Thirty-five years, thirty-five cars, 850 horsepower
John Hennessey founded Hennessey Performance in 1991. To mark 35 years of stuffing more power into things Ford and Chevrolet didn't think could take it, the Sealy, Texas operation has revealed the Super Venom Mustang — a 35-unit, serial-numbered build series based on the current S650 Mustang GT.
The headline figure is the satisfying kind of round: 850 hp and 650 lb-ft of torque. That's a 70% increase over the donor Mustang GT's 500 hp.
Hennessey doesn't usually do anniversary editions. When they do, they do them in batches of 35. Numbered. Costed. Spoken for.
What 70% more power costs
The press release is light on engineering specifics — Hennessey rarely opens the bonnet in print — but the path is well-trodden: a forced-induction upgrade on the 5.0-litre Coyote V8, a recalibrated ECU, beefed-up cooling, an exhaust system that lets the upgraded engine breathe. Hennessey has been running this play on Mustangs since the SN95 days. They know where the limits live.
The serial-numbered run of 35 is the differentiating commercial detail. This isn't a $20,000 power upgrade on a customer's existing car — it's a complete build with a numbered plaque, a build sheet, and a position in the brand's anniversary record. Hennessey's previous numbered programmes — the Venom 1000 Charger, the Venom F5, the Mammoth 1000 — have all retained value. This one will too.
Why it matters
Mustangs get tuned. That's the whole point of Mustangs. What's interesting about the Super Venom isn't the power figure (Hennessey will sell you more), it's that the company is treating its 35th anniversary as worthy of a halo car rather than a marketing campaign. The Venom F5 hypercar already proves Hennessey can build a car from a clean sheet. The Super Venom proves it knows when not to.
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Sources: Hennessey press release on GlobeNewswire. Reveal date April 8, 2026.