camshaft for 225

As far as RPM goes,I'll tell you what Jack Clifford told me years ago at a SEMA show.The 225 Chrysler engine should be built as a "Torque" engine.His theory was the head will not flow in hi rpms enough to spin it any faster than 6,000 rpm.That was 20 years ago.
After his death, Clifford Industries went down hill and has a bad reputation with the new owners.