A New Power Couple

Mercury Racing partners with Roadster Shop to distribute 750 hp SB4 7.0 engine for custom automotive applications.

November 21, 2017
Mercury Racing SB4
Roadster Shop featured a Mercury Racing SB4 engine fitted in its all-new RS4R — a full independent front-suspension 4WD chassis developed for 1966-77 Ford Bronco SUVs. Roadster Shop

Mercury Racing has announced a partnership with Roadster Shop of Mundelein, Illinois, for the distribution of its SB4 7.0 (small-block, four-valve) automotive aftermarket crate engine. The 32-valve DOHC SB4 7.0 engine adapts Mercury Racing’s proven high-performance valve train to a customized LS-based engine that produces a staggering 750 naturally aspirated horsepower.

Designed, developed and manufactured in-house, the naturally aspirated 7.0-liter DOHC V-8 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 hp 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 7.0 engine package is $32,995.


Roadster Shop has been an industry mainstay in performance chassis fabrication and custom car building for more than 30 years. It produces innovative performance-based, vehicle-specific chassis and suspension components for top-tier street rods, trucks and pro-touring muscle cars. The Mercury Racing SB4, available for immediate delivery, offers Roadster Shop customers a turnkey fully calibrated, high-performance engine package.

Mercury Racing SB4
Mercury Racing’s advanced four-valve cylinder-head combustion system and dual overhead camshaft valve train provide significantly improved performance and durability compared to a standard two-valve design. Mercury Racing

Water Gene
“Being avid powerboaters for three generations, we are extremely familiar with Mercury Racing’s offshore marine products and the incredible rigors they are built to withstand while maintaining top-level performance. We are excited to partner with a company that can provide that level of durability in a 750 hp automotive engine package,” said Jeremy Gerber, Roadster Shop vice president of operations.

Roadster Shop owner Phil Gerber agreed.


“We are excited to partner with Mercury Racing on bringing the SB4 engine to the hot rod industry. The SB4 is an incredibly unique package that fits perfectly with the direction of high-end custom cars being built today. This engine will certainly be a game-changer, and we couldn’t be more thrilled to be a part of it.”

The feelings from Mercury Racing are mutual.

“We are excited to partner with Roadster Shop,” said General Manager Erik Christiansen. “They are highly respected and passionate veterans of the automotive aftermarket industry. Our capabilities are complementary, and we appreciate their approach to providing innovative, high-quality products and services.”


The Roadster Shop display at the recent SEMA Show in Las Vegas featured a Mercury Racing SB4 engine fitted in its all-new RS4R — a full independent front-suspension 4WD chassis developed for 1966-77 Ford Bronco SUVs.

Call 847-949-7637 or email [email protected] for additional information.


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