Crawford Subaru Long Block EJ257 (2004–2021) – Up to 770 HP

For over two decades, Crawford Performance has been the trusted name in Subaru performance engines. Our Subaru EJ257 Long Blocks are hand-assembled with forged internals, blueprint machining, and our exclusive CrawfordSPEC components to deliver reliable power up to 770 horsepower — proven on the street, at the track, and in Subaru of America motorsports programs.

Unlike overbuilt engines based on myths, every Crawford long block is engineered within OEM specifications for precision, dependability, and longevity. Each engine starts as a brand-new OEM short block (no core required) and is upgraded with CrawfordSPEC forged pistons, rods, and bearings designed exclusively for Subaru’s turbocharged EJ platform.

Built for Power & Reliability

All Crawford Performance components are track-tested and race-proven. Over decades, we’ve pushed EJ20, EJ25, and FA20 engines to their breaking points to understand what fails and why. That research shaped the CrawfordSPEC piston and rod designs — engineered to give you:

• More manifold vacuum at idle for a tighter, healthier, and more efficient engine.

• Lower crankcase pressure for improved reliability.

• More power at the same boost level with the same supporting mods.

Choose Your Power Rating

Crawford Street Spec (CSS 540)

• Rated up to 450 whp (540 bhp)

• New OEM short block – no core required

• CrawfordSPEC CSS JE Forged Pistons (SCCA-approved and stamped)

• Upgraded race-proven bearings

• Crawford Essential Subaru Cylinder Head Service Inspection & Prep

Crawford Club Racer (CCR 660)

• Rated up to 550 whp (660 bhp)

• New OEM short block – no core required

• CrawfordSPEC CCR JE Forged Pistons

• CrawfordSPEC X-Beam Pauter Billet Rods

• Upgraded race-proven bearings

• Crawford Essential Subaru Cylinder Head Service Inspection & Prep

Crawford Racer Spec (CRS 720+)

• Rated up to 600+ whp (720+ bhp)

• New OEM short block – no core required

• CrawfordSPEC CRS FSR Billet Forged Pistons (Forged Side Relief)

• CrawfordSPEC Forged Rods

• Upgraded race-proven bearings

• Crawford Essential Subaru Cylinder Head Service Inspection & Prep
  

  
  Pricing includes reusing and reconditioning your previous heads

About CrawfordSPEC Pistons

Developed exclusively with JE Pistons, every CrawfordSPEC piston is designed with:

• Exclusive dish design for stronger combustion and efficiency.

• OEM bore size of 99.5mm (no oversized pistons needed).

• Increased vacuum, lower crankcase pressure, and more power at the same boost.

📖 Learn more in our blog about why oversized pistons aren’t the best choice for rebuilding your EJ motor.

About the FSR Piston Upgrade

Our Forged Side Relief (FSR) Billet Piston is engineered for high horsepower road and drag race engines. Features include:

• 100% CNC-machined from 2618-T6 aluminum bar stock.

• Internal and external bracing for rigidity and weight reduction.

• Up to 32 grams lighter than traditional forgings.

• High-quality 9310 steel wrist pins.

• Reduced skirt width for less friction and power loss.

About CrawfordSPEC Rods

Developed with Pauter Rods, CrawfordSPEC rods feature:

• Longer than stock length for improved rod ratio and smoother power delivery.

• Billet 4340 chrome-moly steel, the strongest in the industry.

• Engineered exclusively for Subaru EJ applications by Crawford Performance.

Order Your Crawford EJ257 Long Block

When you choose a Crawford Subaru Long Block, you’re getting:

• A brand-new engine build — no core required.

• Race-proven forged internals engineered for your target horsepower.

• Motorsport-grade craftsmanship trusted by Subaru of America and Ken Block.

• A precision-assembled long block capable of 500–770 horsepower with proper tuning and maintenance.

📞 Please call us to confirm inventory and current lead times. Crawford Long Blocks are built to order.