Perhaps you might consider reading it?
CCS-1 SAE Specs@ (0.06/Rocker Arm Ratio)
INT 21° BTC 71° ABC 286° [21 +71 + 180 = 272, not bad, only 14° difference]
EXH 63° BBC 26° ATC 344° [63 + 26 + 180 = 269, 75° difference]

75° of "clearance ramps?"