Maybe it's the way I see it or what level these engines are being built for but cam size seem to be on the lesser variable for a street performance v8 engines, most performance cams people seem to gravitate to is 215-255 give or take say average around 235, cid, 273 to 500+, heads 175 - 325+ cfm. Peak hp 4500 to 6500+ rpm, To me number one factor where that rpm peak will be for a given hp is displacement.