Up for sale is a split duration set of GSC S2/S3 cams other wise 274/280. Used on my personal track car until the need for bigger cams arose. This combination exhibited great street manners and top end flow for those looking for something on the streetable side of rowdy. Used but in good condition, they were evaluated by the local machine shop to only have superficial wear (the dark grey coating) and are within spec, no abnormal lobe wear and no damage to the journals.