C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Differences in half shafts???

Old Mar 18, 2013 | 05:37 PM
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Default Differences in half shafts???

I have 6 halfshafts here and there are 2 different part numbers, so my question is: is there a structural difference between the d36(auto) halfshafts and the d44(man) halfshafts? All of them are the same length and use the same u-joint.
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Old Mar 18, 2013 | 06:24 PM
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I have the same variation in my collection of halfshafts and are not aware of any physical differences

Topic has been debated previously
http://forums.corvetteforum.com/1989020-post2.html

Last edited by vetteoz; Mar 18, 2013 at 06:26 PM.
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Old Mar 18, 2013 | 06:37 PM
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Originally Posted by Sleazy Rider
I have 6 halfshafts here and there are 2 different part numbers, so my question is: is there a structural difference between the d36(auto) halfshafts and the d44(man) halfshafts? All of them are the same length and use the same u-joint.
There have been steel and there have been aluminum. Depending on production years the aluminum could display different part numbers and maybe nothing is different between them. I have in the past been able to disassemble the Spicer part number that is also on the same label in many cases. There could have been a spec changed on wall thickness or any number of things. The first few hundred or so ZR-1's had steel, the balance of the rest were aluminum and the same part number as a D36 with any axle ratio.

Post the part #'s and if there's a Spicer number on the label post it also.
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Old Mar 18, 2013 | 07:49 PM
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this first half shaft is out of an autmatic car. on the label it is:
10223032-9YA
25 jan 94 918851-1408

on the end is: spicer
FA17
F3 289
41 KAG

the next half shaft has been in my 89 6-speed car for 20+ years. we took both shafts out on the line. evidently more hp + 4.09 gears and m&h tires was an overload. and new stub axles. but i have no idea what these came out of, auto or man.
14093105-5yz121

on the end is: SPICER
H5152 (stamped)
289

thanks.

Last edited by Sleazy Rider; Mar 18, 2013 at 08:55 PM.
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Old Mar 18, 2013 | 08:10 PM
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Originally Posted by Sleazy Rider
this first half shaft is out of an autmatic car. on the label it is:
10223032-9YA
25 jan 94 918851-1408

on the end is: spicer
FA17
F3 289
41 KAG

the next half shaft has been in my 89 6-speed car for 20+ years. we took both shafts out on the line. evidently more hp + 4.09 gears and m&h tires was an overload. and new stub axles. but i have no idea what these came out of, auto or man.
14093105-5yz121

on the end is: SPICER
H5152 (stamped)

thanks.
289
FWIW....Since Tommy Morrison only played with stick shifters, and since so many halfshafts in his stash of spares and leftovers are PN 14093105, I'd bet that PN is for manual cars. The other PN we have in quantity is 10154277? Can anybody ID that one. How about 14046912?
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Old Mar 18, 2013 | 10:51 PM
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I'll try to do this in one "pile"!

14046912 - '84 - '88 A4 with out 6 way seats A42original part number for an '84 AT with out 6 way seats

14041925 - original part number for an '84 AT with 6 way seats or MT

10054290 - '85 thru '88 A4 with 6 way seats and MT all

14093105 - a replacement for the 14041925 and production for '89 ? (in '90 the 14093105 was mixed with 10054290 for replacements)

10098291 - steel confirmed for '90 early ZR-1 and likely maybe the '89 M6 cars

10154277 - became the service and production replacement for all MT and A4 with 6 way back to '84 and thru '93

10223032 - production and service for "ALL"

Sleazy & Ralph - are your 14093105 shafts steel or aluminum?

Last edited by WVZR-1; Mar 19, 2013 at 04:58 PM.
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Old Mar 19, 2013 | 05:17 AM
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I can only recommend the aluminum half shafts be replaced with steel ones as they are so weak and too easy to twist and snap them, even with an auto transmission.

