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yes, the numbers are at the wheels after the supercharger.
The IRS Expo's out-tow their GM counterparts.
My parent's have experience towing with an IRS Expo, and it wasn't great. Was that down to the trailer and truck combo and some inexperience towing? Probably. But I don't think the IRS hampers towing at all. Shit, even the 5.4 Expo's were rated north of 9000 pounds.
Other question, were these HD Burb's 4-speed or 6-speed?
It said 6L90E, so 6 speed just like the HD trucks.
I want IRS with a full frame
I want IRS with a full frame
Only by an entire day......Buy a Ford then.....
Edit treed someone beat me to it
The rumor (Again, nothing in concrete), is a standard solid rear axle for lower tier T2's and IRS for upscale T2 trims (which obviously includes the Escalade).
As to towing, one can argue "tow ratings" all day. It's all just chest beating at a certain point. Ford and GM (and any other manufacturer), don't have to meet a certain SAE or other "standard" measure of towing to be on equal grounding. Meaning there isn't a standard test with special equipment that all have to use to get their rating. It's really just one manufacturer saying "Fuck you, we can pull 8k!" Then the other going "No, fuck you, we can pull 9k..."
And it isn't about only about power. Because for example, a 2WD, 5.3L Yukon XL with the max trailering package is "Rated" at 8,300 pounds. Whereas a 6.2L 2WD Yukon XL with the max trailering package is "Rated" at 8,100 pounds.... Uh yea... I'm sure we all know that the 6.2 has more cojones in it to pull way more than a 5.3... It's all about what the manufacturer feels is "SAFE" for normal operation of the vehicle. I mean, shit, I'm sure you could strap a 16,000 pound trailer to a Suburban/Yukon XL with the 6.2 and it'd move the trailer. That doesn't mean I want to cross the country with that weight behind me...
With that said, I would rather tow with a solid rear axle. And truth be told, if you really need to move 8,000 or 9,000 pound trailer on a frequent basis, I'm looking at other options out there vs. a full-size SUV.
Oh, and one stat GM offers on theirs (the K2's), is axle capacity. GM lists their rear axle at 4,200 - 4,300 pounds. Ford doesn't offer that information. At least I haven't found it anyway.