Mercury Racing Reveals SB4 7.0 Automotive Crate Engine

The all new Mercury Racing SB4 7.0 automotive crate engine.
The all new Mercury Racing SB4 7.0 automotive crate engine.


Greetings from Las Vegas! We are here for the 50th Anniversary SEMA Show where we just revealed our latest automotive aftermarket crate engine, the SB4 7.0. The 32-Valve DOHC V-8 was designed, developed and manufactured in-house.

The 32-valve cylinder head and DOHC valve train design is a decendant from our 9.0 QC4 engine platform.
The 32-valve cylinder head and DOHC valve train design is a decendant from our 9.0 QC4 engine platform.

The naturally aspirated, 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 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 8000 RPM on pump fuel!

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

Engineering Excellence

Mercury Racing is unique in the high performance powertrain business in that we design and develop fully integrated systems.

Mercury Racing is unique in the high performance powertrain business in that we design and develop fully integrated systems. We even go as far as developing our own electrical and engine management systems. Our proprietary powertrain control module, featuring internally written software, provides the opportunity for customization and application specific needs.

Computational Fluid Dynamics (CFD) and GT-Power engine performance simulations were used to develop an optimized intake manifold featuring dual throttle bodies for maximum power and efficiency.

The Mercury Racing SB4 7.0 was developed utilizing 3D simulations and analyses on airflow, cooling, fuel and lubrication systems. Intense finite element analysis (FEA) studies were conducted on the head, block and rotating components to ensure an efficient and reliable powertrain.


Tests are conducted to calibrate engine management systems, evaluate in-cylinder combustion, and measure timing drive dynamics and torsional excitation, just to name a few

Prototype testing is where the rubber meets the road. Mercury Racing conducts fired engine, motored engine, and dynamic rig testing. Tests are conducted to calibrate  engine management systems, evaluate in-cylinder combustion, and measure timing drive dynamics and torsional excitation, just to name a few. Mercury Racing people, capabilities, and facilities are recognized through ISO 9000 and EU RCD certifications.

Dressed to Thrill

SB4 7.0 engines are sold as turn-key, ready to run engines. This includes a Mercury Racing engine control system and custom styled engine cover with SB4 7.0 cover graphics. Exhaust and engine front drive components (power steering, alternator, air conditioner pump, pulleys, belts and related brackets) are not included.


An engine front drive accessories kit is available. The kit 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 or air conditioning compressor (which may be sourced elsewhere).

SB4 7.0 compatible aftermarket alternator and air conditioning compressor:

  • AC Compressor: AC Delco ~ PN: 1522274
  • Alternator: Powermaster ~    PN: 58247

An Analog Gauge Interface (AGI) kit, compatible with both digital and analog gauges, is also available.

Show & Go

The SB4 7.0 development vehicle - a 2001 Ultima GTR supercar.
The SB4 7.0 development vehicle – an Ultima GTR supercar.

This is our fourth consecutive SEMA show.  Our main booth, #37005, is located in the Upper South Hall of the Las Vegas Convention Center. An SB4 7.0 is featured in their development vehicle, a mid engine Ultima GTR Supercar. The Ultima is flanked with two SB4 7.0 static displays, one fully dressed and one cutaway to reveal exclusive features. A fully dressed SB4 7.0 is also displayed in SEMA’s New Product Showcase, also in the Upper Show Hall.  Edelbrock, booth #22643 Central Hall, is displaying the SB4 cylinder head they cast for us.

TANTRUM is a SEMA 2015 GT Awards - Best Domestic Build, was featured on Jay Leno's Garage and will be seen in the the nxt Fast and Furious movie - Fast8. In US theaters, April 14, 2017.
SpeedKore’s TANTRUM, a 1970 Dodge Charger powered by a one thousand, six hundred and fifty horsepower Mercury Racing QC4 crate engine.

We are proud to display one of SpeedKore’s most popular builds to showcase our 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 – Fast8. In US theaters April 14, 2017

The SEMA show runs Nov. 1-4.

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33 thoughts on “Mercury Racing Reveals SB4 7.0 Automotive Crate Engine”

  1. I presently run your 525 ci in my 27 Daytona do you have any plans for the boating market as a non blower motor like the 525. This could be a great reliable “run it like you stole it”motor with a XR drive package.Let me know thanks.

    1. Joe:
      The new 540 is a perfect re power candidate for the 525. Booth are very similar in total power output. The 540 far exceeds the 525 in terms of torque – as it is bored out to 8.6 Liters.

  2. Congratulations gentlemen! What are the torque figures on this exciting engineering feat, or simply put . . . eighth wonder?

    1. Hi John.
      Thanks. Yes – we are excited to get the SB4 7.0 in production. The engines produces 571 Lb.Ft. @ 7500 rpm.

  3. I am the original owner of a 1990 Corvette ZR-1. Thanks for building the awesome LT5 in my car. Will your SB4 7.0 fit in my car and bolt up to the ZF 6 speed? Thank you, Tracy

    1. Hi Tracy. Thank you for your kind comments regarding the LT-5. The SB4 7.0 would fit in your ZR-1. However, due to emissions regulations, it is only certified to be used in 1976 and older road vehicles.

      1. True… I import vehicles as a side business/hobby & I like to think I know the NHTSA/DOT/EPA regs well, although there are still some issues state to state getting something registered… Ie stay away from CA!

        Technically, he can make it an “off road use only” vehicle? Like a track car?

