Quote:
Originally Posted by Wizard
And anything over 264 grind you will need spring/retainer upgrade. Not from the revs or rpms...but the lift of the cams will cause stock springs to bind.
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HKS 264s and 272s have the exact same lift. 9.8mm exh 10.2mm int
Im not so sure stiffer springs are required for HKS 280s either. At least i cant find any literature with them specifically saying YOU NEED SPRINGS TO RUN THIS CAM.