Open Diff's

[shakazulu12]

Just curious why they went with open diff's on the hummer? It seems like they could have put a viscous coupling in there to improve AWD grip, and not sacrificed anything when locked in 4hi, and a mechanical distribution of power is much better than using the brakes to send power to the other wheel in my opinion.

Does the old NVG149 that they used in the Denali pickups/early SUV's bolt in or anything? Or has anyone put an LSD on the rear at all?

I know most of you are using 4 HI locked when you wheel, but on snow and ice its not always the best idea, or general on road driving.

Not really meant as a slam, just really curious as it would seem to maximize grip on all surfaces.