If i run 1.6 rocker with this cam that i have got what would be the lift on my cam . its Advertised @ 1.5's rockers
Advertised Duration (Int/Exh): 284/292
Duration @ .050 (Int/Exh): 242/252
Gross Valve Lift (Int/Exh): .533/.552
LSA/ICL: 110/106
Theoretically or realistically? Theoretically it should be .568/.589 but due to the crappy lifter to pushrod to rocker angle (their not in a straight line) of a standard production SB Mopar you always loose some lift. Realistically it's going to be in the neighborhood of .025~.050" less lift than it should be depending on how good the geometry is. Great geometry and you'll only loose about .025". Lousy geometry could cost quite a bit of lift. I've seen it as bad as .050" loss due to crappy made rockers.
BTW: figuring the valve lift with 1.5 rockers vs. 1.6 rockers is simple. If the cam is rated with a 1.5 rockers divide the lift by 1.5 and that'll give you the cam lobe lift. Then multiply it by 1.6 to give you the theoretical lift using 1.6 rockers. Most cam cards have the lobe lift spec. so if you have the card just multiply the cam lobe by whatever rocker ratio you wish.
