Earlier this year, GM Authority had the opportunity to get behind the wheel of the 2022 Cadillac CT5-V Blackwing, allowing us to record a short video of the ultra-high performance sedan reviving its supercharged 6.2L LT4 V8 engine. This also allowed us to line the CT5-V Blackwing up alongside executive editor Alex Luft’s personal ride of choice, a 2019 Corvette Grand Sport, for a fun rev-off between these two modern GM performance machines.
As Luft explains in the subsequent video of this all-GM rev-off, the 2022 Cadillac CT5-V Blackwing comes standard with a valved dual-mode exhaust, which will always be closed upon start-up. This is unlike the C7 Corvette Grand Sport, which can be started with the exhaust valves open for a louder, more aggressive sound upon start-up. The Corvette therefore sounds a bit meaner than the CT5-V Blackwing when it’s first started, however these two Small Block-powered beasts sound very similar in the upper rev ranges when they both have the valves opened.
One major difference with the CT5-V is that it produces a significant amount of cracks, burbles and pops once the driver lets off the gas, whereas the Corvette lets the revs fall in a smoother, more traditional manner. Additionally, the software in the 2022 Cadillac CT5-V Blackwing does not allow the sedan to free-rev above 4,500 rpm when the car is not in motion, whereas the Corvette will go all the way to the redline.
While both of these GM performance offerings feature a 6.2-liter Small Block, these engines are quite different in a number of ways. The 6.2L LT4 V8 engine in the CT5-V Blackwing is supercharged and produces 668 horsepower at 6,400 rpm and 659 pound-feet of torque at 3,600 rpm. The Corvette’s 6.2L LT1 V8, meanwhile, is naturally aspirated at produces 465 horsepower at 6,000 rpm and 465 pound-feet of torque at 4,600 rpm.
Check out the video embedded below to hear how the exhaust note of these two modern GM muscle cars compares.