LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

Aluminum Driveshaft Strength?

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Old Nov 26, 2003 | 03:23 AM
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Aluminum Driveshaft Strength?

I have an LS1 driveshaft in my car and i'm starting to question it's strength over the stock steel one that come's on LT1's.

Are the aluminum one's actually stronger? Or are they just better because they are lighter and are better for drivetrain power loss
Old Nov 26, 2003 | 03:41 AM
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PLENTY a post on this subject | just do the search thang

to summarize though, the word is 1LE is strong & aluminum. LS1's do twist on rare occasions. If you're not pushin' some serious HP, I don't think you have to worry. If you are, well, time to save up for a custom steel shaft
Old Nov 26, 2003 | 07:25 AM
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I know of two people that have twisted aluminum drive shafts. One was making ~400HP and the other was making over that. I would get a good solid steel one if it were me.

Pic 1

Pic 2

Last edited by GRN96WS6; Nov 26, 2003 at 07:32 AM.
Old Nov 26, 2003 | 07:25 AM
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I can tell you from experience that 350rwhp will do this on sticky tires.

LS1 DS pics
Old Nov 26, 2003 | 07:33 AM
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i snapped one w/ just 309rwhp.. get a upgraded denny's or spohn.. Save the headache's of having twisted spline's....
Old Nov 26, 2003 | 03:40 PM
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exactly see, I don't see any pics of broken stock lt1 shaft's So are the aluminum one's not as strong as the stock steel one's then?
Old Nov 26, 2003 | 03:45 PM
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Besides the fact that LT1 shafts tend to be out of balance, they are indeed very strong. No substitute for carbon fiber, however.
Old Nov 26, 2003 | 03:58 PM
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Anyone know a documented case of a 1LE failing?
It's stronger than the LS1's that are twisting up and failing...
Old Nov 26, 2003 | 04:09 PM
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The 1LE aluminum driveshafts like most GM products aren't constructed very well. Get an inland empire. 100% better constructed and race proven. THere's plenty of cars making over 500hp with
alumium shafts on them. It's all about the build quality.
Old Nov 26, 2003 | 04:24 PM
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i twisted mine in half, it was in there for about a year or so. twisted it right in half oh well i'm going chromoly next, if you run some power get rid of the ls1 shaft mine is now junk...
Old Nov 27, 2003 | 06:49 PM
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damn guess ill be trading my LS1 shaft for another stock LT1 then
Old Nov 27, 2003 | 07:00 PM
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Isn't this subject somewhat related to the weak 10 bolt theory? An M6 car is going to be harder on a driveshaft than an automatic car is.

Frank
Old Nov 27, 2003 | 07:02 PM
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Originally posted by 12SCNDZ
Isn't this subject somewhat related to the weak 10 bolt theory? An M6 car is going to be harder on a driveshaft than an automatic car is.

Frank
nah all I wanted to know is WHICH ONE is STRONGER the aluminum one or the stock steel one.. It'b be like me asking "which one is stronger 10 bolt or 12 bolt" know what I mean
Old Nov 27, 2003 | 07:03 PM
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Originally posted by RamAir95TA
Besides the fact that LT1 shafts tend to be out of balance, they are indeed very strong. No substitute for carbon fiber, however.
my friend has twisted that too (well snapped it) but since they are so expensive, some places will rebuild them
Old Nov 27, 2003 | 08:08 PM
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Originally posted by Seal
my friend has twisted that too (well snapped it) but since they are so expensive, some places will rebuild them
snapped it, what did he snap? the u-joint ?



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