Off the top of my head, all three of those cams have a lift value greater than 12mm. I see where you're getting a little confused. The duration value advertised on Buddy Club sites and quoted elsewhere is the duration spec at full lift (INT 296, EX 290). Other cam manufacturers such as Skunk2, TODA, and JUN advertise their cam duration spec at 1mm lift. Therefore, the BC Spec III+ cam has a duration spec of INT 250 @ 1mm, EX 245 @ 1mm
Hope this clears things up for you
i was just looking @ the BC site and weather i could be reading it wrong or what? but it states on the intake cam at 1mm open @ 25 deg BTDC/ 1mm open @ 45 deg ABDC. surely this means the valve is open 296 deg between these two points? right?
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