it all about what cam you got. one of my friends shifts at 8400 with his 401 with a 4800 stall. i'll be shifting my car at 62-6300r's it gets valve float at 6500. i've got a small dur cam 224@.050 get a nice solid cam and rev as high as you want. with stock rods and crank my motor is good to 7500-7800r's. with nitrided crank and shot pinged rods it good to 8500r's.

i'd say you know nothing about v8's if you say they can only make power to 5000r's

when you pick a cam for a v8 will get power ranges. say- 1200-5000, 2000-5500. 2500-6000, 3000-6500 3500-7000 ..ect


i picked 2600-6100.