S1 Billet Camshafts

• 2003-2005 Mitsubishi | EVO 8

The GSC Power Division S1 Billet Camshafts are billet S1 camshafts for the Mitsubishi Evolution 4-8, listed for the 2003-2005 Mitsubishi Lancer Evolution VIII, designed for those with the stock turbo up to the GT30/50Trim. The manufacturer states these cams will not sacrifice any bottom end loss over stock cams, will promote faster spooling of upgraded turbos, and gains of 30-55whp, depending on the turbo, have been seen by simply bolting the S1 cams in.

• Billet S1 camshaft set for the Evolution VIII
• Designed for a rev range of 3000-8000 RPM, 300-450whp camshaft
• Intake: 268 advertised duration, 216 duration at 1mm, 11.00mm peak lift, 107 centerline
• Exhaust: 268 advertised duration, 220 duration at 1mm, 10.50mm peak lift, 113 centerline
• Work well on the stock valve springs
• Idle is slightly rougher than stock
• Made 100% in the USA
• If using aftermarket cam gears (especially AEM), check the bolt length; a 40mm underhead length bolt may be necessary
• Part Number: 7008S1

Q&A

Does this fit my car?
This camshaft set is listed for the 2003-2005 Mitsubishi Lancer Evolution VIII; verify fitment before purchase.

What gains can be expected?
The manufacturer states gains of 30-55whp, depending on the turbo, have been seen by simply bolting the S1 cams in.

Are upgraded valve springs required?
The manufacturer states these cams work well on the stock valve springs.

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