This Block Is Our Closed Deck EJ257 With Forged Internals. 

This closed deck block design has been proven to withstand extreme boost levels resulting in high cylinder pressures without the worry of cracking a sleeve. The billet material that reinforces the combustion area has been further optimized with our V3 closed deck block in the known problem areas making it a far superior product to any sleeved block. With a closed deck block the stock sleeves are still in place eliminating all risk of dropping sleeves and pushing coolant that you have with a sleeved block.

• Seasoned EJ257 case halves
• V3 Closed Deck Process
• Forged Pistons (Default is CP but you can choose any shelf JE, Manley, or CP piston)
• Outfront Motorsports H Beam Rods
• King Performance Bearings
• New OEM Subaru Heat Treated Crankshaft
• DEFAULT: 8.2:1 EJ257 Pistons UNLESS you select a different Block Configuration in the pulldown.
  • 8.4:1 EJ255 Pistons (D25 Heads 06+ WRX)
  • 9:1 EJ257 Pistons
  • 10:1 EJ257 Pistons

No Core required!!

If you have higher power goals or are looking for something different from this block, feel free to contact us to get the correct built block for your application. All of our builds can be completely customized. All of our assembly is done in house in our clean room to ensure excellent quality control. Our Blocks are all bored/honed using torque plates. All tolerances are double checked and all parts are thoroughly cleaned and inspected prior to assembly.