Introducing the all-new

Mercury Racing SB4 7.0 crate engine.

• 750hp
• 8000 rpm rev limit
• 428 cu in

32-VALVE DOHC CYLINDER HEADS

Naturally aspirated

Designed, developed and manufactured in-house, the 7.0 Liter SB4 engine features Mercury Racing’s exclusive aluminum four valve cylinder heads and dual overhead camshaft valve train integrated with a General Motors LS cylinder block packed with customized Mercury Racing hardware.

https://www.youtube.com/watch?v=2YuUsLZ54Uo

Full Specifications

TRANSMISSION RATED POWER (HP(KW) 750/559 @ 7500 rpm
REV LIMIT SPEED 8000 rpm
CYLINDERS/ENGINE CONFIGURATION V-8, 32-Valve Double Overhead Cam (DOHC)
VALVE ACTUATION Shaft Mounted, End Pivot Finger Follower with Mechanical Lash Adjustment
DISPLACEMENT (CID/L) 428/7.0
BORE (IN/MM) 4.125/104.775
STROKE (IN/MM) 4.0/101.60
COMPRESSION RATIO 11.7:1
INDUCTION SYSTEM Naturally Aspirated with Twin Electronic Throttle Bodies
FUEL SYSTEM Sequential Port Fuel Injected (SPFI)
FUEL REQUIREMENTS Unleaded 91 Octane (R + M/2)
IGNITION SYSTEM Individual Coil on Plug, with Integrated Drivers
CHARGING SYSTEM Fully Regulated Belt Driven – 165 Amp (2327 Watt)
CONTROLLER Mercury Racing PCM
COOLING SYSTEM Water Cooled with 160-degree (71 C) Thermostat
LUBRICATION SYSTEM Wet Sump w/4th Gen Camaro LS1 Pan, GM High Volume Oil Pump
OIL REQUIREMENT Synthetic 10W-30 API Service Classification SL, SM, or SN
OIL CAPACITY WITH FILTER (QTS/L) 7/6.6
TRANSMISSION Engine is Capable of Operating with Customer Supplied Manual or Automatic Transmission
LENGTH (FROM BACK OF BLOCK TO FRONT OF ENGINE – CRANK PULLEY) (IN/MM) 27.1/688
WIDTH (ACROSS TIMING BELT COVER) (IN/MM) 30.25/769
WIDTH (ACROSS REAR OF CYLINDER HEADS) (IN/MM) 29.1/740
HEIGHT (FROM CRANKSHAFT CENTERLINE TO TOP OF THROTTLE BODY MOTORS) (IN/MM) 17.1/435
WEIGHT (WITHOUT ACCESSORY DRIVE) (LBS./KG) 498/226
WARRANTY 12-Month Limited

FAQ's

What is peak horsepower and torque for the SB4 7.0? The SB4 7.0 is 750 horsepower at 7,500 RPM, and peak torque is 545 ft lbf at 6500 RPM
Should I get my SB4 7.0 broken in on a dyno? Mercury Racing does not require the SB4 7.0 to be broken in on a dyno; however, break-in instructions provided in the owner’s manual should be followed.
What is the SB4 7.0 warranty? The SB4 7.0 has a 12-month limited warranty for material defects and workmanship. This warranty applies to use in the United States only, and only for on-highway use for transportation purposes.
What accessories will I need to get my SB4 7.0 running? Front drive components (alternator, air conditioner pump, pulleys, belts and related brackets), starter and flywheel are all sold separately. Mercury Racing offers a front-end accessory drive kit, part number 8M0136147 which consists of the necessary brackets, fasteners, belts, idlers, and pulleys to attach components such as the power steering pump (which is included) and an alternator and optional air conditioning compressor (which must be sourced elsewhere).

