Hennessey Blackbird Corvette Hunts The LT6’s Naturally Aspirated Crown With 800 Horsepower
Marcus Vance
2 minutes read
The Hennessey Blackbird Corvette refuses the turbo playbook. Hypercars usually buy horsepower with boost, but this one bets on pure atmospheric breathing. Hennessey has teamed with Ilmor Engineering to build an all-new 6.2-liter naturally aspirated V8. The car sells for $2.5 million, and only 71 examples will exist.
Hennessey Blackbird Corvette Power Targets
Hennessey and Ilmor are chasing 800 to 850 hp from 6.2 liters. Even the bottom of that range tops the Chevrolet LT6 by 130 hp. At 850 hp, the engine would reach roughly 137 hp per liter. Still, that is about 11.8 percent better than the Corvette’s 122.6 hp/l, which makes it a serious bid for the naturally aspirated crown.
Chevrolet did not leave much on the table with the Corvette Z06. Its LT6 uses titanium valves, sodium-filled exhaust valves, and a flat-plane crank. Mid-engine packaging means the Hennessey Blackbird Corvette avoids front-engine compromises. That freedom gives engineers room to rethink induction and exhaust design.
| ⚙️Engine / Powertrain | 6.2L Naturally Aspirated V8, Ilmor-developed (est.) |
| 🐎Power Output | 800-850 HP (est.) |
| ⚡Peak Torque | 600 lb-ft (est.) |
| ⏱️0-60 mph (0-100 km/h) | 0-60 mph in 2.5s (est.) |
| 🚀Top Speed | 210 mph (est.) |
| 🔄Drivetrain / Gearbox | 6-Speed Manual / RWD |
| 💰Starting Price / Est. | $2,500,000 |
Ilmor Brings Racing Pedigree to Hypercars
Ilmor is no newcomer to extreme output. Its roots run through IndyCar, then into F1 and NASCAR programs. Its racing engines already produce up to 1,000 hp at 15,000 rpm. Meanwhile, the Blackbird’s target speed exceeds 9,000 rpm, which suggests serious mechanical headroom. Bore, stroke, and compression remain under wraps.
Speculation on the Naturally Aspirated Future
On paper, 800 hp from 6.2 liters is a headline number. In reality, it must survive dyno sheets, emissions rules, and the brutal demands of a 9,000 rpm redline. Even so, a successful Ilmor build could become the enthusiast benchmark for analog hypercars. Ultimately, only 71 lucky buyers will ever feel it, and every one of those cars is already spoken for.
Marcus Vance
Senior Track & Performance Editor at Auto News Magazine. Veteran automotive journalist specializing in chassis dynamics, apex telemetry, track-day specials, and high-revving mechanical purity.
View all articles by Marcus Vance →
