense of it, even if the C is a double, though a [maybe late] C is not too far from 05B, just don't understand the 0 in 07
So technically, not a case of 'no date on rivet', as that type of dimpled rivet head doesn't lend itself to having anything stamped on it.
Seems the NOR jack supplier at some stage changed the rivet to a flat head type and started stamping the date code there.
Rob
1968 12C SS
L34/M40
12 bolt posi 3.55

ZLP955

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Re: 67-69 Bumper Jack Design
« Reply #43 on: May 02, 2015, 01:07:55 AM »
Rob, I have seen other 67 NOR jacks that have a date stamp on the rivet as subsequent years, so maybe this was yet another supplier working to a similar trapezoid design? Let's try and get more 67 info.
Tim - 04A VN '69 z/28 69-69 715 ex-E/MP

ZLP955

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Re: 67-69 Bumper Jack Design
« Reply #44 on: May 02, 2015, 01:09:27 AM »
Update with minor corrections to previous post:

67
LOS 04B - square, 7D on the mast. Base - blank

NOR 05B - trapezoid, no date on rivet. Mast stamped CC07. Base U

68
LOS 02C - square, 81 on the mast.  Base - blank.
LOS 02E - square, 8B on the mast.  Base - blank.

NOR 04A - trapezoid, 8C on rivet.  Base - blank.
NOR 04D - trapezoid, 8D on rivet.  Base tbd.
NOR  ? ? - trapezoid, 8D on rivet.  Base n/a.

69:
LOS 09D - square, 8J on the mast.  Base - blank.
LOS 01B - square, 8 on the mast.   Base - blank.

NOR 11D - trapezoid, 8L on rivet.  Base U69.  (note: convertible, space saver)
NOR 03B - trapezoid, 9C on rivet.  Base U69.
NOR 08E - trapezoid, 9G on rivet.  Base - blank. VE3 load rest
NOR 09C - trapezoid, 9H on rivet.  Base U69.
« Last Edit: May 03, 2015, 02:43:21 AM by KurtS »
Tim - 04A VN '69 z/28 69-69 715 ex-E/MP