This Powerstorm Street Series short block is designed for your 4 valve 5.4 liter Shelby with the iron block.  A big upgrade over the weak stock components this engine will be fine up to 700 HP. We start with a brand new Ford iron 5.4 liter block and add Powerstorm pistons, rods and Ford Racing crank. The Powerstorm Street Series product line is built for customers with budget and value as a top priority. These products are built using the same standards and quality as any Powerstorm product but with parts and service options more geared around value. These products utilize components that are targeted at the specific application they are intended and are not meant as one size fits all product line. In most cases the applications for the Powerstorm Street Series product line are street oriented vehicles that are not heavily modified and see infrequent track time. By adhering to specific design goals for the products Powerstorm is able to produce a high quality product that meets a very specific requirement for both power capabilities and durability while still being affordable for the budget minded performance enthusiast. If you are looking to make more power, take a look at our Powerstorm Pro Series or Powerstorm Race Series short blocks too. For more details just click on the Product Information tab above. If you need some help in choosing which short block fits your needs best just give us a call. 313-561-5500

Note; shown with optional piston coating, done at an extra charge. 

Short Block

Livernois Motorsports cylinder head and valvetrain components are made in the USA and include dyno-proven cam profiles, valve spring kits, push rods, rocker arm braces, displacement on-demand eliminator kits, cam phaser lockouts and cam phaser limiter kits, as well as our full line of CNC-ported cylinder head offerings. All items are designed to meet stringent requirements for power, performance and durability, while requiring little-to-no modifications.

About Livernois Motorsports

Livernois Motorsports & Engineering has become best-known for revolutionary tuning and high-end performance products for late model Ford, Mopar and GM vehicles. The company is proud of its deep roots in the automotive and motorsports industry dating back to its original founding in 1949. Since then the company has expanded its product line to include tuning and performance components for desert racing, SCCA and drag racing. Livernois Motorsports is proud to engineer, test and manufacture its products in the USA.

Street Series Details & Specifics

Main Bearing Clearances

Main bearing clearance is carefully set on each and every engine. Ensuring proper bearing clearance, along with proper bearing crush are critical for engine performance and durability.

Rod Bearing Clearances

Another critical area of the engine is the rod bearings and setting rod bearing clearance. In order to ensure the correct rod bearing clearance, along with the correct bearing crush, we go through and measure and set every rod bearing clearance, on every engine we do. 

Block Deburr & Radiusing

Each engine is carefully hand deburred to ensure that stress risers and sharp edges are removed from the blocks. This is an important step, ensuring that the block will hold up at higher power levels. Some of the deburr work is to remove sharp edges to aid in assembly work, while other deburring is done to remove sharp edges that cause stress risers and potential wek points. 


Powerstorm pistons are designed exclusively by Livernois and only available through Livernois Motorsports. Each design is developed to match the specific needs and requirements of the engine and application. Where as most companies just use "off the shelf" pistons, Livernois know's that in order to achieve maximum performance and reliability that you can't just settle for off the shelf parts. Taking from over a decade of building winning race engines, alongside the extensive time spent working with OEMs on development, Livernois designs each piston to be a perfect fit for the application. Features like increased ringland thickness, increased skirt thickness, added struts and bracing, revised ringland stack, custom skirt profile, and many other things, all go into making a Powerstorm piston the best piston on the market. 


Powerstorm connecting rods and designs have become the industry standard design for many different engine families. From our H-beam design, to our higher end I-beam offerings, these rods are designed to handle the increased horsepower and torque of a modified performance engine. With standard features like ARP2000 upgraded bolts and precision tolerances of just .0001, these rods are the best available. 


Each crankshaft is precision balanced, and treated to a variety of treatments in order to ensure the best possible performance and durability. 


  • 5.4L Iron Block 
  • Forged Crankshaft
  • Powerstorm Forged Pistons
  • Stainless Steel Ringset
  • Powerstorm 4340 Forged H-Beam Connecting Rod
  • Tri-Metal Performance Main Bearings
  • Tri-Metal Performance Rod Bearings
  • Main Bolt Kit

Machine & Assembly Work

  • Honed Cylinders
  • Main Clearances Set
  • Block Deburr and Radiusing 
  • Balance Rotating Assembly
  • Rod Clearances Set
  • Rings Hand Gapped and Filed
  • Shortblock Assembly 

  • 2002-2003 Ford F-150 Harley-Davidson Edition 5.4 Liter Supercharged
  • 1999-2003 Ford F-150 Lightning 5.4 Liter Supercharged
  • 2004 Ford F-150 Heritage SVT Lightning 5.4 Liter Supercharged
  • 2005-2006 Ford GT Base 5.4 Liter Supercharged
  • 2007-2012 Ford Mustang Shelby GT500 5.4 Liter Supercharged
  • 2008-2009 Ford Mustang Shelby GT500KR 5.4 Liter Supercharged
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