Quote:
Originally Posted by Blt2Lst
Specs say 2.73 gears with no mention of a posi unit so it is probably an open diff as opposed to a posi.
To confirm, you could jack up the rear of the car and turn the wheels. If both turn in the same direction, you have a posi, if not, it is an open diff.
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this vehicle if stock diff has an open or LIMITED SLIP DIFF..
to check this out jack up one rear wheel if limited slip it should be hard to rotate hence the limited not locking diff...slippage does occur with these limited slip diff's supplied to some of these vehicles...
most have the open diff unless when built it was ordered with this option which should be listed in the glove box...
also on the rear axle housing passengerside facing front there should be letters/numbers identifing this axle..
upon looking at your list of as built equiptment you have the 2.73 ratio diff..this is not limited slip...this is a very reliable open diff used for decades by GM..
however I would put the new tire on the rt frt of vehicle...
I also noticed how they installed the fe1 springs now that is a very poor spring ! did you ever change the springs ?
I got bf goodrich 255 50 z17 tires from costco for about 120 installed..these only last 35,ooomi very soft rubber ..