Twin-Turbo Ford Mustang Shelby GT350 Sounds Glorious, Dyno Sheet Reads 825 RWHP

What are you getting for that mountain of cash? For starters, a promise: 802 horsepower at the wheels on 93 octane. This, in turn, should result in 6.43 seconds for the pull from 60 to 130 miles per hour (that's 97 to 209 kilometers per hour in the metric system).

Covered by a 2-year/12,000-mile limited warranty, the 800R twin-turbo package comprises 25 items. The list obviously kicks off with turbochargers, turbo headers, turbo air filters, and blankets for the headers and turbos. The list continues with Fathouse billet coil covers, a coolant tank, a catch can, ID1050x fuel injectors from Injector Dynamics, and wastegates.

A 3.0-inch exhaust system allows the 5.2-liter Voodoo flat-plant crankshaft V8 to breathe out better. An air-to-air intercooler with billet end tanks, billet oil pump gears, downpipes, a blow-off valve, a short-throw shifter with a billet shift knob, and a purpose-built scavenge system also need to be mentioned. The finishing touches come in the guise of Toyo R888R tires, Johnson Tuning dyno calibration, a boost controller, 800R badging, and the owner's manual.

Equipped with a MoTeC M150 engine management system, the GT350 before your eyes made 825 horsepower on 93 octane. How about peak torque? According to the dyno sheet, 622.89 pound-feet (845 Nm). Not for the faint of heart, for sure!

Be that as it may, Fathouse Performance can do better. The most ludicrous package they sell for the S550-generation Shelby GT350 is the 1400R, which – similarly to the 800R – is a twin-turbo affair. The turn-key price is $169,999, which is the kind of money that would otherwise get you a loaded Z06.

Fathouse Performance has yet to unleash any go-faster package for the 2024-plus Ford Mustang Dark Horse, but the tuner did confirm that the S650 will be treated to a couple of turbos and upwards of 1,000 horsepower. The 1000R package was teased in the form of a rendering back in September 2022, yet no further information has been released about it since then. Over at FoMoCo, the S650 is preparing to welcome forced induction for the 2025 model year in the form of the Mustang GTD.

Assembled by Multimatic in Canada rather than Ford in Flat Rock, the GTD is advertised as a track-ready brute with Mustang soul. The soul in question is most obvious from the design and the 5.2-liter Predator hiding under the hood. In this application, the cross-plane V8 produces in excess of 800 horsepower.

Of course, said engine will carry over to the Shelby GT500. It's likely that Ford will reintroduce the Shelby GT500 as a 2026 model. Later on, hearsay suggests that a Raptor-ified version will join the party as the more reasonably priced alternative to the Lamborghini Huracan Sterrato and Porsche 911 Dakar.