It makes me remember that I didn't have that much trouble with the 2 427ci engines I built 46, and 48 years ago, that pulled smooth, and hard to 6500rpm with just points. I could lift the left front wheel on my 68 Chevelle in second gear with G60-15 tires on the street. I had both of those engines machined at
Speed-O-Motive in 73, and 75 while I was in the Navy in Long Beach. I just had a POS timing light back then...