In addition to the new-for-Suburban 6.2L V8 mill, the RST Performance Package adds a new Hydra-Matic 10L80 10-speed automatic transmission and Magnetic Ride Control with performance calibration. The engine uses direct injection, Active Fuel Management, and continuously variable valve timing (VVT) to get the most from the 420-hp V8.

Torgue comes in at 460 pound-feet for towing or just generally hauling butt. Horsepower means speed; torque provides the pulling-power grunt to get you up to speed faster.

Chevrolet didn’t release performance or economy figures with the announcement. The 2019 Tahoe RST Performance Package scores a 5.7-second 0 to 60 time with no publically available top speed number — the Suburban’s extra weight will likely slow the big guy down a bit.

Our Digital Trends reviewer found real-world fuel economy with the Tahoe RST similar to the EPA-rated 14-MPG in the city, 22-MPG on the highway, and 17-MPG in combined driving. The Suburban’s weight may extract a toll on those figures, as well.

Optional accessories for the Suburban RST will push performance levels even higher. An available Performance Dual-Side Exit exhaust system by Borla is rated to improve exhaust flow by 28 percent and help fuel economy as well. Read more from digitaltrends.com…

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