The pulley'* are the exact same diameter so for any given engine rpm, both designs will spin the same speed.
I think what is meant is that the Gen V will produce the same flow/pressure as the Gen 3 but at 700 rpm lower speed.
That'* why I changed from the 3.2" to the 3.4" pulley.
I will prolly only be able to pulley down to the 3.2 for racing.....unless I arm the water/methanol injection system, then it should be possible to run the 3.1 pulley. The 3.0 & 2.9 will have to wait till further mods.......if I do any.