Comp cams xe268h for 318

Back in the 50's we could do a stoveblot chevy hone and re ring and grind the valves in half a day
we used non moly rings
they would run for a surprisingly long time
not much compression or rpm
had a fleet of late 40's early 50's chevy trucks- some with splash lube to the mains
I still see one around every once in awhile
earliest I still have is 69 and that's a different motor