Recommended aftermarket alternator, starter and air conditioning compressor:

• Alternator: Powermaster, part number 58247

• Starter: AC Delco, part number 89017847

• AC Compressor: AC Delco, part number 1522274

What color options are available for the SB4 7.0? The SB4 7.0 engines are shipped paint ready, as most of the time, builders prefer to custom paint engines and covers to match the car.
Can the SB4 7.0 be installed on vehicles that are driven on public roads? Yes. The SB4 7.0 may be used on vehicles driven on public roads; however, installation is restricted to pre-1968 model year road vehicles due to U.S. emissions regulations.
Can the SB4 7.0 be used in an off-road vehicle? Yes; however, the limited warranty only covers on-highway use.
Is the SB4 7.0 in compliance with emissions standards? The SB4 7.0 complies with pre-1968 model year U.S. emissions regulations for automobiles.
Is there an increased height with the SB4 7.0 vs. a standard LS7 package? The SB4 7.0 is approximately ½” taller than an LS7, as measured from crank centerline to the highest point on the engine, when the SB4 7.0 is equipped with the optional carbon fiber intake manifold cover. When not using the optional cover, the engine is only 0.080” taller than an LS7.
Are the heads available for purchase separately? No. The heads and valve train are only available as part of the complete SB4 7.0 engine.
Does the SB4 7.0 use the same mount locations as the LS7? Yes. The SB4 7.0 uses an LS7 block, sourced from GM. As such, the block mount pads are identical to a stock LS7.
What are the fuel requirements for the SB4 7.0? The SB4 7.0 requires 91-octane (R+M/2) or 95 RON pump fuel.
What oil is recommended for the SB4? For warm weather use, the SB4 7.0 requires a premium synthetic 15W-50 motor oil, such as Mobil 1 or Red Line. An acceptable alternate oil is Mercury Racing’s Synthetic Blend 25W-50 4-Stroke Engine Oil. For cold weather use (under 40°F), Mercury Racing recommends a premium synthetic 5W-40 heavy duty diesel engine oil, such as Shell Rotella T6 or Mobil Delvac 1.
Can I run a dry sump? Does it affect the warranty? The engine may be adapted to a dry sump lubrication system. Mercury Racing does not sell a system, and the end customer will likely need to fabricate parts to fit up any existing aftermarket dry sump systems. General Motor’s LS7 factory dry sump system will not fit on the SB4 7.0. Any lubrication related failure from such a modification would not be covered under the limited warranty.
What should I run for air intake? Air intake systems are unique to each vehicle, and builders are responsible for the design, fabrication and routing of the intake duct(s). Mercury Racing does require the builder provide a ¾” hole for placement of the intake air temperature sensor. Specifics are called out in the Operation and Installation Manual.
What are the exhaust requirements? Exhaust is not provided as each application is unique and builders typically source or customize their own exhaust components. To achieve maximum horsepower, Mercury Racing recommends a dual exhaust system with headers. Collector and exhaust pipe diameter should be 3.5”. Header primary tube diameter should be 2”, with a length of 32”.
What is the dry weight SB4 7.0? The SB4 7.0 weighs 498 pounds, or 226 kilograms. This weight does not include the front-end accessory drive system.
What are the cooling system requirements? The customer must size and fit a radiator to their vehicle, as appropriate, for a 750 hp engine. SB4 7.0 uses a General Motors LS water pump, with standard 1.25” outlet and 1.50” inlet hose fittings. This water pump also has fittings for attachment to a pressurized GM style surge tank and a heater core (5/8” outlet and 3/4” return).
Do I have to run the Mercury ECM? No. However, the SB4 7.0 is designed to be a complete, drop-in high-performance engine package, fully calibrated and ready to go. The customer may use a different ECM and do their own programming, but the SB4 7.0 warranty will be void.
Why Should I Consider a Mercury Racing SB4 7.0 Crate Engine? The Mercury Racing SB4 7.0 was designed, developed and manufactured in-house by Mercury Racing engineers and technicians. The naturally aspirated, 7.0-liter DOHC V8 engine features Mercury Racing’s exclusive aluminum four valve cylinder heads and dual overhead camshaft valve train integrated with an LS7 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 7500 RPM on pump fuel. The SB4 7.0 is intended for use in pre-1968 muscle cars, street rods and an array of road, track, and off-road competition vehicles.

Unlike other crate engines, the SB4 7.0 is a completely programmed, ready to run performance package straight out of the box.

Click Here To Order The Mercury SB4 7.0