GSC Power-Division S2 Subaru WRX STI EJ257

GSC Power-Division S3 Subaru WRX STI EJ257

GSC Power-Division S3 camshafts for the USDM 04-07 STi. These cams are built to suite the highest horsepower drag Subys. With a power range of 750-1000WHP and a rev range of 4500-9500rpms, you need some certain mods to utilize the true potential of the S3s. Built motor, with a built/ported head (clearanced for lift), and a standalone engine management system. Dual valve springs are recommended.

**Due to the lob size, head castings may need to be filled down slightly for clearance.

S3 Specs-

Intake 282 / 240 @ .050" / Peak Lift 11.3MM / Centerline AVCS
Exhaust 282 / 240 @ .050" / Peak Lift 11.3mm / Centerline 113


*Requires upgraded valve springs*