The difference in the advertised lift and the "approximate" lift you are seeing is because the advertised lift is when using 1.5 rockers. Since you stated that you are using 1.6 rockers the lift will be increased.Jackson72ss said:Ok guys, I'm sitting at school now so I dont have my cam card or anything handy but I'll do the best I can here. I'm running a Comp Solid Flat 4/7 Firing Swap Cam in my 377. Its supposed to be .520/.540 lift and 244/252 duration at .050. I am also using comp gold 1.6 rockers. When checking P/V clearance we noticed that the exhaust lift was approx .545 and intake lift was .576. Duration was 252 on the intake side, but 258 on exhaust. What happened with this thing? Did Comp screw up my grind???
Whenever swapping out the cam (especially when swapping out the rockers with a greater ratio); you need to check the valve to piston clearances before ever running the engine.
That 850cfm Demon carb is way too big for your motor for street use.