High torque 360 LA build camshaft recommendations

It's hard to increase low rpm power say idle-3000 rpm, best way is displacement cause rpm is fix,
Please explain this. What is “RPM is fixed?”

good exhaust & freeing restriction on intake side and right cam can help but gains will be minimal, don't forget we're looking for part throttle gains.
Fix d it with the and symbol (&)
But, YEP!

As for cam recommendation I'd go custom, if not tightest lsa with the mildest duration and highest lift
Now you sound like me.