Dyno'ed My 360..it's a pig..what next?

If you are still considering fixing or changing heads, ask around and find out what heads produce the most torque from 2500 to 4500 rpm for a motor like yours. THAT is where you want to build power (torque) for the street. If you can build max torque in that zone, you can move the torque peak up some to get more hp with a bit bigger cam, if needed. I am not up on smallblock heads, but have heard 308 castings work well?