If the word “excess” isn’t in your vocabulary — but the words “more” and “power” are — then give John Hennessey a call. His firm already builds modified Cadillac CTS-Vs capable of cranking out as much as 800 horsepower, but the company is readying a 1000-hp package for a limited production run of coupes. Meet the new Hennessey Twin Turbo V1000 CTS-V Coupe.
On Hennessey’s 700-hp CTS-Vs, the 6.2-liter V-8 retains its stock supercharger, but gains a new pulley that increases boost from 9 to 13.5 psi. Heads are ported, a larger camshaft installed, and respiration is improved courtesy of a cold air intake, long-tube exhaust headers, and high-flow catalytic converters.
Predictably, the 1000-hp package is a little more extreme — and so is the list of modifications. Step one? Ditch that sweet supercharged LSA in favor for a GM LS-based 7.0-liter V-8. That engine is not only balanced and blueprinted, but it receives low-compression pistons, upgraded cylinder heads, camshafts, and fuel delivery components; and a multitude of internals fabricated from forged steel. Hennessey still blesses the car with forced induction, but the supercharger is ditched in favor of a pair of turbochargers and an air-to-air intercooler. Power comes in at an incredulous 1000 hp, and Hennessey says the peak torque is now in the neighborhood of 950 lb-ft. Yikes.
As it should come as no surprise, that sort of power requires upgrading a number of other components on the car. For starters, transmissions — you still have your choice of a six-speed manual or automatic gearbox — are beefed up to handle that stump-twisting torque. Hennessey upgrades the stock Brembo brake system by adding 15.1-inch carbon ceramic discs at all four corners, and adding eight- and six-piston calipers in front and back, respectively. Also requisite are a set of massive Hennessey monoblock 20-inch wheels — measuring 10 inches wide up front and 13 inches across out back — wrapped in super-sticky Michelin Pilot Sport rubber.
Gearheads fawn over the tech specs, but we’re also knocked back by the looks. Henessey flared the fenders, lowered the ride height by one inch, and enlisted GM’s former in-house hotshoe — John Henricy — to help retune the magnetic ride control suspension. The wide, muscle-bound stance reminds us somewhat of race-spec CTS-V Coupes that compete in SCCA’s World Challenge GT series, but with a lot — and we mean a lot — more power.
Only 12 Hennessey Twin Turbo V1000 CTS-V Coupes will be produced – and unlike its less powerful siblings, the end product won’t pass emissions tests in all 50 states. If it’s any consolation, Hennessey claims the V1000 will reach 60 mph in 3.5 seconds, blaze through the quarter mile in 10.9 seconds with a 136 mph trap speed, and top out at 230 mph.
There’s no word yet on pricing, but the cost of owning one of a dozen 1000-hp Cadillac coupes includes a one-day training/track experience with Mr. Heinricy and a one year/12,000 mile warranty. Time to start saving your pennies…