These days, you don’t need gobs of displacement to make decent power, with things like forced induction and clever tuning making up for the lack of liters. Now, we’re checking out the most power-dense engines that GM currently builds with the following GM Authority tech breakdown.
First off, it bears defining exactly what we mean by the term “power-dense.” Basically, power density refers to peak engine output as it relates to displacement. So, for this particular piece, we’re looking at the GM engine lineup in terms peak horsepower per liter.
At the top of the list, we have GM’s turbocharged 2.0L I4 LTG gasoline engine, which produces a whopping 137.6 horsepower per liter. That equates to a maximum of 275 horsepower at 5,600 rpm and 295 pound-feet of torque at 3,000 rpm.
Currently offered under the hood of the Chevy Camaro, the LTG was previously available for the Chevy Malibu (now built out for the 2022 model year) as well as the now-discontinued Cadillac ATS. That said, we should also mention that the LTG is offered in two different states of tune between the Camaro and the Malibu, with the LTG in the Malibu rated at 250 horsepower at 5,400 rpm and 260 pound-feet of torque at 2,000 rpm, making for a power density of 125.1 horsepower per liter. In this particular state of tune, the LTG equipped by the Malibu is the third most power-dense GM engine in our list.
Unfortunately, although the LTG offers impressive power density, its days appear to be numbered, given the uncertain future for the Chevy Camaro, plus the uncertainty of whether or not the engine will once again be available to order for the 2023 Chevy Malibu.
In second place in our list, we have the twin-turbocharged 3.6L V6 LF4, currently equipped by the Cadillac CT4-V Blackwing and rated at 472 horsepower at 5,750 rpm and 445 pound-feet of torque 3,500 rpm, making for 132.4 horsepower per liter. To note, the LF4 was previously available for the now-discontinued Cadillac ATS-V, where it made 464 horsepower and 445 pound-feet of torque.
Finally, we have to mention the fourth-place 5.5L V8 LT6, the highest-ranked naturally aspirated engine on our list. Equipped by the C8 Chevy Corvette Z06, the high-revving LT6 is rated at 670 horsepower at 8,400 rpm and 460 pound-feet of torque at 6,300 rpm, making for 122.6 horsepower per liter.
Check out the full list of the most power-dense GM engines below:
|Engine||Displacement, CC||HP @ RPM||LB-FT @ RPM||HP/L||Applications|
|Turbocharged 2.0L I4 LTG||1,998||275 @ 5,600||295 @ 3,000 to 4,500||137.6||Chevy Camaro|
|Twin-Turbocharged 3.6L V6 LF4||3,564||472 @ 5,750||445 @ 3,500 to 5,000||132.4||Cadillac CT4-V Blackwing|
|Turbocharged 2.0L I4 LTG||1,998||250 @ 5,300||260 @ 2,000 to 5,000||125.1||Chevy Malibu|
|5.5L V8 LT6||5,463||670 @ 8,400||460 @ 6,300||122.6||Chevy Corvette Z06|
|Twin-Turbocharged 3.0L V6 LGY||2,990||360 @ 5,400||405 @ 2,350 to 4,000||120.4||Cadillac CT5-V|
|Turbocharged 2.7L I4 L3B||2,727||325 @ 5,500||380 @ 2,000 to 4,000||119.2||Cadillac CT4-V|
|Turbocharged 2.0L I4 LSY||1,998||237 @ 5,000||258 @ 1,500 to 4,000||118.6||Cadillac CT4, Cadillac CT5|