I had the aluminum half shaft copied and steel ones made, they have not given any trouble since.
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Old Mar 19, 2013 | 09:01 AM
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Originally Posted by WVZR-1
Sleazy & Ralph - are your 14093105 shafts steel or aluminum?
all my half shafts are aluminum.

gerardvg, i had a set of steel half shafts made, they were crazy heavy. when i moved up to the c5, i sold them, now i'm back to playing with the c4. on my original shafts, we twisted one into 2 pieces and the other twisted about 45 degrees. i may cut one in half and measure the thickness of the tubing and get some thicker tubing to weld back in. maybe send them out for some cryo time.
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Old Mar 19, 2013 | 09:42 AM
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Originally Posted by Sleazy Rider
all my half shafts are aluminum.

gerardvg, i had a set of steel half shafts made, they were crazy heavy. when i moved up to the c5, i sold them, now i'm back to playing with the c4. on my original shafts, we twisted one into 2 pieces and the other twisted about 45 degrees. i may cut one in half and measure the thickness of the tubing and get some thicker tubing to weld back in. maybe send them out for some cryo time.
Which did you twist and break? In you're inventory the 14093105 would seem to be the preferred part.
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Old Mar 19, 2013 | 10:15 AM
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Originally Posted by WVZR-1
Which did you twist and break? In you're inventory the 14093105 would seem to be the preferred part.
those were my 89 original shafts and they were replaced with steel shafts. it wasen't until years later when we quit racing the car and started modding a c5z that i got another set of used aluminum shafts. those would be the 14093105 shafts that i am working on now. i still may take a pair of the -032 shafts and have thicker tubes installed on the ends. should still be lighter than steel.
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Old Mar 19, 2013 | 10:30 AM
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Originally Posted by Sleazy Rider
those were my 89 original shafts and they were replaced with steel shafts. it wasen't until years later when we quit racing the car and started modding a c5z that i got another set of used aluminum shafts. those would be the 14093105 shafts that i am working on now. i still may take a pair of the -032 shafts and have thicker tubes installed on the ends. should still be lighter than steel.
I'm quite sure you'll not be able to reuse the inserts and I think if I were you I'd maybe keep them in an "as is" to either resell or "spares"! I have 1 single half-shaft here that I'm quite sure is a Denny's and I don't have an "out of the car" shaft to compare it to. What is the OD of your tube and maybe send me a snapshot or two of yours to compare to this one.

San Antonio isn't close but it might be worth a phone call:

http://www.driveshaftspecialist.com/...tte-Cobra.html

On the east coast I'd suggest: http://www.dennysdriveshaft.com/

I've used many of theirs for projects and they're very popular - the entire country!
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Old Mar 19, 2013 | 11:27 AM
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wvzr-1
i can get some pics and measurements when i get home tonight. i see what you mean about not being able to reuse the inserts with thicker tubes. these shafts that i have should be good to get the motor/car broke in. maybe this winter i can get new hd shafts before we start to beat on it next year. need to get the cash flowing again, time to start selling some parts.
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Old Mar 19, 2013 | 12:57 PM
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Originally Posted by Sleazy Rider
wvzr-1
i can get some pics and measurements when i get home tonight. i see what you mean about not being able to reuse the inserts with thicker tubes. these shafts that i have should be good to get the motor/car broke in. maybe this winter i can get new hd shafts before we start to beat on it next year. need to get the cash flowing again, time to start selling some parts.
Someone wondered if the Morrison halfshafts are aluminum or steel. All are aluminum except for two new 14046912s, which are steel. Would they be early ZR-1 parts?
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Old Mar 19, 2013 | 01:18 PM
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Originally Posted by indianavette
Someone wondered if the Morrison halfshafts are aluminum or steel. All are aluminum except for two new 14046912s, which are steel. Would they be early ZR-1 parts?
I would doubt that. The only reference I've ever seen to that number is the '84 that I mention. On the label with the part number on it is there anything else printed on it? Maybe we could make a date code out of it. I have never had a ZR-1 steel in my hands and there was only a couple hundred cars reported with them.

That's why I asked about the 14093105 part #. I found a snapshot of the early ZR-1 steel but I can't read 1 digit! It's no where near the 14093105 but I've emailed the fellow that it belongs to.

Last edited by WVZR-1; Mar 19, 2013 at 01:46 PM.
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Old Mar 19, 2013 | 04:57 PM
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An acquaintance I like to consider a "friend" "SCRREM" here on the forum has been able to confirm the part number from his snapshot of the steel ZR-1 half-shafts that he removed. The steels were 10098291 and were replaced by the 10154277 originally and finally by the 10223032 for all service replacements.
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