2011 GS with ZR1 axle from the factory?
08-10-2012, 11:35 AM
#21
Safety Car
Thread Starter
Well, learn something new everyday. Gene Culley just let me know that all right side shafts are the same, and the left side is different depending on the suspension code. I have an F55, and apparently, finally lucked out on something 
04-17-2014, 03:00 PM
#26
Safety Car
Was under it putting on a custom tow hitch I got from BEZ06. Mine is a dry sump 2011 GS, with the F55 magnetic suspension too.
The left (driver side) is a lot larger that the right (passenger) side. It does not wheel hop when I smoke them either.
The thing is, it won't spin the Bridgestone Potenza RFs, they just grip and go. The Goodyears were easy to spin, all the way thru third, once they got about 10k on them.
04-18-2014, 10:25 PM
#27
Safety Car
p/n 20771984 ZR1 and?
p/n 20771984 ZR1 LHD MSRP $621. regular 3:42 axle MSRP $257. the number in your picture is not a GM part number.should have 8 digits.not sure what yours is
04-29-2014, 04:44 PM
#28
Safety Car
Seriously, go study a drawing of a LSD...I can't imagine any engineer making that statement. There is simply no way more power can be transmitted to one axle than the other, absolutely impossible. Give me the name of the engineer at Bowling Green so I can talk to him, otherwise you are just name dropping in a sad attempt to give credibility to your impossible statement. 
And also study resonance while you at it.
There were engineering reasons GM decided to design and use them.
