Hennessey’s H1000 Cadillac CT5-V Blackwing Is The Fastest Combustion Luxury Sedan On The Planet

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Hennessey has officially started upgrading Cadillac CT5-V Blackwing models with its H1000 package, giving the sports sedan an enormous power bump and transforming it into an absolute animal. You can keep your BMW M5s and Mercedes-AMG E63s – we’ll take a CT5-V Blackwing from Hennessey any day of the week.

The CT5-V Blackwing leaves the factory with a supercharged 6.2-liter V8 producing 668 hp and 659 lb-ft (893 Nm) of torque. Customers are then offered the choice of either a six-speed manual or a 10-speed automatic. Regardless of the transmission, both versions can hit 60 mph (96 km/h) in around 3.5 seconds and continue through to 205 mph (330 km/h).

Not satisfied with those figures (as always), Hennessey’s team of engineers has comprehensively modified the LT4 V8, porting the cylinder heads, revising the intake and exhaust valves, installing improved lifters and pushrods, equipping the Cadillac with oversized heat exchangers, and also installing long-tube stainless steel headers. Ensuring all of the changes work in unison is a custom ECU calibration.

Read: Hennessey Turns The Cadillac CT5-V Blackwing Into A 1,000-HP Cruise Missile

The result is a combined 1,000 hp and 966 lb-ft (1,309 Nm) of torque at the crank. Hennessey recently performed a series of dyno tests on its first CT5-V Blackwing H1000. The car, finished in a striking shade of blue, pumped out 841 hp and 765 lb-ft (1,037 Nm) of torque to the rear wheels. The tuner says its modified CT5-V Blackwing can hit 60 mph in around 2.5 seconds, storm down the quarter mile in 10.1 seconds, and exceed the car’s standard 205 mph (330 km/h) top speed.

“Cadillac’s CT5-V Blackwing, fitted with GM’s supercharged LT4, was a natural candidate for our EXORCIST upgrade as it improves power considerably without affecting drivability,” John Hennessey described. “Resurrected as an ‘H1000’, the four-door Cadillac is the fastest combustion-only luxury sedan on the planet. It is a rare high-water mark in a segment that will vanish by the decade’s end.”