Cadillac just dropped cover on the new CT5-V Blackwing, its most track-capable four-door yet. Under the hood, the go-faster CT5-V Blackwing rocks a stout, supercharged V8 powerplant, and now, we’re getting a look at how that V8 compares to the V8 featured in another Caddy four-door, the Cadillac CT6-V.
From the off, there’s some potential confusion here worth teasing apart, primarily regarding the word “Blackwing.” Referencing the merlette, a black bird used in the original Cadillac emblem, “Blackwing” was used to identify the twin-turbo 4.2L V8 (production code LTA) under the hood of the Cadillac CT6-V. However, the Cadillac CT5-V Blackwing also uses the name for the model title, but rather than cradling the 4.2L V8 found in the CT6-V, the CT5-V Blackwing uses the supercharged 6.2L V8 (production code LT4) previously featured in the third-generation Cadillac CTS-V.
So then – how do these two powerplants compare in terms of specs and technical details? To find out, popular YouTube channel Engineering Explained is exploring both engines in this 13-minute, 49-second video.
The video starts with the basics, including where each engine is coming from, how much output each engine produces, and the overall configuration. A few noteworthy things worth pointing out is the compact dimensions of the latest LT4 in the CT5-V Blackwing, which, despite high displacement, manages to package everything in a tight, neat layout to fit under the hood. Interestingly, the V8 in the Blackwing sedan revs higher than the twin-turbo V6 in the CT6-V, with a redline of 6,600 rpm versus the 6,000-rpm redline line for the CT6-V.
There’s plenty more to learn about both these engines in the video below, so hit play and check it out:
Want to stay up to date on all things Cadillac? Then be sure to subscribe to Cadillac Society for more Cadillac CT5 news, more Cadillac CT6 news, and around-the-clock Cadillac news coverage. We also invite you to join the latest discussions in our Cadillac forums.
The 500E4 badge is replaced by either 450E or 700E4, depending on the configuration.
Herta holds the record for the youngest driver to win an IndyCar Series race.
Will it stick with the same 2.0L, get a mild hybrid, or see the bigger…
Sales increased 19.4 percent to 132,629 units during the first nine months of 2025.
Cadillac says it'll take 2-8 hours to replace the module.
The experienced drivers combine for over 500 Grand Prix starts.
