The brand new GM T1XX platform SUVs—Chevrolet Tahoe/Suburban, GMC Yukon/Yukon XL, Cadillac Escalade/Escalade ESV—are by and huge fairly candy. Emphasis on giant. I completely loved my first drive of the brand new Suburban, the brand new Tahoe beat its arch nemesis—the Ford Expedition—in a heads up comparability check. The brand new Cadillac Escalade was a finalist at this yr’s SUV of the 12 months competitors, and it simply completed forward of the Mercedes-Benz GLS 580 and BMW X7 in a full-size SUV comparability check (although it did lose to the neo-midcentury enchantment that’s the wonderful Lincoln Navigator). What would Don Draper drive, am I proper? The purpose is, these new three-row mega-yachts from the Common are good, stable vehicles. Although they might use extra energy.

Am I saying that the LT1 V-8’s 420 is not sufficient? Nicely, yeah, clearly it is not—keep in mind the distinction between wants and needs. Furthermore, final time I checked, that is America. Who’re you to inform me how a lot energy my three-ton SUV wants? With that in thoughts, try what our most glorious supply, Deep Burble, is telling us: GM will probably be providing supercharged variations of those three SUVs, most probably as a dealer-installed choice. How a lot energy? We might guess one other 200 horsepower or so, for a complete of between 600 and 625.

Subsequent query: Does the above make any sense? I’m one hundred pc assured there is a marketplace for extra highly effective SUVs—and perhaps 110 % for the Caddy. German, and to a lesser extent British, carmakers have proved that vast horsepower SUVs promote, as have the parents on the the recently-formed Stellantis. The 700-plus-horsepower Jeep Trackhawk and Dodge Durango Hellcat will not be solely cool, however persons are shopping for them.

The dealer-installed a part of the souped-up Tahoe/Yukon/Escalade deal troubles me, however I suppose it is potential, particularly if GM has been planning for it. So, I reached out to the person who has put in and upgraded extra superchargers on GM merchandise than (in all probability) anybody: John Hennessey of Hennessey Efficiency fame. As is all the time the case in my expertise, the Texan tuner (and now hypercar producer) had one thing fascinating to say.

“GM locked their SUV ECU’s for the 2020-2021 6.2-liter V-8. We will not tune them,” he advised me. And it will get extra fascinating: “We’re capable of improve 2020-2021 6.2-liter GM [pickup] vehicles.”

Parsing that, the SUVs, that are rumored to be getting a supercharger choice, will not be tunable. The vehicles—Chevy Silverado and GMC Sierra—are capable of be tuned. A conspiratorial thoughts may surmise that GM is staking out its hot-SUV turf forward of time, retaining tuners’ palms off its full-size SUV engines so it might leap into the area with its personal energy upgrades.

That is a reasonably large pink flashing gentle, no? I went again and requested Deep Burble if the pickup vehicles have been getting this rumored supercharger. They mentioned, “It was for this new gen of SUVs. Unsure in regards to the pickup vehicles.” Deep Burble went on to say that the pandemic has stalled issues, modified issues, and has made the spy sport tougher.

To wrap all of it up, feels like some form of efficiency package deal is coming for GM’s new full-size SUVs. Extra energy, higher brakes, and many others. This package deal may come from the manufacturing unit or it may come by means of a supplier set up. We all know it is not being finished by say the Cadillac V group of engineers. Both method, Common Motors is locking tuners out of the large SUV sport, and we predict we all know the rationale why.