This 1,000-hp Escalade-V Is Hennessey’s Loudest Flex Yet

From 682 to 1,005 Horsepower: Hennessey Unleashes the H1000

Cadillac has given the Escalade a mid-cycle refresh this year, endowing the fifth-generation model and flagship SUV with a new face at the top of the luxury marque’s range. The facelifted models include the V-Series variant, the Escalade-V, which comes with GM’s already potent 6.2-liter supercharged V8, combining outstanding power output with premium comfort.

But if 682 horsepower isn’t enough, Hennessey Performance has brought back the wilder version of its high-horsepower Cadillac Escalade-V. Building on the foundation of its previous Escalade-V tune, the Texas-based tuner has unleashed a refreshed package for the 2025 model year, giving GM’s flagship SUV a monstrous 1,005 horsepower and 882 lb-ft of torque.

Supercharged Mods, Ported Heads, and Red Valve Covers

Dubbed the H1000, this second-generation upgrade jacks up the power and transforms the Escalade-V into a proper hyper-luxury missile, with the 6.2-liter V8 as the starting point. But thanks to a raft of upgrades – including a high-flow supercharger system, ported cylinder heads, a custom camshaft, and a complete fuel and induction system overhaul – Hennessey has pushed the big SUV firmly into four-digit territory.

The list of hardware mods reads like a drag-strip cheat sheet: upgraded throttle body, upper and lower pulleys for more boost, high-flow catalytic converters, long-tube headers, an oversized heat exchanger, and anodized red valvetrain covers for some under-hood flair. Even lifters, push rods, valve springs, and valves have been replaced to handle the increased stress.

As with all Hennessey creations, every upgrade is backed by professional installation, HPE engine calibration, and up to 500 miles of road testing per vehicle.

The Most Unhinged Full-Size Luxury SUV On Sale Today

Performance development is handled entirely in-house at Hennessey’s Sealy, Texas facility, including dyno tuning and real-world evaluation at the Pennzoil Proving Ground. Every Escalade-V that leaves Hennessey’s shop is put through its paces and gets a serial-numbered engine bay plaque, a 3-year/36,000-mile warranty, and the necessary badging

Despite the outrageous performance, Hennessey insists the full suite of factory drive modes remains intact, keeping the Escalade-V as usable as it is fast. That means you can still float through town in plush comfort, or demolish unsuspecting sports cars at highway speeds. Pricing hasn’t been disclosed, but it never is cheap when it comes to more oomph from the American tuner.

This isn’t Hennessey’s first Escalade-V rodeo, but the 2025 facelift gives the tuner a fresh canvas and new opportunities to push the envelope. And with over 1,000 horsepower on tap, this might just be the most unhinged full-size luxury SUV on sale today.