I do not see any information on that card!
If it is the #60302 it has a 112 lobe seperation and installs on a 108 intake centerline so it would be 4-degrees advanced. The intake valve opens (0.050" lobe lift) 2-degrees before top dead center, and closes 38-degrees after BDC, again the duration number is at 0.050" lobe lift. Take the 2-degrees plus the 38-degrees plus 180 and you get the 220 advertised duration at 0.050"
advertised duration numbers will vary on hydraulic flat tappets between .000-.008. crane was .0042, comp cams .006, engle .008. the trw, speed-pro, elgin, etc include the ramps in their numbers so they are probably .000 or very close. there is a similar situation with mech flat tappets.Isn't "Advertised" duration usualy calculated from .060" lift? And NON-advertised duration or "duration at .050", calculated from .050" lift?
advertised duration numbers will vary on hydraulic flat tappets between .000-.008. crane was .0042, comp cams .006, engle .008. the trw, speed-pro, elgin, etc include the ramps in their numbers so they are probably .000 or very close. there is a similar situation with mech flat tappets.
Isn't "Advertised" duration usualy calculated from .060" lift? And NON-advertised duration or "duration at .050", calculated from .050" lift?