Open or Posi? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

02_GMC_97_FIII · 07-02-2007, 12:12 AM

Finished parting out a truck that the owner was sending to the scrapper. Got a bunch of parts including the full rear axle off of a '71.

How do I tell if it is an open diff or is a posi unit? When both tires were raised off of the ground and turning one wheel by hand, the other stayed in place. (no reverse turn) Haven't had a chance to pull the cover yet.

The guy insisted it was posi however wasn't positive, ended up getting the axle thrown in for free so couldn't argue with that.

Just trying to figure out if I will soon no longer have a peg leg under my truck.

Thanks!

07-02-2007, 12:12 AM	#1
02_GMC_97_FIII Registered User Join Date: Dec 2004 Location: Mequon, WI Posts: 186	Open or Posi? Finished parting out a truck that the owner was sending to the scrapper. Got a bunch of parts including the full rear axle off of a '71. How do I tell if it is an open diff or is a posi unit? When both tires were raised off of the ground and turning one wheel by hand, the other stayed in place. (no reverse turn) Haven't had a chance to pull the cover yet. The guy insisted it was posi however wasn't positive, ended up getting the axle thrown in for free so couldn't argue with that. Just trying to figure out if I will soon no longer have a peg leg under my truck. Thanks! __________________ '72 Chevy C10 Shortbox, 350/TH350 '08 Chevy Trailblazer SS 6.0L AWD 400HP Last edited by 02_GMC_97_FIII; 07-02-2007 at 12:13 AM.



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