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Old 08-24-2004, 02:04 PM   #1
bigb
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Default replace two piece drive shaft with one piece

i was working on my little vibration issue last night with my friend who is a transmission tech at the chevy dealership.........he was telling me i should replace my two piece drive shaft with a one piece aluminum shaft.......cutting out the carrier bracket ect..........he claims the vibrations are caused by the two piece drive shaft and is why theres a carrier bearing.......is there any ill effects of putting a one piece in?....also he says our factory drive shafts are super heavy and an aluminum drive shaft would be nice and light........i'm skeptic, need feedback......thanks


















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Old 08-24-2004, 02:23 PM   #2
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Default Re: replace two piece drive shaft with one piece

I think it's been talked about before but with no conclusion. I'd do a search first.
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Old 08-24-2004, 04:33 PM   #3
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Default Re: replace two piece drive shaft with one piece

my truck came from the factory with a one piece shaft. I know the ext. cab shortbed trucks and the reg. cab shortbed trucks have a 2 piece shaft, but im not sure why my reg. cab longbed came with a single shaft.
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Old 08-24-2004, 05:04 PM   #4
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Default Re: replace two piece drive shaft with one piece

Quote:
Originally Posted by chevyman992002
my truck came from the factory with a one piece shaft. I know the ext. cab shortbed trucks and the reg. cab shortbed trucks have a 2 piece shaft, but im not sure why my reg. cab longbed came with a single shaft.
yeah i saw somewhere that you had a one piece DS......i was gonna ask you if you did that yourself......maybe cause yours is a longbed????.......do you have any vibration?......
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Old 08-24-2004, 05:39 PM   #5
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Default Re: replace two piece drive shaft with one piece

Could they just be out of balance? My dads suburban has a 2 piece shaft, no vibration whatsoever.
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Old 08-24-2004, 06:19 PM   #6
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Default Re: replace two piece drive shaft with one piece

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Originally Posted by Whifflebat
Could they just be out of balance? My dads suburban has a 2 piece shaft, no vibration whatsoever.
maybe?......anythings possible i guess......i kind of like the idea of a lighter one piece drive line......apparently there is a significant wieght difference.?????
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Old 08-24-2004, 08:42 PM   #7
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Default Re: replace two piece drive shaft with one piece

Quote:
Quote:
Originally Posted by Whifflebat
Could they just be out of balance? My dads suburban has a 2 piece shaft, no vibration whatsoever.

maybe?......anythings possible i guess......i kind of like the idea of a lighter one piece drive line......apparently there is a significant wieght difference.?????
Do you have a big diesel shop in the area? They usually have the equipment to spin that shaft(s) and get them balanced. I have heard to many stories of vibration and an unbalanced shaft was the culprit.
I just replaced my aluminum shaft with a Nitro1500...it's steel. There is a HUGE difference in weight...however my original one piece broke under torque, so I am not going back to the $600 GM Aluminum shaft. But if you guys are curious why are they so damn light besides just being aluminum...hope the pic attachment works...
Broken Shaft...hehehe
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Old 08-24-2004, 08:49 PM   #8
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Default Re: replace two piece drive shaft with one piece

I'll keep my old heavy steel one thank you very much I never thought it was all that heavy, besides, I think that weight is in the right place, I wouldn't want to be putting alot of torque through a driveshaft that is designed to be light...who knows what they cut out of it.

Don't really need a big diesel shop though, around here we have a couple of driveline shops that do this kind of work as their business. I got both my ujoints (before I knew how...) replace and balanced (and they painted it!) for $97...
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Old 08-24-2004, 10:06 PM   #9
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Default Re: replace two piece drive shaft with one piece

Ofcourse Whifflebat...Texas...I am here in Maryland and I bought my driveshaft and both yokes from Texas, including shipping it was still cheaper than here. Amazing country that Texas!
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Old 08-27-2004, 02:04 AM   #10
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Default Re: replace two piece drive shaft with one piece

A 2 piece shaft is to reduce the length of the shaft and the angles and stress that could be applied to a lengthy shaft. The two piece is actually better than the single long one. it splits the angles over the two shafts rather than applying them over the single shaft.

If you plan on lowering the truck a single long shaft will create you some major problems as well woth clearences..
Have a drive train shop check the balance and straightness of your shafts. Replace the u joints and carrier bearing. Also install the 3/4" hevy wall tube spacer like I suggested in your other post.
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