Looking at a few cam options on Bullets website (HC275/333; HC276/334; HC280/335). Anyone know if they publish estimated rpm ranges somewhere on their cams? It looks like these cams are single vs dual profile cams as I didn't see separate lift/dur numbers for Int & Exh?
I read somewhere or maybe saw a video where someone was referencing chamber pumping volume to head flow volume numbers to determine if a dual profile cam was recommended but it's been a while and don't remember exactly where the information originated.
Also, the ProMaxx flow charts indicates that the 171 mopar heads get very close to peak flow at 0.500" lift (251 @ 0.500" vs 254 @0.600" lift). Is there any reason to go much above 0.500" with these heads, assuming valve to piston clearances are in check at 0.500".
