Kelford's Stage 5 camshaft set features 292 degree intake cams and 294 degree exhaust cams with 11.20mm / 11.25mm lift. The cams require shimless buckets, cylinder head clearancing for fitment and are best suited for motors with larger intake manifolds, ported heads and big turbos.

The Subaru STI EJ257B engine features dual AVCS (Active Valve Control System). This feature enables the builder to extract massive power while retaining great low end driveability. The Kelford range of camshafts feature a very new camshaft design technology termed 'ICE'. This design technique results in a efficiency gain for these engines. No other aftermarket camshaft company offers this approach for the EJ25 engine platform. 

Specifications:

 

• Cam Lift: Intake = 11.20mm , Exhaust 11.25mm
• Net Valve Lift: Intake = 11.00mm , Exhaust = 11.00mm
• Advertised Duration @ .25mm: Intake = 292 , Exhaust = 294
• Duration @ 1.0mm Valve Lift: Intake = 250 , Exhaust = 252
• Timing @ 1.0mm Valve Lift: IVO = 13 ATDC , EVO = 64 BBDC , IVC = 57 ABDC , EVC = 8 BTDC
• Suggested Centerline: Intake = 112, Exhaust = 118
• Valve Lift @ TDC: Intake = 2.42mm , Exhaust 1.85mm

 

 

Notes:

• Kelford Cams recommend valve spring upgrade KVS1847-BT
• Requires cylinder head modification to fit
• Must have shimless buckets