The Stick-Shift 668-HP CT5-V Blackwing And 472-HP Cadillac CT4-V Blackwing Are Cadillac's Last Hurrah For Loud Gasoline Fury Photo: David Tracy This is the end. Cadillac, a brand with a rich history of stuffing gigantic gasoline motors under the hoods of luxury sedans, is about to call it quits on internal combustion, but not before going out with a bang. Well, two bangs, with one of them called the CT5-V Blackwing, a 668-horsepower 6.2-liter supercharged V8 sedan with a standard...standard transmission. The other is the CT4-V Blackwing, a smaller 472-HP twin-turbo 3.6-liter V6 sedan that also comes with a stick shift, in keeping with the car gods’ orders. Let’s take a first look at these last hurrahs for high-performance gasoline Cadillacs.