AUTOMOTIVE CRATE ENGINES
AUTOMOTIVE CRATE ENGINES
WINNING HERITAGE
Mercury Racing has a storied history of success in high performance marine and automotive racing circuits. This all started back in 1955 when Mercury Marine founder Carl Kiekhaefer, entered NASCAR and won 80% of the races his teams entered as well as three national championships. In 1990, General Motors approached Mercury Marine to produce the allaluminum 5.7 liter LT5 engine for the Chevrolet ZR-1 Corvette. That same year, a LT5 powered ZR-1 broke a 50 year old FIA endurance record by averaging 175.9 mph over 24 hours.
PASSION FOR PERFORMANCE
Our goal is to never be comfortable with where we are ? because being comfortable means we're standing still. There's always something new to chase. For decades we've been the leader in developing high performance marine engines and now we are here to take on the automotive aftermarket. It doesn't matter if it's in a boat or a car, our passion for speed and horsepower drives us to deliver the best products possible. We don't just aim to outperform our competitors ? we aim to outperform ourselves.
32-VALVE DOHC LS CYLINDER HEADS
Designed and developed to integrate with General Motors LS series hardware, the aluminum fourvalve head and dual overhead camshaft valve train provide improved performance and durability, versus a standard two-valve design. The head design adapts our proven high-performance valve train to the robust, small-block LS engine family.
Shown on GM LS7
EXHAUST FLANGE
The exhaust flange shape is the same as the stock LS3 with a slighter larger tipped-out angle (.3 degrees more). The bolt hole locations are .53 inches further out and 1.82 inches lower, requiring minimal impact on header design to benefit from the four-valve architecture.
INCREASED PERFORMANCE
Intake and exhaust port flow improves significantly, versus conventional two-valve heads, and creates a tumble airflow pattern for increased performance.
CUTAWAY HERO
FLOW (cfm) FLOW (cfm)
INTAKE PORT FLOW
500
450
400
350
300
250
200
150
0.2
0.3
0.4
0.5
0.6
0.7
0.8
VALVE LIFT (in)
EXHAUST PORT FLOW
300
250
200
150
100
0.2
0.3
0.4
0.5
0.6
0.7
0.8
VALVE LIFT (in)
Mercury Racing SB4
Canted Valve Race
CNC LSX-DR
Stock LS7
Stock LS3
ENGINEERING EXCELLENCE
All engines are designed, developed and handcrafted at Mercury Racing's World Headquarters in Fond du Lac, Wisconsin. Our vertically integrated product development process enables us to create high-output powertrains that are both efficient and reliable. Every engine goes through rigorous validation testing and each one is dyno tested to bring you the highest quality product for the best driving experience.
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