When Steve Tanzi from Erson cams sat down with me he worked up 3 cam grinds based on my roadster build. The rpm ranges were #1. 1750-4750, #2. 2200-5200, #3. 2500-5500. I chose #3 and now think #1 would have been more realistic for what the car will be doing the most. The rear end and transmission are from y son's '54 Studebaker wagon. Trans is a BW T86 three speed OD and the rear gear are from a Dana 44 4.27-1. Tires will be close to 30". We ran that setup in the wagon on some round trips to Texas. In OD 65-70 was around 23000 rpm. On a stretch we did from Vegas to Kingman without OD was 55 mph at around 35000 and not pleasant. This was behind a supercharged 289 Stude V8.
I'm thinking the 4.27 will get the 4 cylinder rolling and help on the many mountains here. 70-75 Is plenty on the highway and I will avoid freeways when ever I can. So almost all driving will be in the cam #1 range. I have other rear gears 3.73, 3.55, 3.08 to play with but they probably won't help with this cam. At the rat the build is progressing it won't matter anyway.
