your thoughts on a street cam

I run a 230/236 comp xe274h in my 340. 10:1, iron heads. Some port work. 2.02 valves. Has great low end torque. Right off idle it pulls hard to 6000. I love that cam. I wouldn't go bigger though. I idle at 900 for power brakes and steering. But it's not as simple as picking a duration. Like other's have mentioned there is more too it. One thing to watch when picking a cam is the change from static to dynamic compression ratio. For top performance. You want 7.5 dynamic on iron heads. That generally is the limit of 91 pump gas. Other considerations aside of course.