The GSC S1 cams are designed for those with the stock turbo up to the
GT30/50Trim. These cams will not sacrifice any bottom end loss over stock cams;
nothing but gains and will promote faster spooling of the upgraded turbos.
Gains of 30-55whp (depending on Turbo) have been seen by
simply bolting the S1 cams in. Designed for a rev range of 3000-8000rpms, these
cams work well on the stock valve springs. 300-450whp camshaft. Idle is slightly
ruffer than stock.
S1 Specs (part # gsc-6008S1)
Intake 268 Duration 10.50mm peak lift, 107 degree Centerline
Exhaust 266 Duration 10.50mm Peak Lift, 113 degree Centerline.
The S2 cams are designed for those with a GT35R-GT4067 Turbo. No low end power
is lost vs the stock cams when used with the larger turbo. The S2 cams will show
gains of 50-70whp over the stock cams and in some cases more in the
higher RPMS. Great for 2.0L engines revving to 9000rpms or for Stroker motors
revving to 8000rpms. The S2 Cams require upgraded valve springs (check out GSC’s
Chro-Molly Retainers and single valve spring kit for a perfect upgrade to your
valve train). Designed for a rev range of 4000-9000 RPMS(2.0L or 3000-8000
2.2L+), 500-700whp applications. Not suggested for smaller stock appearing turbo
setups. S2 cams can run on Factory ECU with custom flashing.
S2 Specs (part # gsc-6008S2)
Intake 274 Duration 11.2mm peak lift, 107 degree Centerline
Exhaust 272 Duration 11mm Peak Lift, 113 degree Centerline
Fits: Mitsubishi Lancer Evolution 8