        If it was me, I’d leave the original ZR1 alone, it’s likely a future classic! U can pick up a “standard” V8 Corvette from the same era for next to nothing! Buy a used Corvette & modify that! (IMHO)

        Mercury, NICE JOB! so I’m guessing, going by the “Tantrum”, the stock bottom end will handle turbos without an issue?

        Do u do custom builds? Ie forged pistons & H-beam con-rods for a more “bullet proof” bottom end? I also wonder what a flat-plane crank would do? There r a few companies that make a custom LS crank.

        I m not a Chevy/GM guy, but I’ve always wanted to put an LS in “something”… I’ve been wanting to put one in a Range Rover Classic (pre ’95). That said, the Ford Coyote with its twin overhead cams I’m intrigued w/ too.

        But I guess u just fixed any issues I may have have! A twin overhead cam LS!

        Too bad u don’t sell the heads separately, although I understand. I probably shouldn’t say this (you’re likely to raise the price now!), but the cost is pretty competitive when u compare it to something like an LS7, LS9 or LSA direct from GM Performance.

        So, what tranny do u recommend? Does it bolt up (without an adapter) to something like a Tremec 6-speed? The Corvette uses a transaxle, not sure what (manual) tranny is in the Camaro.

        Once again, NICE JOB! Now how about doing something with the Falconair V12 LS? or the custom CNCed “Devel V16”? (Also “Just” an LS

        1. Thanks for the kind comments. I used to own a 1970 Series II-A Land Rover 88″ Station Wagon. I would love to restore one of those or a 1990’s vintage Defender 90 with our 750 h.p. SB4. The SB4 is available as a turn-key engine through our partner Roadster Shop. The SB4 may be used in 1968 and previous model year production vehicles as well as any racing vehicle. The engine featured in Tantrum is our larger QC4 engine platform. This is a DOHC twin turbocharged – all aluminum V-8 engine. the one in Tantrum puts out 1350 h.p. We do not do custom builds. The SB4 is based off the Chevy LS cylinder block and thus it will fit up to any transmission designed for the LS as long as it is rated for the horsepower and torque. Roadster Shop will be able to answer any fitment – technical questions you may have. Good luck with your Range Rover project.

  4. This is absolutely brilliant !

    Superb engineering package – it’s about time the automotive aftermarket performance world was treated to Mercury Racing and the truth behind off-shore racing prowess.

    This package will take serious boost and live… it has Drag Week written all over it.

  5. Hi, I have ordered an Ultima Evolution kit which will be delivered in March 2017. I have not ordered the engine yet, can you please email me more info on the SB4 and what is required to have it fitted to an Ultima and if you are able to provide the additional parts for it to be a turn key installation.

    1. Hi Chris:
      We cannot provide any additional parts needed to make a turnkey Ultima installation. You will need to fabricate engine and trans mounts (the SB4 7.0 is longer than a pushrod LS due to the timing drive, so the engine sits further back). You will also need have custom headers and exhaust built, and have custom half shafts built. We used a trans axle from a Ford GT, which is overkill for the SB4 (but was appropriate for a QC4).It is also no longer available for purchase. A more typical Ultima solution may be an inverted Porsche trans axle. You would need to beef the trans axle up with aftermarket internals that you would use with an over 700 hp engine. Headers can be sourced from any competent header builder; we used GP Headers. Half shafts came from the Driveshaft Shop. The FEAD (accessory drive) will also need to be modified to delete the power steering pump.

      Hope that helps.

  6. What a great engine! Will this fit a 4th generation f-body (Firebird/Camaro)? My car is setup for road course duty so is an ARE type dry sump setup adaptable/available? Is any typical LS clutch and transmission adaptable? Sorry for all the questions but your creation is very exciting.

        1. Hello Ilario,
          The SB4 7.0, due to exhaust emissions regulations, can only be installed in 1968 or older vehicles.

          1. Thank you for your reply Rick. The car is only for off road use, so emissions are not a concern. Will the engine physically fit? I’d mainly be sceptical about room for the headers clearing the sides of th engine bag. Is the engine wider at the head exhaust ports than an LS7? Does your SB4 accept common LS headers?

          2. Ilario:

            For installation information – I will refer you to SpeedKore Performance Group – our exclusive SB4 7.0 distributor. Call 262-421-8612 and select Option 2; Engine Integration.

  7. What are the plans for doing a top-end kit for those of us with a 7.0 engine already? And what kind of pricing would it be?

    I’m building a ’90 ZR1 track car with a LS3-based Katech 427…this setup would sure look nice sitting in the engine bay of my car 😉

    1. Hi Joe. There is a possibility we may offer a LS head kit in the future. We first want to get the complete SB4 7.0 engine released and in the field.

  8. is your company or will they ever consider building an emissions approved LT-7 version of the sb4 with GM in the future for an outrageous LM version of a c8 or c9 midengine corvette?

    1. Hi Robert:
      That would be cool. We produced the DOHC LT-5 for the ZR1 Vettes back in 1990 to 1995. We would love to have the opportunity to do that again.

    1. Hi Nasser. its a Chevy LS7 cylinder block and so it will fit any transmission that will bolt up to the Chevy bell housing. The SB4 puts out a max torque of 570 ft*lbf.

    1. Brett:
      See the SB4 intake port and exhaust port flow illustration. There are 2-valve heads out there that have more peak flow than us, but we outperform them on low to mid-lift flow. Additionally, the low mass and the design of our valve train (curved contact finger follower) enable us to open the valves much faster, while maintaining durability, compared to the 2-valve head. Our combustion chamber volume is 71.2 cc.

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