General Motors is considering using the turbocharged 2.7L L3B inline four-cylinder gasoline engine for vehicles beyond those it’s currently found in, GM Authority has learned from sources familiar with the matter.
Beyond these uses, where else could The General use its “torque monster” – as it’s sometimes referred to within GM?
The most obvious use of the L3B would be under the hoods of GM’s next-generation large crossovers – the future Chevy Traverse, GMC Acadia, and Buick Enclave. All of these will ride on the GM C1-2 platform, and are currently powered by the naturally-breathing 3.6L V6 LFY engine, rated at 310 horsepower and 266 pound-feet of torque.
By comparison, the highest output version of the L3B currently makes 310 horsepower and 430 pound-feet of torque, thus earning the torque monster moniker. While the horsepower rating is the same, the torque rating is an impressive 164 pound-feet higher than the atmospheric V6. That said, it’s likely that the L3B might lose some of its might as it’s incorporated into a transverse layout, as opposed to the longitudinal configuration that it’s been found in until this point.
|Turbo 2.7L I4 L3B High-Output||3.6L V6 LFY|
|Horsepower (hp / kW @ rpm):||310 / 231 @ 5600||310 / 232 @ 6800|
|Torque (lb-ft / Nm @ rpm):||430 / 583 @ 3000||266 / 361 @ 2800|
It’s worth noting GM Authority has already hinted at the likelihood of the 2.7L L3B ending up in the next-gen Acadia in May 2022.
The possibilities for more widespread use of the L3B engine amongst GM’s vehicles don’t end with crossovers.
The 2.7L L3B presents a strong argument for replacing the 5.3L V8 L84 in full-size SUVs. In High-Output configuration, the 2.7L L3B boasts almost 50 pound-feet of torque more than the L84, while potentially delivering lower fuel consumption and emissions ratings, albeit with 45 less ponies, as compared to the smaller version of the naturally aspirated Small Block V8.
|Turbo 2.7L I4 L3B High-Output||5.3L V8 L84||6.2L V8 L87|
|Horsepower (hp / kW @ rpm):||310 / 231 @ 5600||355 / 265 @ 5600||420 / 313 @ 5600|
|Torque (lb-ft / Nm @ rpm):||430 / 583 @ 3000||383 / 519 @ 4100||460 / 623 @ 4100|
|Transmission||8-speed auto||10-speed auto||10-speed auto|
The General has already set the precedent for using the turbocharged four-banger in full-size pickup trucks, so the next logical step may be to bring the torquey four-pot to its full-size SUVs – the Chevy Tahoe, Chevy Suburban, GMC Yukon and GMC Yukon XL.
Notably, while the Cadillac Escalade and Cadillac Escalade ESV may be considered candidates for the 2.7L L3B, the Cadillac full-sizers do not offer the 5.3L V8 L84, making it unnecessary to introduce the L3B in these models.
Which models would you like gain the L3B? Sound off in the comments below, and don’t forget to subscribe to GM Authority for more L3B engine news, GM business news, and around-the-clock GM news coverage.