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ROUSH® 2005-10 Mustang GT Short Block Assembly - Part # 403996

<b>ROUSH® 2005-10 Mustang GT Short Block Assembly - Part # 403996

Prepare your 2005-2010 Mustang for liftoff with the ROUSH® 4.6L Mustang Shortblock Kit. This system adds serious robustness to your engine's bottom end with a complete forged aluminum short block assembly. This system works great for supercharged applications, allowing your engine to withstand much greater power than the stock engine. That's why ROUSH® used this system on its high-horsepower production P-51 Mustang.

With this system, you get the best of both worlds: the ability to withstand high levels of horsepower without the cumbersome weight of a larger cast iron block. This Mustang shortblock kit includes 8:6 compression forged pistons, forged H-beam connecting rods, a forged steel crankshaft, an 8 bolt aluminum flywheel, and an upgraded severe duty harmonic balancer.

Since being established in 1976 as Jack Roush Performance Engineering, ROUSH has become the winningest name in racing, with numerous championships in professional drag racing, road racing, and NASCAR. The ROUSH company is also recognized internationally as a premier provider of automotive product development and systems integration solutions, with more than 2,000 employees in facilities across the globe. The company's success remains deeply rooted in the core values that are unique to ROUSH: reliance upon the talent of the individual, a disciplined work ethic, scrupulous attention to detail, and an acutely intense desire to be the best. As a result, every ROUSH product shares in this rich tradition of racing performance and the highest level of OEM quality and design.


  • Complete Forged Short Block Assembly
  • Add serious robustness to your engine's bottom end
  • Works with 2005-2010 4.6L Mustangs
  • Great for supercharged applications
  • 8:6 compression forged pistons
  • Forged H-beam connecting rods
  • Forged steel crankshaft
  • 8 bolt aluminum flywheel
  • Upgraded severe duty harmonic balancer
  • These kits contain all the necessary brackets, hardware and instructions for complete installation.
  • Customer Re-uses cylinder heads, timing chains, oil pump, engine sheet metal
  • Part #403996
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