how to tell if posi is 28 or 31 spline?

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Oct 1, 2007 | 04:52 PM

i_drive_stangs

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how to tell if posi is 28 or 31 spline?

i got that posi i was telling ya'll about but now that i look at it i think it may be for 31 spline axles. does anyone know hoe to tell? it is an auburn 7.5" unit.

thanks,
sean

Oct 1, 2007 | 06:24 PM

i_drive_stangs

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RE: how to tell if posi is 28 or 31 spline?

bump

Oct 1, 2007 | 07:20 PM

eaglecatcher

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RE: how to tell if posi is 28 or 31 spline?

counting maybe?

Oct 1, 2007 | 08:20 PM

cobra232

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Joined: Mar 2004

Posts: 3,594

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RE: how to tell if posi is 28 or 31 spline?

if it's for a 7.5 rear it's 28 spline as nobody makes 31 spline diffs for the 7.5

Oct 1, 2007 | 08:51 PM

RyansQuick6

Reverse Gear Member

Joined: Dec 2006

Posts: 8,130

From: Baton Rouge, LA

RE: how to tell if posi is 28 or 31 spline?

Count the teeth inside the spider gears for the axle shafts.

Ryan

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