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Author Topic: yh axles  (Read 560 times)
wisemanz28
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« on: May 08, 2014, 09:07:19 PM »

Did GM stamp "YH" axle shafts with the letters "YH"?
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69Z28-RS
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« Reply #1 on: May 08, 2014, 10:33:38 PM »

What is a 'YH' axle shaft?Huh
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Gary W.  /  69Z28-RS, 72 B 720 cowl console rosewood all tint
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ko-lek-tor
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« Reply #2 on: May 08, 2014, 10:46:00 PM »

What is a 'YH' axle shaft?Huh
Thanks for asking...I was too embarrassed?
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69Z28-RS
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« Reply #3 on: May 08, 2014, 10:47:23 PM »

you're welcome..  we'll all learn together.. Smiley
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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), 
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72 El Camino, '55 Nomad, '57 Nomad, '57 B/A Sedan
wisemanz28
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« Reply #4 on: May 11, 2014, 04:33:18 PM »

Maybe I was misinformed, so are you guys suggesting that there is no casting stamp on a 1969 z28 axle shaft ?  ( I was under the assumation that they were stamped "YH" )
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ko-lek-tor
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« Reply #5 on: May 11, 2014, 05:50:53 PM »

Maybe I was misinformed, so are you guys suggesting that there is no casting stamp on a 1969 z28 axle shaft ?  ( I was under the assumation that they were stamped "YH" )
I think you are referring to the wheel used on 69 Zs (late) http://camaros.org/suspen.shtml#Wheels which are stamped YH, not the axle. I'll go further and say (until refuted) that all 12 bolt axle shafts in production 1st gen. Camaros  (excepting perhaps JL8) are the same as far as temper/hardness and quality and interchangeability and there is not a "special" axle shaft in a Z. The 68-72 12 bolt Nova shares same shaft. There are posts regarding 12 bolts that explain better that not all 12 bolts, I.E. BE coded, and some service and low ratio R&Ps have differences in hardness. Never had any of that cool stuff, so will not comment further. Hope this helps. We are all learning.
« Last Edit: May 11, 2014, 06:25:14 PM by ko-lek-tor » Logged

Putting you First...Keeps me First. Talent on loan from God. Helping the hobbyist and exposing the fraud
1969 SS/RS 396 coupe Hugger Orange X22 712 bought in 79
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68camaroz28
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« Reply #6 on: May 11, 2014, 06:19:30 PM »

Maybe I was misinformed, so are you guys suggesting that there is no casting stamp on a 1969 z28 axle shaft ?  ( I was under the assumation that they were stamped "YH" )
I never noticed a stamping on axle shafts and checked mine (68Z) before rebuilding the 12 bolt rear. Most likely a mix up as already mentioned with YH rally wheels on 69 Z/28's. Where did you hear about YH axle shafts? And don't feel embarrassed about this as you would not believe how I have gotten some things mixed up over the years. Smiley And in some cases things were stamped the same like the 69 DZ block and the list 4053 DZ carb. We are ALL constantly learning!
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wisemanz28
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« Reply #7 on: May 11, 2014, 06:24:59 PM »

Thanks so much for the info, some years back I thought I saw saw something on the internet that refered to the axle shafts as being stamped YH. Guess my memory isn't what it used to be.
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wisemanz28
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« Reply #8 on: May 13, 2014, 09:08:14 PM »

interesting thread i thought I'd share
NCRS Historical Document Services link  

      
      
      
      
 
 

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Welcome wisemanz28. [Log out] The Supercar Registry Forums General Discussion Technical & Restoration 69 Z28 Rear Axle  
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#452548 - Sun Jun 19 2011 03:34 PM  69 Z28 Rear Axle  
enio45  
 
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Loc: Gilbert, AZ  Im working on a friends 69Z and noticed that the rear axle on one side has a casting or part number on the exposed end of the axle. The other axle has no casting numbers on it. The number is 9349 LS

My question is, do the 69 axles have casting numbers and if not, would one of the axles be a replacement?

Appreciate any advise on what is correct etc -

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#452569 - Mon Jun 20 2011 01:25 AM  Re: 69 Z28 Rear Axle [Re: enio45]  
wundercluck  
 
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Loc: Eastern Washington (Richland),...  My JL8 car has 7206 (if memory serves), which were the last four digits of a JL8 axle part number, cast in the area you are referring to. I thought it was on both axles but haven't looked in a while.

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#452605 - Mon Jun 20 2011 01:52 PM  Re: 69 Z28 Rear Axle [Re: enio45]  
luv2sixty9  
 
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"My question is, do the 69 axles have casting numbers and if not, would one of the axles be a replacement?"

Yes, Ed they have a casted part # on the ends of the axle.

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#452611 - Mon Jun 20 2011 03:26 PM  Re: 69 Z28 Rear Axle [Re: enio45]  
enio45  
 
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Loc: Gilbert, AZ  OK, from what i have been able to check out so far - the part number for the axle is 3969349 - so the axle would have a cast number of 9349 like the one im looking at. The other side does not have any casting info - so i am assuming its been replaced with a generic brand.

Any idea what the casting letters LS mean?

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#452641 - Mon Jun 20 2011 11:54 PM  Re: 69 Z28 Rear Axle [Re: enio45]  
travlnz28  
 
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Loc: Southern Calif.  Ed,

Both of my JL8 axles have 7206 on the end (part # 3947206). I have a few other GM axles laying around and they all have numbers on the end. My guess is the one without numbers would be a replacement.

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#452646 - Tue Jun 21 2011 01:15 AM  Re: 69 Z28 Rear Axle [Re: travlnz28]  
sc69sam@yahoo.co  
 
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Loc: Pennsylvania  doesn't matter, can't see them anyways. slide em back in Ed and go do a burnout. YEAAA!

 
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#452695 - Tue Jun 21 2011 07:16 PM  Re: 69 Z28 Rear Axle [Re: enio45]  
enio45  
 
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Loc: Gilbert, AZ  You got the right idea Sammmmmmmmmyyyyyyyyyyyyyyyy!!

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#452778 - Thu Jun 23 2011 01:53 PM  Re: 69 Z28 Rear Axle [Re: enio45]  
Charley Lillard  
 

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Loc: Woodland, ca. US  Originally Posted By: enio45OK, from what i have been able to check out so far - the part number for the axle is 3969349 - so the axle would have a cast number of 9349 like the one im looking at. The other side does not have any casting info - so i am assuming its been replaced with a generic brand.

Any idea what the casting letters LS mean?

The LS means "left Side" and should only be used on the left side unless you live below the Equator. In that case you will need to move it to the right side or your gas mileage will severely drop. It's just like the direction water swirls in a toilet. It changes depending weather you are above or below the Equator because of the magnetic pull of the North and south poles. If you have the axle on the wrong side it will be just like trying to swim against the swirl in that toilet. Go with the flow. Ta Daaaa..

 
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#452779 - Thu Jun 23 2011 02:28 PM  Re: 69 Z28 Rear Axle [Re: Charley Lillard]  
SmallHurst  
 
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Loc: Lees Summit, MO  Leave it to Chaz to come up with the answer we all have been looking for!!!!

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#452780 - Thu Jun 23 2011 02:47 PM  Re: 69 Z28 Rear Axle [Re: enio45]  
enio45  
 
Pooh-Bah

Registered: Wed Oct 09 2002
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Loc: Gilbert, AZ  What happens if you have one wheel north of the equator and the other south of the equator.....that would be a CF
« Last Edit: May 13, 2014, 09:26:38 PM by wisemanz28 » Logged
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