GSC Power-Division S2 camshafts for the EJ255 and EJ257 Subaru WRX and STi. These cams are built to suite the high horsepower Subys. 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. Dual valve springs are recommended, but an upgraded single spring kit will do the job under 8000 rpm. **Due to the lob size, some head castings may need to be filled down for clearance.
SPEC
Intake 272 / 226 @ .050" / Peak Lift 10.5MM / Centerline AVCS
Exhaust 272 / 232 @ .050" / Peak Lift 10.2mm / Centerline 113.
•Requires Upgraded Valve Springs and Retainers
Applications:
EJ255 - 2.5 litre DOHC AVCS turbocharged
North America:
Impreza: 2006 - present
Forester: 2004 - present
Legacy/Outback: 2005 - present
Baja: 2004 - 2006
Rest of the world:
Legacy/Outback: 2005 - present
Impreza: 2006 - present
European Imprezas and Legacies destined for Australia and South Africa.
EJ257 - 2.5 litre DOHC AVCS turbocharged
North America:
Impreza WRX STi 2004-2007
