Back in 2018, General Motors unveiled its twin-turbo 4.2-liter V8 gasoline engine in the Cadillac CT6-V. Unfortunately, for several reasons, this powertrain was very quickly discontinued before other models from the manufacturer could even be treated to it. As a turn of events though, it looks like the company does still have a few crate units in stock.

As investigated by The Drive, a company spokesperson confirmed that just a handful of units were still available to purchase via Cadillac's online parts catalog for $21,666.67 excluding a $3,500 core charge. Each LTA Blackwing engine was built by hand at the Corvette production facility in Bowling Green, Kentucky.

The purchase process of this crate engine is not just as simple as paying for it online and having it delivered to your door. If you wish to acquire this engine, you will have to get in touch with your nearest Cadillac dealership so that it can facilitate the order. Once confirmed, you'll need to head on over and collect it yourself.

To those interested, a spokesperson clarified that "the [engine] is the service available variant. We did not release this in our Performance parts catalog as a crate engine. We're not building any more Blackwing engines." He added that only a small handful of these units are currently available.

LTA Blackwing production has come to a stop altogether which means the very few owners who managed to get their hands on a CT6-V or CT6 4.2 Platinum won't be able to source a replacement motor if something goes awry in the future.

The Blackwing mill provides a pretty hefty power output of 550 horsepower and 640 lb-ft of torque. This is partially thanks to the pair of titanium aluminide turbines that have the capability of spinning at 190,000 rpm and generating 20 psi of boost. We'd love to see one in an old Coupe DeVille, complete with bigger turbos and upgraded suspension. The way we see it, you'd have a bargain and a sleeper unlike any other.