• Ken Block Spec EJ257 Long Block Assembly – Crawford Performance - Crawford Performance
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Crawford Performance

Ken Block Spec EJ257 Long Block Assembly – Crawford Performance

Ken Block Spec EJ257 Long Block Assembly – Crawford Performance

$12,000.00 USD
$12,000.00 USD
Oferta Agotado
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Ken Block Spec EJ257 Long Block Assembly – Crawford Performance 

 

Built for legends. The Ken Block Spec EJ257 Long Block Assembly from Crawford Performance is engineered with billet pistons, forged rods, KB-Spec cylinder heads, and balanced rotating assembly — delivering over 700 wheel horsepower with race-proven reliability.

Ken Block Legacy, Crawford Performance Engineering

Crawford Performance built the Subaru engines that powered Ken Block’s early Gymkhana icons. Now, the Ken Block Spec EJ257 Long Block Assembly brings that same race-bred engineering to your WRX STI build. Precision-crafted, balanced, and battle-tested — this is the ultimate EJ motor for those who refuse to settle.

Key Features & Upgrades

🔥 Billet Piston Forging Upgrade

  • CrawfordSPEC billet pistons, CNC-machined from 2618-T6 forged aluminum

  • Internal & external bracing for maximum strength under boost

  • Designed for lightweight response and extreme durability

🔥 CrawfordSPEC Forged Rods

  • Billet 4340 chrome-moly rods

  • Optimized length for smoother power delivery

  • Engineered for extreme cylinder pressure & high-RPM abuse

🔥 Upgraded Performance Bearings

  • Increased durability for long-term high-horsepower use

🔥 KB-Spec Cylinder Heads

  • Precision port & polish work for maximum airflow

  • KB-Spec multi-angle performance valve job

  • Increased efficiency, throttle response, and RPM stability

🔥 KB-Spec Assembly Processes

  • File-fit ring gaps for optimized piston sealing

  • Balanced rotating assembly and clutch for flawless operation under load

Performance Rating

  • Rated to over 700 Wheel Horsepower

  • Built to dominate street, track, rally, and time attack

Why Choose Crawford Performance?

Crawford Performance has been building Subaru championship engines for decades. Trusted by Ken Block, Travis Pastrana, and professional race teams worldwide, Crawford delivers more than just horsepower — we deliver race-winning reliability.

This is not just a long block. It’s a piece of Subaru motorsport history, modernized for today’s enthusiasts.

Perfect For

  • WRX STI owners building 600–700+ WHP street monsters

  • Time Attack & track-day Subarus

  • Rally & Gymkhana-inspired builds

  • Anyone who wants Ken Block’s spirit under the hood

All Crawford Performance Built Short Blocks feature:

  • Brand New / No Core Fee


  • Built for Reliability instead of being Overbuilt on Myths


  • Fully Blueprinted and Assembled within OEM Specs

  • *Please call us to confirm Built Short Block Inventory.

All components engineered and manufactured by Crawford Performance have been tested for ultimate performance and maximum dependability on and off the race track. For over three decades we have tested all combinations of upgrades for the turbo-charged EJ20, EJ25, and more recently the new FA Subaru engines.

We have pushed these engines to their breaking points to determine which components fail at what level. From that research we have come up with forged internals to keep your engine strong enough to withstand your desired power level. 


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