|Turbocharged 2.0L I4 LSY||1,998||235 @ 5,000||258 @ 1,500 to 4,000||117.6||Cadillac XT4, Cadillac XT5, Cadillac XT6|
|Turbocharged 1.3L I3 L3T||1,338||155 @ 5,600||174 @ 1,600||115.8||Buick Encore GX, Chevy Trailblazer|
|Turbocharged 1.2L I3 LIH||1,193||137 @ 5,000||162 @ 2,500||114.8||Buick Encore GX, Chevy Trailblazer|
|Turbocharged 2.0L I4 LSY||1,998||228 @ 5,000||258 @ 1,500 to 4,000||114.1||Buick Envision, Chevy Blazer, GMC Acadia|
|Turbocharged 1.5L I4 LYX||1,490||170 @ 5,600||203 @ 2,000 to 4,000||114.1||Chevy Equinox, GMC Terrain|
|Turbocharged 2.7L I4 L3B||2,727||310 @ 5,600||430 @ 3,000||113.7||Chevy Silverado 1500, GMC Sierra 1500|
|Turbocharged 2.7L I4 L3B||2,727||310 @ 5,500||350 @ 1,500 to 4,000||113.7||Cadillac CT4|
|Twin-Turbocharged 3.0L V6 LGY||2,990||335 @ 5,400||405 @ 2,350 to 4,000||112.0||Cadillac CT5|
|Turbocharged 1.4L I4 LE2||1,399||155 @ 5,600||177 @ 2,000 to 4,000||110.8||Buick Encore, Chevy Trax|
|Supercharged 6.2L V8 LT4||6,162||682 @ 6,000||653 @ 4,400||110.7||Cadillac Escalade-V|
|Supercharged 6.2L V8 LT4||6,162||668 @ 6,500||659 @ 3,600||108.4||Cadillac CT5-V Blackwing|
|Turbocharged 1.5L I4 LFV||1,490||160 @ 5,700||184 @ 2,500 to 3,000||107.4||Chevy Malibu|
|Supercharged 6.2L V8 LT4||6,162||650 @ 6,400||650 @ 3,600||105.5||Chevy Camaro ZL1|
|Turbo-diesel 3.0L I6 LM2||2,993||277 @ 3,750||460 @ 1,500||92.5||Cadillac Escalade, Chevy Silverado 1500, Chevy Suburban, Chevy Tahoe, GMC Sierra 1500, GMC Yukon, GMC Yukon XL|
|3.6L V6 LGX||3,641||335 @ 6,800||284 @ 5,300||92.0||Chevy Camaro|
|3.6L V6 LGX||3,649||310 @ 6,800||266 @ 2,800||85.0||Buick Enclave, Cadillac XT5, Cadillac XT6, Chevy Traverse|
|3.6L V6 LGX||3,649||310 @ 6,600||271 @ 5,000||85.0||Cadillac XT5, Cadillac XT6, GMC Acadia|
|3.6L V6 LGX||3,649||308 @ 6,700||270 @ 5,000||84.4||Chevy Blazer|
|3.6L V6 LGX||3,649||308 @ 6,800||275 @ 4,000||84.4||Chevy Colorado, GMC Canyon|
|2.5L I4 LCV||2,457||200 @ 6,300||191 @ 4,400||81.4||Chevy Colorado, GMC Canyon|
|6.2L V8 LT2 w/Performance Exhaust||6,162||495 @ 6,450||470 @ 5,150||80.3||Chevy Corvette Stingray|
|6.2L V8 LT2||6,162||490 @ 6,450||465 @ 5,150||76.3||Chevy Corvette Stingray|
|6.2L V8 LT1||6,162||455 @ 6,000||455 @ 4,400||73.8||Chevy Camaro|
|1.4L I4 LV7||1,399||98 @ 6,200||94 @ 4,400||70.1||Chevy Spark|
|6.2L V8 L87||6,162||420 @ 5,600||460 @ 4,100||68.2||Cadillac Escalade, Chevy Silverado 1500, Chevy Suburban, Chevy Tahoe, GMC Sierra 1500, GMC Yukon, GMC Yukon XL|
|Turbo-diesel 6.6L V8 L5P||6,599||445 @ 2,800||910 @ 1,600||67.4||Chevy Silverado HD, Chevy Silverado MD, GMC Sierra HD|
|5.3L V8 L84||5,327||355 @ 5,600||383 @ 4,100||66.6||Chevy Silverado 1500, Chevy Suburban, Chevy Tahoe, GMC Sierra 1500, GMC Yukon, GMC Yukon XL|
|Turbo-diesel 2.8L I4 LWN||2,776||181 @ 3,400||369 @ 2,000||65.2||Chevy Colorado, Chevy Express, GMC Canyon, GMC Savana|
|4.3L V8 LV1||4,300||276 @ 5,200||298 @ 3,900||64.2||Chevy Express, GMC Savana|
|6.6L V8 L8T||6,564||401 @ 5,200||464 @ 4,000||61.1||Chevy Express, Chevy Silverado HD, GMC Sierra HD, GMC Savana|