Welcome to the site, Jack. Glen makes a good point regarding the technology today versus what was available at an earlier time.
Like you, my memories of my first y-block 'build' are fond ones. Likely my memories are a bit skewed by time, the excitement of making my first engine modifications, and the way things can become colored with time.
I was well pleased with the TRW TP-105 cam I selected in the middle '60s. One thing that stuck with me from that experience was how well that cam performed in my .060 over 312 and how differently the same cam worked in a friend's slightly overbored 272.
In terms of street-ability, low speed throttle response, and overall drive-ability the same cam was like night and day for the two applications. The valve lift, duration, and overlap worked great with the larger displacement engine and seemed to be too much for the smaller displacement engine.
That said, displacement is but one factor to consider in camshaft selection and engine modification. Carburetor selection, intake and exhaust systems, porting, compression ratio, rockerarm ratio, and tuning all make important contribution to achieving a good working combination that will provide the engine performance you desire.
a.k.a. Charlie Brown
near Syracuse, New York