Reply to "DeTom on retarded cams, adding lightness and finding the right wrench"

DeTom I'm doing exactly what you are doing..but going a bit farther. I have a Dec 72 car, #4382. I'm swapping the open chamber heads to 71 closed chamber with new valves(lighter,one piece, better flow), roller rockers(less friction), new behive springs(less mass in the retainer) and am cleaning up the intake and exhaust bowls, reworking the short side radius in the exhaust chamber(per recommendations of Dan Jones). Also new cam and high quality double roller timing chain set without the 4 degrees of retard on the new cam. I'm changing intake manifold and carb...just haven't chosen them yet. It will be very interesting to see how the motor perform with the changes.