News Release

Passion for Performance

FOND DU LAC, Wis. (Oct. 31, 2017) – For decades, Mercury Racing has been the leader in developing high-performance engines and drives for the harsh marine environment. Its propulsion systems delight recreational boaters and race competitors around the globe. The offering of high-performance crate engines for the automotive aftermarket is a natural progression.

The Fond du Lac, Wisconsin-based company is showcasing its new SB4 7.0 (Small Block Four Valve) automotive aftermarket crate engine this week at the Specialty Equipment Market Association (SEMA) show in Las Vegas. SEMA consists of a diverse group of manufacturers, builders, distributors, retailers and publishing companies. The SB4 was revealed at the 2016 SEMA show where it earned two Global Media Awards.

Designed, developed and manufactured in-house, the naturally aspirated, 7.0 Liter DOHC V8 Small Block Four Valve (SB4) engine features Mercury Racing's exclusive aluminum four-valve cylinder heads and dual overhead camshaft valve train integrated with an LS cylinder block packed with Mercury Racing-designed and specified hardware. This proven valve train, which greatly enhances engine durability over a standard two-valve design, enables the engine to produce a staggering 750 horsepower at 8,000 rpm on pump fuel.

The SB4 is intended for use in pre-1968 muscle cars, street rods and an array of road track and off-road competition vehicles.

SB4 Fast Facts

  • SB4 7.0 engines are sold as turnkey, ready-to-run engines, including a Mercury Racing engine control system. Engine front drive components (alternator, air conditioner pump, pulleys, belts and related brackets) are included.
  • Available accessories include a carbon fiber intake manifold cover and a breather gas separator kit.
    • Carbon fiber intake cover adds instant flare to the top of the engine.
  • SB4 cylinder heads and valve train are available only as part of the complete SB4 7.0 engine.
  • MSRP for the SB4 7.0L engine package is $32,995.


The Mercury Racing nine-liter DOHC V8 Quad Cam Four Valve (QC4) is the quintessential crate engine for unmatched performance, run quality, durability and reliability. Twin-turbochargers optimize power and torque throughout the rpm range.

The 1350 hp QC4 engine is the power within "Tantrum," a 1970 Dodge Charger that has been featured on Jay Leno's Garage and makes a cameo appearance in The Fate of the Furious, the latest installment in the Fast and Furious movie franchise.

Road Trip

This isn't Mercury Racing's first road trip. The late Carl Kiekhaefer, founder of Mercury Marine, revolutionized NASCAR from 1955-57. Kiekhaefer dominated the sport by winning 80 percent of the races he entered and capturing three national championships.

ZR1 Corvette

In 1990, General Motors approached Mercury Marine to produce the all-aluminum, 5.7- liter LT-5 engine for the Chevrolet ZR-1 Corvette. GM came to Mercury for its expertise in the design and manufacturing of aluminum engines for the marine environment. The ZR-1 was a world-class sports car in its day. The DOHC, 32-valve V8 produced 405 horsepower at 5,800 rpm.

21330 – Central Hall

Mercury Racing's SEMA display booth features a working SB4 four-valve cylinder head display flanked by two SB4 7.0 static engine displays, one fully dressed and one cutaway to reveal its exclusive features.

Roadster Shop SB4s

Roadster Shop will feature two fully dressed SB4 7.0 engines. The Mundelein, Illinois based company has been an industry mainstay in performance chassis fabrication and custom car building for over 30 years. They produce innovative, performance-based vehicle specific chassis & suspension components for top tier street rods, trucks and pro-touring muscle cars. Available for immediate delivery, the Mercury Racing SB4 offers Roadster Shop customers a turnkey, fully calibrated high-performance engine package.

A SB4 is fitted in a custom Roadster Shop 4WD IFS Bronco chassis in their Central Hall booth, #C07. Their second SB4 is displayed in their Upper South Hall booth, #30280.

The SEMA show runs Oct 31-Nov. 3.

About Mercury Racing

Based in Fond du Lac, Wis., Mercury Racing, a division of Mercury Marine, is a leading provider of high-performance marine propulsion systems for discriminating boaters worldwide, offering an exciting and fulfilling power boating experience on the water. Using leading-edge technology, Mercury Racing produces high-performance outboards, sterndrives, propellers, parts and accessories. Mercury Racing also produces crate engines for the automotive aftermarket industry. Mercury Marine is a division of Brunswick Corp. (NYSE: BC), the world's leading manufacturer of recreational products, including pleasure boats, marine engines, fitness equipment, and billiards.