street/strip and power glide?what car?
I converted my 67 Camaro back in the day. It had a solid roller cam,5.57 gears. It could not be driven on the highway at all.It had a top speed of 115 mph.
I also used a 5,000 rpm stall.
before that it had 5.13 gears and a 4 speed.
that was in the late 70s.
With todays technology you can go faster and have a smother idle. I would use an O/drive auto and maybe as high as 4.30 gears depending on engine and car weight