Cams for 318's

Printout Duration .006 265 lift .471

Jones 256-454 (shorter real seat duration for earlier intake close for low comp and more at .200)
Lunati @.006
253 208 454 all the heads flow, no special machining)
256 213 454

Howard 255 208 .479 @.008 so more real duration than lunati above
shorter duration than printout, same lift, should be more @200

Lunati 262 220 475 about the same duration as printout cam

Howard 265 218 502 more duration than printout cam but looks the same (difference in lift at measurement)