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Cosworth Camshafts S2 Grind ( Part Number:COS1 KK3766)

Cosworth Camshafts S2 Grind - Subaru STI 2004-2007

MODEL # COS1 KK3766
Manufacturer Part # KK3766

$1,250.00

24
hours
In stock! Ships same day
Qualifies for free shipping!


Description

Cosworth has been engineering camshafts for nearly 50 years. That coupled with years of innovative multi valve cylinder head design ensures their camshaft designs are the most efficient in providing maximum usable power across the widest power band. Each cam is ground from a new chill cast billet and finished using the same procedures we use in their extreme level race engines. Cosworth camshafts are the perfect complement to the CNC Ported Big Valve Cylinder heads. Cosworth Subaru EJ25 cams are profiled to increase boost response thereby increasing engine torque and power and are fully compatible with the Subaru STI AVCS.

Specs:
Valve Clearance: Intake .008" Exhaust .010"
Peak Cam Lift: Intake 10.9mm Exhaust 10.28mm
Rocker Ratio 1
Peak Valve Lift: Intake 10.71mm Exhaust 10.03mm
Centerline: Intake 107 deg Exhaust 113 deg
Open: Intake 29.5 BTDC Exhaust 70.9 BBDC
Close: Intake 69.3 ABDC Exhaust 23.4 ATDC
Duration: Intake 278 deg Exhaust 274 deg

Notice: Performance camshafts may require improved valve train for proper operation.
Always check for spring coil bind. Cam followers should be in good condition or replaced
with new parts. Follow proper break-in procedure for maximum cam life.
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Specifications


Brand: Cosworth
Cam Exhaust Duration: 274
Cam Exhaust Lift: 10.0mm
Cam Intake Duration: 278
Cam Intake Lift: 10.7mm
Location: Intake and Exhaust
Machining Required: No
QTY: 4
Springs Required: Recommended

Mfgr. Warranty: No Warranty
Condition: New Product
Return Policy:

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RallySportDirect.com Reviews:

  • Q: Supporting Mods  bladesti 6 years ago

    Answer

    Other than a tune what other mods will i need to install these?


    • A: Upgraded springs and retainers are recommended but not required


      Kirill C. 6 years ago
  • Q: duration  Attia199 6 years ago

    Answer

    What is the duration spec measured from .050 for these cams.


    • A: Cosworth does not currently list that information.


      Kirill C. 6 years ago