GM is poised to introduce a brand-new generation for its full-size crossovers, with the Chevy Traverse and GMC Acadia set to be overhauled for the 2024 model year, and the Buick Enclave set to be overhauled for the 2025 model year. The upcoming model redesigns will include changes to the powertrain lineup, and one engine in particular makes the most sense for GM’s next-gen full-size crossovers.
That engine is the turbocharged 2.7L I4 L3B gasoline unit, a powerplant also referred to as the “torque monster” internally at GM.
The nickname isn’t without justification. Currently found in a wide range of applications, including the Chevy Colorado, Chevy Silverado 1500, GMC Canyon, GMC Sierra 1500, and Cadillac CT4-V, the turbo 2.7L I4 L3B produces upwards of 430 pound-feet of torque in the new Colorado, Canyon, Silverado, and Sierra, besting even the naturally aspirated 5.3L V8 L84 gasoline engine’s 383 pound-feet in terms of peak twist.
As GM Authority exclusively reported last week, General Motors is now considering the L3B for additional applications beyond those listed above, and it would certainly make sense for models like the next-gen Chevy Traverse, GMC Acadia, and Buick Enclave. Of course, if these next-gen crossovers did cradle the turbo 2.7L I4 L3B, it would represent the first time in which the four-banger was mounted in a transverse application.
Typically, an engine will produce less power in a transverse layout than it would in a longitudinal layout. As such, we wouldn’t expect the L3B to produce the full-fat 430 pound-feet of torque in the next-gen Chevy Traverse, GMC Acadia, and Buick Enclave. Rather, the mid-range Turbo Plus output of 391 pound-feet of torque would seem more likely.
Even so, 391 pound-feet of torque would still best the torque figures for the current Chevy Traverse, GMC Acadia, and Buick Enclave models. What’s more, a rating of 310 horsepower would eclipse power levels for the turbocharged 2.0L I4 LSY, as well:
|Engine||Turbo Plus 2.7L I4||Turbo 2.0L I4||3.6L V6||3.6L V6|
|Application||2023 Chevrolet Colorado||2020-2023 GMC Acadia||2018-2023 Buick Enclave, 2018-2023 Chevy Traverse||2017-2023 GMC Acadia|
|Output (hp @ rpm)||310 @ 5,600||228 @ 5,000||310 @ 6,800||310 @ 6,600|
|Torque (lb-ft @ rpm)||391 @ 2,000||258 @ 1,500 to 4,000||266 @ 2,800||271 @ 5,000|
All told, it’s definitely an enticing prospect. We’ll keep an eye on this and report back any updates, but in the meantime, remember to subscribe to GM Authority for more Chevy Traverse news, GMC Acadia news, Buick Enclave news, Chevy news, GMC news, Buick news, GM business news, and around-the-clock GM news coverage.