Jay Leno Experiences Mercury Racing Power

Jay Leno has the opportunity to get behind the wheel of the most powerful and exotic cars money can buy in his show “Jay Leno’s Garage”, causing feelings of envy and desire among his viewers.  The former “Tonight Show” host has turned his passion for cars into the popular web series, which gives a detailed look at the newest European supercars to great American classics.

One of the classics recently featured was a 1970 Dodge Charger, built by our friends at SpeedKore in Port Washington, Wisconsin.  The “Tantrum” Charger is the first automotive application of Mercury Racing’s QC4 platform and based on its performance, it surely won’t be the last.


Mercury Racing launched the QC4 platform in 2010 as a high-performance offshore marine engine capable of exceeding the demands of the grueling racing environment.  This modern powerplant features dual overhead cam (DOHC) 32-valve heads on top of a 9.0 liter aluminum block.  The massive air flow of the heads is increased even further by two 94-mm turbo chargers, delivering upwards of 1650 horsepower on race fuel.  After years of success as both a marine racing and pleasure engine, the team at Mercury Racing decided it was time to develop something car guys would crave.


At the SEMA Show in 2013, we featured the QC4 shoehorned into an Ultima GTR kit car that was used internally as a development vehicle.  The Ultima allowed us to perform calibration changes required to transition from water to pavement.  These changes included delayed turbo activation to make the car more drivable at lower speeds.


001-jay-lenos-garageWhile showing the automotive world our engineering prowess at SEMA, we also laid the foundation for the Tantrum by meeting Dave Salvaggio, builder of the Charger. After nearly two years of working together, the completed Charger was first displayed at SEMA 2015.  After winning a Grand Turismo design award at SEMA, the Charger headed further west so the comedian could climb behind the wheel.
Leno was rightfully blown away at the beauty and performance of the QC4 engine, and perhaps a bit humbled by its full potential (It’s not often he relinquishes the key for the show’s customary burnout).  The QC4 hits all the right notes for a modern crate engine for high end car builders.  It is unique, modern, reliable, attractive and most importantly it provides an answer to every car guy’s visceral desire for more power.

Watch the Jay Leno’s Garage episode below to learn more about the QC4 powered Tantrum and see the QC4 in action on the California roadways.

For more information on automotive crate engines visit www.mercuryracing.com/automotive.

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2 thoughts on “Jay Leno Experiences Mercury Racing Power”

  1. How come there is NO information available ANYWHERE about the 4v DOHC cylinder heads that Mercury Racing is allegedly selling for installation onto the GM LS V-8 platform?
    Saw an installation in a vehicle at the PRI show Dec 11 2015, and was told that heads would be available for sale by March 2016. But, still no information.
    Thank you for your time and co-operation.

    Jersey Danny
    Arnold Performance Engines

    1. Hi Danny:
      We are preparing to offer a complete small block crate engine featuring the SB4 (Small Block Four Valve) cylinder heads which is targeted for a Fall 2016 release.

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