Author Topic: 1969 z28 Driveshaft (early build 10d)  (Read 9768 times)

asm69

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1969 z28 Driveshaft (early build 10d)
« on: November 03, 2007, 09:04:47 PM »
I am trying to decode the numbers that are cast into the end of my driveshaft.

The numbers are 3790024.

The chevrolet symbol is also cast under those numbers.

I also have found some yellow stripes towards the middle of the driveshaft that go around
the shaft itself.

Are the numbers, the chevrolet symbol, and the stripes consistent with an original
driveshaft.

The yoke ends are also offset.

I have included some pictures to help the decoding.

asm69

hihorse

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Re: 1969 z28 Driveshaft (early build 10d)
« Reply #1 on: December 23, 2007, 12:44:50 PM »
thanks for posting this, I am looking for info on a driveshaft for a 396/M20 car

hihorse

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Re: 1969 z28 Driveshaft (early build 10d)
« Reply #2 on: December 23, 2007, 04:54:25 PM »
Found driveshaft in my garage that supposedly came from early camaro with # 5675111 and E below. Any info is welcome.

69z28302

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Re: 1969 z28 Driveshaft (early build 10d)
« Reply #3 on: December 25, 2007, 03:57:53 PM »
I've never seen the casting numbers and emblem like that. That's wild
M&M

asm69

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Re: 1969 z28 Driveshaft (early build 10d)
« Reply #4 on: December 25, 2007, 08:26:06 PM »
What does M&M mean?

Maybe those casting numbers are GM? I don't know myself. As for the Chevrolet
symbol, I thought that was odd as well. That's why I posted the pictures I thought
that someone may know if the casting number is GM and if GM included the symbol
in the casting process.

asm69

69z28302

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Re: 1969 z28 Driveshaft (early build 10d)
« Reply #5 on: December 28, 2007, 01:44:10 AM »
What does M&M mean?

Maybe those casting numbers are GM? I don't know myself. As for the Chevrolet
symbol, I thought that was odd as well. That's why I posted the pictures I thought
that someone may know if the casting number is GM and if GM included the symbol
in the casting process.

asm69

M&M is my nickname @ work

hihorse

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Re: 1969 z28 Driveshaft (early build 10d)
« Reply #6 on: December 28, 2007, 02:32:10 AM »
There is driveshaft# 3945540 listed in assembly manual.

Dave69x33

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Re: 1969 z28 Driveshaft (early build 10d)
« Reply #7 on: December 29, 2007, 12:58:01 AM »
ams69,

I have the same question.  Hopefully someone can decipher the casting numbers.

Does any one know if these components are date coded? 

I have a Norwood 69Z built 1st week of May.  I have been holding off painting ID strips on my shaft until I can be sure if/what was done during my build date time frame.

One end my shaft (picture "Yoke 2"), I found the casting numbers roughly positioned as:
67 or 87?        924      (could not clearly make out a 67 or 87)
Chevy Bow Tie with an "M" in the middle of it, and 87-1 just to the right

The other yoke (picture "Yoke 1"):
05A     W C
258 with an oval and parallelogram symbols to the right.

The spline yoke (picture "Yoke"):
G 17?    54?   (could not clearly make out a 17 and 54)
IN         769



Dave69x33

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Re: 1969 z28 Driveshaft (early build 10d)
« Reply #8 on: December 29, 2007, 01:02:18 AM »
ams69,

By the way, how far down the shaft, from the centerline of the front yoke, is the stripe?  Then what is the width of your yellow stripe?

Thanks,



JohnZ

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Re: 1969 z28 Driveshaft (early build 10d)
« Reply #9 on: December 29, 2007, 05:10:27 PM »
ams69,

I have the same question.  Hopefully someone can decipher the casting numbers.

Does any one know if these components are date coded?

Those are forgings, not castings, and I've never seen any forging with a date code on it; forging dies were solid steel, with no provision to insert date markers. The ones with the Bow Tie are from Chevrolet-Detroit Forge, and the others are probably from Spicer or Dana.
« Last Edit: December 29, 2007, 05:13:35 PM by JohnZ »
'69 Z/28
Fathom Green
CRG

68Zproject

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Re: 1969 z28 Driveshaft (early build 10d)
« Reply #10 on: December 29, 2007, 05:15:42 PM »
?
68Z28

hihorse

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Re: 1969 z28 Driveshaft (early build 10d)
« Reply #11 on: January 01, 2008, 06:10:43 PM »
I am trying to decode the numbers that are cast into the end of my driveshaft.

The numbers are 3790024.

The chevrolet symbol is also cast under those numbers.



Are the numbers, the chevrolet symbol, and the stripes consistent with an original
driveshaft.

The yoke ends are also offset.

I have included some pictures to help the decoding.

asm69
If this is a original z28 driveshaft would the 1969 L78/M20/410 use the same driveshaft casting number 3790024? If not what would the Casting be?

asm69

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Re: 1969 z28 Driveshaft (early build 10d)
« Reply #12 on: January 02, 2008, 12:28:45 AM »
Dave69x33,

I measured the stripe from the centerline of the front drive shaft yoke (where the u-joint would be pressed in).
Measurement was from the center where the u-joint would be pressed. That measurement is approximately
23 1/2 - 23 3/4 inches from the front yoke. The width of the stripe is approximately 1 1/4. It looks like the
stripe has eroded over time or that maybe their were two stripes side by side. Again I'm not sure that these
are factory stripes, I didn't do it. I found them after cleaning the drive shaft.

asm69

Dave69x33

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Re: 1969 z28 Driveshaft (early build 10d)
« Reply #13 on: January 03, 2008, 02:09:51 AM »
Thanks asm69!