Re: Posi Rear in 2000 Silverado
A G-80 (aka govlok) only engages when there is a difference in rotation speed of the rear tires so going around a corner it doesn't engage but if you loose traction and there is about a 5-10 mph difference between the tires it locks into a possi and when you get over a certain speed about 25mph the possi will disengage and will not engage above that speed, Clutches last a long time in them because it is only a possi when it looses traction, when it isn't needed it acts like an open carrier
I had mine explode in my 2000 Silverado (at about 175k miles), I got another g-80 carrier off ebay for about $75 and a new ring and pinion for about $200 and a shim and bearing kit for about $150 a few hours of labor and I was back on the road. and have over 10,000 on this one
if you do go with the govlok DO NOT use friction modifiers like you would a limited slip rear end
and the g-80 is made by Eaton I believe
http://www.youtube.com/watch?v=KbMZ9vcYVSg