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Should I upgrade to 31 spline?

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Old 07-21-2009, 10:51 PM
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Riceinator
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Default Should I upgrade to 31 spline?

Hi
I am going to be installing some 3.73's and rebuilding the traction loc at least. I was wondering if I should upgrade to 31 spline axles and differential?
I will be building a 347 stroker and will see mostly street abuse, will the 31 spline be overkill?
Thanks.
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Old 07-21-2009, 11:02 PM
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AdderMk2
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31 spline is never overkill...

ive seen people break 28 splines with stock cars..

ive also seen 28 splines run 11's... so
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Old 07-22-2009, 07:01 AM
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Riceinator
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ok, thanks for the input. I might as well do it right the first time around and upgrade to the 31 spline.

So what all needs/should be replaced when I am building this rear?
So far I have the following on my list:
-Ford Racing 8.8' Traction-LOK Limited Slip Differentail - 31 SPL (would you recommend carbon fiber clutche plates?)
-steeda 31 spline axles
-8.8 3:73 ring and pinion
-8.8 axle girdle
-and an installation kit(axle shaft bearings, axle shaft seals, pinion gear bearings, carrier bearings, pinion and carrier shims, crush sleeve, pinion seal, pinion nut, ring gear bolts and cover gasket.)

I know I need fluid as well.

Am I missing anything?

Last edited by Riceinator; 07-22-2009 at 07:22 AM.
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Old 07-22-2009, 01:17 PM
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w8less
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why not 33 spline its the same price through strange and moser last time i checked
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Old 07-22-2009, 01:33 PM
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Tony71502
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Strange 33 spline differentials and axles require c-clip eliminators. I haven't done much research with moser, though.
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Old 07-22-2009, 01:34 PM
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w8less
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i thought that only applied to spools
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Old 07-22-2009, 01:48 PM
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Tony71502
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Nope. For example, on page 61, 2/3 down the page, their posi units require c clip eliminators.

http://www.strangeengineering.net/catalog/index.html

I was considering 33 splines for mine, actually, but settled with my 31's.
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Old 07-22-2009, 01:53 PM
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w8less
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i guess i never read into the details since i have the 33spline spool and already assumed i needed the c clip eliminators
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Old 07-22-2009, 11:03 PM
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tinman
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1) do the 31 spline, esp. if theres a 347 in the future
2) I think that Moser 31 spline axles also require a 'C' clip eliminator kit....
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Old 07-23-2009, 01:34 AM
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primetime5.0
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Originally Posted by tinman
1) do the 31 spline, esp. if theres a 347 in the future
2) I think that Moser 31 spline axles also require a 'C' clip eliminator kit....
they dont, I have a set in my car right now
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