Hennessey has sold 12 1000hp Exorcist Camaros, Details on How to Buy (Video)

Hennessey Performance took a Camaro ZL1 that already made 650 horsepower from the factory and decided that was not nearly enough. The resulting package carries a claimed four-figure output, a name aimed squarely at a rival from Auburn Hills, and a price that doubles what the donor car cost. A dozen buyers signed up before most people had even seen one run. Read on for what is actually in the package.

Twelve people had already written the check before most enthusiasts had seen one of these cars make a pass. That is an unusual thing in a corner of the industry where buyers normally want video evidence first and a deposit second. The Exorcist package took a Chevrolet Camaro ZL1 that GM had already engineered into one of the fastest cars it had ever sold and pushed it into a horsepower bracket that used to require a race license and a trailer. Word spread quickly enough that the shop eventually put out a plain-spoken video just to handle the volume of people asking how they could get one built. The number at the center of all that interest is a round one, and Chevrolet had nothing to do with it.

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From 650 Horsepower to a Claimed 1,000

The stock ZL1 arrives with a supercharged 6.2-liter LT4 V8 making 650 horsepower and 650 lb-ft of torque — already the most powerful Camaro Chevrolet had ever put in a showroom. Hennessey’s Exorcist package replaces the factory blower with a larger unit running roughly 14 psi, then supports the additional air with ported cylinder heads, a revised camshaft, long-tube headers, and a high-flow induction system. The claimed result is 1,000 horsepower and 966 lb-ft of torque, a jump of more than 50 percent over a car that was not exactly struggling to begin with.

A Name Pointed Directly at Dodge

The name is not subtle, and it was never meant to be. Dodge had just announced the Demon, a factory-built Challenger engineered for the drag strip and delivered with a certification sticker from the NHRA. Naming a thousand-horsepower Camaro package the Exorcist was a direct piece of counter-programming, and it worked exactly as intended: every piece of coverage about one car ended up mentioning the other. It is worth noting the two took genuinely different approaches, with the Demon built around a narrow drag-racing mission and the Exorcist built as an aftermarket upgrade to an already-broad performance car.

Two Point One Seconds and a Nine-Second Quarter

The performance claims Hennessey quoted put the car in genuine supercar territory: roughly 2.1 seconds to 60 mph and a quarter mile in the high nine-second range. Those are numbers that would have been fantasy for a street-registered coupe a decade earlier, and they arrive without the aerodynamic aids, carbon tub, or seven-figure price of the exotics they embarrass. The catch, as always with cars making this much power on street tires, is that hitting those figures requires a surface and a set of tires that most owners will never have access to on a public road.

Manual or Automatic, and Why It Matters

Buyers could specify either the six-speed manual or a strengthened automatic, and the choice is more consequential than it sounds. A manual gearbox in a car making close to 1,000 lb-ft is asking a clutch to do something clutches were not designed to do, which is why the automatic tends to be the recommendation for anyone planning serious drag strip use. The manual, meanwhile, is what most enthusiasts actually want, because a supercharged LT4 pulling through a stick is an experience that a torque converter simply cannot replicate.

Why the ZL1 Was the Right Starting Point

The ZL1 was an unusually good starting point, which is part of why the package worked. Chevrolet had already fitted the car with magnetic ride control, an electronic limited-slip differential, Brembo brakes, and a chassis developed alongside the 1LE track package. Most aftermarket power builds run into the problem that the donor car’s brakes and suspension were never designed for the added output. Here, the hardware underneath was already engineered for a car meant to run road courses at speed, so the additional power landed on a platform that could handle it.

The Shop Behind the Claim

Hennessey Performance was not a newcomer making a marketing claim. The Texas shop had spent decades building high-horsepower versions of everything from Vipers to trucks, and had gone as far as developing the Venom GT, a purpose-built machine that ran a two-way verified top-speed program of its own. That history mattered to buyers, because a thousand-horsepower claim is only worth something if the shop behind it has a record of cars that survive being driven. Reputation is the actual product in this corner of the market.

The Warranty That Made It Buyable

The support package explains a good deal of why a dozen buyers committed early. Upgrades of this magnitude typically void the factory powertrain warranty, which leaves an owner exposed on a very expensive engine. Hennessey addressed that with its own limited warranty coverage on the completed car, which converts a terrifying financial risk into a manageable one. For someone spending the price of a second car on the conversion alone, that piece of paper is arguably worth as much as the supercharger.

Built at the Peak of an Era

Looking back, the Exorcist landed in what now looks like the final act of the naturally-aspirated-versus-supercharged muscle car era. Within a few years the sixth-generation Camaro was discontinued outright, the Hellcat engines were headed for retirement, and the horsepower conversation had shifted to electric drivetrains making numbers that make 1,000 look ordinary. That timing has done the Exorcist no harm at all. Cars built at the peak of an era tend to be remembered better than the ones built on the way up.

Living With a Thousand Horsepower

The part rarely covered in the coverage is what ownership actually involves. A car making a claimed 1,000 horsepower on street tires spends most of its life unable to use more than a fraction of that output, because traction, not power, becomes the binding constraint at nearly every speed below highway pace. Rear tires become a consumable measured in months rather than years. Insurance carriers ask questions that a stock ZL1 never prompts, and some decline the risk entirely once a modified declared value enters the conversation. Fuel requirements tighten, since a supercharger running that much boost has no tolerance for low-octane pump gas. None of this is a criticism of the package, and none of it stopped a dozen buyers. It is simply the reality that separates the specification sheet from the driveway, and it is worth understanding before rather than after the check clears.

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