I have an '06 Regal 1900 with a Volvo 4.3L GXi. Current prop is an aluminum 14.5 X 19. At WOT, 5100 rpm (yikes) it hits around 48 mph GPS. I've tried a 19 degree Enertia SS that has yielded same RPM's, but 52MPH.
Yesterday, I tried my friend's Stiletto Bay Pro II 18 degree. WOW, the ride...
