stay in the high 260's to low 270's duration once you start going into the high 280's and up is when it starts getting hard to street the higher duration you go. i usualy ran cams in 268 272 274 & the highest 278 durations for the street. plus you need to run stall converters with some cams and you want to match up the rpm's like let say for example your cam is 2500-5500rpm well you would want a 2500rpm stall converter. also pay attention to the lobe seperations for example 106 degrees of lobe seperation will be racier and snappier than a cam with 114 degrees of lobe seperation but the 114 would be better for higher rpms rather than the 106 but the 106 will reach its power band at a lower rpm than the 114. but me for example just to give you an idea i set up my engines to run anywhere from 1500 - 6000 rpm and run cams in the 270's with 108-114 lobe seperation and around 440 - 470 lift for a SBC.Quote:
Originally Posted by dhemi1