Dodge Charger 1970 SpeedKore TANTRUM 9L Twin Turbo

SpeedKore built this 1970 Dodge Charger around an engine that was never meant for the street: a 9.0-liter racing boat V8 from Mercury Marine, twin-turbocharged to 1,650 horsepower. It appeared in The Fate of the Furious and was later gifted to Vin Diesel as a birthday present, and has changed hands for as much as $699,000. Here’s how a marine engine ended up in a muscle car.

We are talking about a custom 1600+ HP 9 liter twin-turbo version, custom Carbon Fiber pieces and trick suspension .. and a lot more!!

SpeedKore didn’t go looking for a car engine when they built this Charger, they went looking for a boat. Under the carbon-fiber hood sits a 90-degree, double-overhead-cam V8 lifted straight from Mercury Marine’s racing boat program, the first time that engine had ever been dropped into a street car. Fed by a pair of 94mm turbochargers and running on 110-octane fuel, it makes 1,650 horsepower, enough to make the six-speed manual and Ford rear end feel almost like an afterthought. This particular Charger didn’t stay a show car for long, either: it appeared in a Fast & Furious sequel and was later gifted to Vin Diesel himself as a birthday present. What does it take to build a nine-liter marine engine into a 1970 muscle car body, and what is it actually worth today?

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A Marine Racing Engine, Repurposed for the Street

SpeedKore debuted the Tantrum at the 2015 SEMA show, where it won the Gran Turismo award. The body panels, including the hood, fenders, door skins, and bumpers, are recast in carbon fiber, with raw weave left exposed up front and a fade-to-black paint scheme moving toward the rear. The interior blends carbon fiber trim with leather and microsuede.

From SEMA Award Winner to Hollywood Screen Time

The 9.0-liter engine, borrowed from Mercury Marine’s racing boat lineup, is backed by a built T56 six-speed manual and a Ford rear end, an unusual driveline pairing for a Mopar-bodied car. The Tantrum appeared as a background car in The Fate of the Furious and was later gifted to Vin Diesel as a birthday present on the set of F9, and has changed hands with an asking price as high as $699,000.

SpeedKore’s Reputation Beyond One Build

SpeedKore built its reputation on this kind of over-the-top execution, supplying multiple carbon-fiber-bodied Mopars to the Fast & Furious film franchise beyond just the Tantrum, and picking up SEMA’s top Gran Turismo honor for a build that blurs the line between show car and functioning street machine. Few shops attempt swapping a marine racing engine into a muscle car chassis at all, let alone make it look factory-clean doing it.

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