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.
This engine consists of the following parts:
New OEM Subaru EJ257 case halves
Rated to 775 BHP as configured
Assembled with 2mm Longer rods for a better rod to stroke ratio.
