GSC Power-Division S2 camshafts for the 08+ Subaru STI EJ257 with Dual AVCS. These cams are built to suite the higher horsepower Subies. With a power range of 500WHP and up, you need some certain mods to utilize the true potential of the S2s. Built motor, with a built/ported head, and a good engine management system. Upgraded valve springs are required; Beehive valve springs are recommended but not required.
Due to the lobe size, head castings will need to be filled down slightly for clearance.
- Intake 272 / 230 @ .040″ / Peak Lift 10.7MM / Centerline AVCS
- Exhaust 272 / 228 @ .040″ / Peak Lift 10.4MM / Centerline AVCS
- Upgraded valve springs are required; Beehive valve springs are recommended but not required.