As part of GM’s reveal of the refreshed 2022 Chevy Silverado 1500, the automaker announced that its best-selling vehicle will get a new, high-output version of the turbocharged 2.7L L3B I4. In some respects, this could make the naturally aspirated 5.3L L84 EcoTec3 V8 irrelevant.
While the new, high-output 2.7L maintains the same 310 horsepower as the current L3B, the automaker touted a 20-percent increase in torque, amounting to 420 pound-feet at 3,000 RPM compared to the L3B engine’s current 348 pound-feet torque peak. By contrast, the 5.3L L84 produces 355 horsepower and 383 pound-feet.
As a result, GM said that the high-output 2.7L in the 2022 Chevy Silverado “leads with more torque than any base engine in its class and has a maximum trailering rating of 9,600 pounds in a two-wheel drive configuration.”
|2.7L I4 Turbo High Output||5.3L V8 L84||6.2L V8 L87|
|Horsepower (hp / kW @ rpm):||310 / 231 @ 5600 (GM est.)||355 / 265 @ 5600 (SAE certified)||420 / 313 @ 5600 (SAE certified)|
|Torque (lb-ft / Nm @ rpm):||420 / 569 @ 3000 (GM est.)||383 / 519 @ 4100 (SAE certified)||460 / 623 @ 4100 (SAE certified)|
|Transmission||8-speed auto||10-speed auto||10-speed auto|
“The engine maintains its fully forged bottom end as well as technology used in diesel engines to deliver on truck durability,” GM added. “These enhancements enabled engineers to reduce noise and tune the engine for greater torque production, particularly in the usable low-mid RPM range.”
The improved output of the new 2.7L powerplant is also aided by a new, more rigid cylinder block casting as the foundation and a 30 percent stiffer crankshaft.
GM also said it applied shift scheduling revisions to the 8-speed automatic transmission currently mated to the L3B “to offer smoother shifting, along with quicker downshifts, for a greater feeling of refinement and power on demand.”
That may remedy what has been a problematic and unrefined 8-speed, since GM unfortunately did not pair the new 2.7L to its proven 10-speed automatic in the 2022 Chevy Silverado.
With the numbers of the new, high-output 2.7L supplanting at least the torque rating of the L84, GM could drop that 5.3L V8 and still keep the 6.2L L87 EcoTec3 V8, which tops out its gasoline offerings with 420 horsepower and 460 pound-feet of torque.