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Old 08-08-2012, 08:13 PM
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258 and 264 are the advertised intake and exhaust duration. 230/236 is duration @ 050 valve lift.
.561/.574 is the gross valve lift,not counting what you lose due to valve lash.108 is lobe ceparation angle and 104 is the intake love center line,,,.018 is the feeler guage size for valve lash,,1800 to 5600 is the RPM range of the cam
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