12 bolt Auburn posi units ID, pro vs. street - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**crossy** · 07-29-2007, 12:05 PM

Other than an obvious part number , that they DON"T have on them. does anyone here know how to ID an auburn PRO series Diff from the standard Auburn limited slip diff.

I'm trying to ID all the posi units i have laying here and I remember buying this one used for another one of my pipe dreams but i do not want to mis-advertise the unit.
please hold all your personal Auburn 'hate'comments as i have seen/heard them all.

I already went to the Auburn website and the pic is the same. my GUESS is that there is some color code on the springs for preload rating that would be the only difference?
thanx,crossy

07-29-2007, 12:05 PM	#1
crossy Oh,you can't buy that new Join Date: Apr 2000 Location: Pennsville,N.J. 08070, USA Posts: 2,039	12 bolt Auburn posi units ID, pro vs. street Other than an obvious part number , that they DON"T have on them. does anyone here know how to ID an auburn PRO series Diff from the standard Auburn limited slip diff. I'm trying to ID all the posi units i have laying here and I remember buying this one used for another one of my pipe dreams but i do not want to mis-advertise the unit. please hold all your personal Auburn 'hate'comments as i have seen/heard them all. I already went to the Auburn website and the pic is the same. my GUESS is that there is some color code on the springs for preload rating that would be the only difference? thanx,crossy __________________ "been there, done that, ruined the T-shirt". 2007 LBZ GMC Sierra, ECSB 2006 LM7 RCSB Silverado 98 Vortec project. 94,3500,6.5L 4L80 81 SWB GMC POS finally gone 73 Pinto, stock, w/CragarSS's-eww LOTS of Cummins trucks.



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