Mercury Racing has revealed its new SB4 7.0, a small block four valve, automotive aftermarket crate engine, at the opening of the Specialty Equipment Market Association (SEMA) show in Las Vegas.

In-house designed, developed and manufactured, this 7.0 Liter engine features Mercury Racing’s exclusive aluminum four valve cylinder heads, and dual overhead camshaft valve train integrated with a LS cylinder block packed with Mercury Racing spec hardware.

This proven valve train, which greatly enhances engine durability over a standard two-valve design, enables the engine to produce a staggering... 775 horsepower (!) at 7500 RPM on pump fuel.

This new motor has been developed utilizing 3D simulations and analyses on airflow, cooling, fuel and lubrication systems. Intense finite element analysis studies have been conducted on the head, block and rotating components, to ensure efficiency and reliability. 

The different benefits of the DOHC four-valve design versus the typical LS pushrod layout include:

• Improved intake and exhaust flow enables increased engine performance
• Efficient, high tumble four valve combustion
• Low mass, high stiffness design reduces stresses and enables smooth high RPM operation and long life
• Improved drivability due to optimized camshaft timing at comparable horsepower levels

Mercury Racing is the sole manufacturer in the high performance powertrain business. The company designs and develops fully integrated systems, such as own electrical and engine management systems.

The new SB4 7.0 engines are available as turn-key, ready to run engines featuring Mercury Racing’s proprietary engine control module and electrical harness. They come unpainted to allow builders to color match engines with the vehicle. Exhaust is not included. 

A Dodge Charger 1970

A SB4 7.0 is featured in their development vehicle, a mid engine Ultima GTR Supercar. Mercury Racing displays one of SpeedKore’s most popular builds to showcase their potent QC4 1650 crate engine. Deemed TANTRUM, the 1970 Dodge Charger earned a Gran Turismo award for best domestic build at SEMA last year.

Speedkore’s impeccable carbon fiber work, featured throughout the car, was one of many unique highlights that caught the attention of the judges and media alike. From there – the car was sent to Los Angeles for multiple photo sessions and video shoots – culminating with a feature on Jay Leno’s Garage.

Timing is everything. Shortly after the Leno show - the Mercury Racing powered Charger was requested for filming of the next movie in the Fast & Furious franchise. TANTRUM will be seen in the upcoming Fast and Furious film !