The biggest, baddest engines need the biggest, baddest bumpsticks and Blackbird Performance Products now has one available for VVT G3 Hemis with the latest addition to their Mach cam lineup.
The Mach 4 is a solid roller monster with a card that cites 0.726” of valve lift and an intake centerline of 113 degrees. Intake and exhaust duration at 0.050” are 260 and 280 degrees, respectively. Yeah, that’s rowdy.
“This Mach 4 cam is a solid roller cam that was developed specifically as we developed the Race Spec 1,650+ HP supercharged engine,” says Blackbird’s Geoff Turk. The evidence is on the dyno sheet as one of those 1,650+ HP engines recently hit 1,676 horsepower when topped with a Whipple 3.0L supercharger.
But it’s not just for pressurized applications; the Mach 4 has also been tested in big naturally-aspirated (NA) engines with great results. A carbureted 420 cubic-inch NA motor netted quite the sustained plateau of power with 800 horsepower from 7,000 RPM through 8,200 RPM. “These are the kinds of numbers and horsepower figures that accelerate vehicles versus high peak numbers with lower numbers behind them,” says Turk.
The Mach 4 should pair perfectly with Blackbird’s soon-to-be-released adjustable rocker setup that debuted at PRI in December 2025. That package is expected to be priced around $2,500 which is sure to turn some solid roller dreams into reality.
