Transmissions and Drivetrain Need help with your trans? Problems with your axle?

strength of aluminum

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Old May 26, 2012 | 11:33 PM
  #1  
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strength of aluminum

I'm curious as to how much power the OE aluminum drive shafts can handle before destruction
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Old May 27, 2012 | 10:07 AM
  #2  
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Re: strength of aluminum

Can't just put a number on it, there are too many factors. Tell us your engine, trans, weight, gearing, tires, and usage. Then we can tell you what to expect. It'll never be good for running tens, but beyond that, there's just no solid rule of thumb. If you want to run, plan on a 3"-dia. x 0.083"-wall steel shaft with 1350-series yokes.
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Old May 27, 2012 | 11:29 AM
  #3  
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From: 51°N 114°W, 3500'
Car: 87 IROC L98
Engine: 588 Alcohol BBC
Transmission: Powerglide
Axle/Gears: Ford 9"/31 spline spool/4.86
Re: strength of aluminum

They're not as strong as a steel shaft. An aftermarket aluminum shaft may be a bit stronger.
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Old May 27, 2012 | 12:35 PM
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Re: strength of aluminum

They stand up in the LS1 cars pretty good; so unless you're WAY past those AND you have realy sticky tires, probably not worth worrying about.
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Old May 27, 2012 | 12:40 PM
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From: Waukesha, WI
Car: 86 Camaro Z28
Engine: LT1 200cc Ai heads and cam
Transmission: T56
Axle/Gears: 4.10:1 Zexel Torsen
Re: strength of aluminum

well there is no way I'm way past what the LS1s can do. It's pretty much like a healthy bump up. Sounds good, I just make sure before I invested and destroyed. Thank you
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Old May 27, 2012 | 01:44 PM
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Car: 1991 z28
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Re: strength of aluminum

dont buy a real old Al one, the newer the better since aluminum has no endurance limit
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Old May 27, 2012 | 02:13 PM
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Re: strength of aluminum

Does anyone happen to know the wall thickness of any of the factory driveshafts? If we knew that, it would be a really easy calculation.
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Old May 27, 2012 | 04:13 PM
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Re: strength of aluminum

aluminum has no endurance limit
Tell that to the FAA.

I think that's a little bit of a .... stretch.
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Old May 30, 2012 | 10:05 AM
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Engine: Vortec headed 355, xe262
Transmission: T56
Axle/Gears: 9-bolt 3.70
Re: strength of aluminum

From what the guys here have told me, the thirdgen alum shafts are way stronger than the LS1 aluminum shafts.
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Old May 30, 2012 | 07:08 PM
  #10  
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Car: 86 Camaro Z28
Engine: LT1 200cc Ai heads and cam
Transmission: T56
Axle/Gears: 4.10:1 Zexel Torsen
Re: strength of aluminum

I bet the third gen ones are pretty rare.
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Old May 30, 2012 | 07:36 PM
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Re: strength of aluminum

Not really...

Doesn't matter too much though. Take what you can get. Like I said, if the LS1 cars get by with em, most likely they'll work fine for most of us on here as well. Don't outsmart yourself over a bunch of "theory" type crap in cases like this; use your eyes, look around you, and just go with what works.
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Old May 31, 2012 | 01:31 PM
  #12  
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Transmission: Probuilt 700r4 3000 stall Vigilante
Axle/Gears: Moser 9" 3.25 w/True Trac
Re: strength of aluminum

I have also heard the 4th gen shafts might have a thinner wall thickness, but
I have not confirmed.
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Old May 31, 2012 | 03:44 PM
  #13  
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From: Waukesha, WI
Car: 86 Camaro Z28
Engine: LT1 200cc Ai heads and cam
Transmission: T56
Axle/Gears: 4.10:1 Zexel Torsen
Re: strength of aluminum

I appreciate the help. there's just nothing worse than spending the money, and then braking it. If I had the money a carbon fiber one would be in the budget
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