The new Cadillac Blackwing sedans, including the 2022 Cadillac CT4-V Blackwing and CT5-V Blackwing, are the most track-capable Cadillac vehicles in history, arriving with heaps of power and performance, all without sacrificing luxury. Given the names, one would be forgiven for thinking that the new go-faster sedans should at least offer the twin-turbocharged 4.2L V8 LTA “Blackwing” gasoline engine, but according to Cadillac Performance Variant Manager, Mirza Grebovic, the LTA simply wasn’t right for the new Cadillac Blackwing sedans.
In a recent interview with GM Authority Executive Editor Alex Luft, Grebovic provided insight into the development process for the new Cadillac Blackwing sedans, including the decision not to offer the LTA Blackwing engine under the hood. For reference, the twin-turbo 4.2L V8 LTA was exclusive to the Cadillac CT6 Platinum and CT6-V. To note, the CT6 range has been discontinued in the U.S. and Canada while sticking around in China, where the Blackwing engine is not available.
“We thought about packaging any engine we could think of and we did consider the Blackwing LTA engine. In summary, that engine was created specifically for the CT6-V,” Grebovic told GM Authority. “That vehicle had a different philosophy and mission – it wasn’t meant to be track-capable. With the hot-V configuration and the horsepower it offered versus mass, it just wasn’t right. It wasn’t a better call for these track-capable V-Series Blackwings.”
Instead, Cadillac decided to equip the new Cadillac Blackwing sedans with proven track-ready engines, including the supercharged 6.2L V8 LT4 for the CT5-V Blackwing (previously equipped in the third-generation Cadillac CTS-V as well as the C7 Corvette Z06) and the twin-turbocharged 3.6L V6 LF4 for the CT4-V Blackwing (previously found in the Cadillac ATS-V).
“The LT4 [for the CT5-V Blackwing] was bulletproof and the LF4 [for the CT4-V Blackwing] was bulletproof in previous models,” Grebovic said. “We learned a lot about the engines.”
To note, the LT4 produces 668 horsepower and 659 pound-feet of torque in the CT5-V Blackwing, while the LF4 produces 472 horsepower and 445 pound-feet of torque in the CT4-V Blackwing. Interestingly, Grebovic says the new Blackwing sedans’ Global B electric architecture (also known as Vehicle Intelligence Platform, or VIP) also played a role in the Blackwing sedan’s capabilities.
“And then the VIP [Global B electrical] architecture gave us all new calibrations and all new opportunities so we knew we could increase the performance and make them more robust for track,” Grebovic told GM Authority. As covered previously, Global B provides support for features like the Performance Data Recorder and fourth-generation Magnetic Ride Control.
In the end, despite its impressive specs and engineering, the LTA Blackwing engine did not make sense for the new Cadillac Blackwing sedans.
“We would have had to redesign the Blackwing engine significantly to make it as track-capable as these engines that we chose,” Grebovic concluded.