GSC Power-Division Billet S2 camshafts for the USDM STi and WRX with Intake only AVCS. 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. Upgraded valve springs are required; Beehive valve springs are recommended but not required.
*Check Pictures for cam placement. Long nose= Left Side, short nose - Right Side
**Due to the lobe size, head castings will need to be filled down slightly for clearance.
Intake 272 / 230 @ .040" / Peak Lift 10.8mm / Centerline AVCS
Exhaust 272 / 232 @ .040" / Peak Lift 10.4mm / Centerline 115
*Proper break in and running high zinc oil is a must on flat tappet engines. Must be installed by an experienced technician*
*Requires upgraded valve springs*
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
Rest of the world:
Asian, European Market Impreza WRX STi 05-07
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