Boat is a 1981 SeaRay SRV 207 (20 ft) with MCM 260 Horsepower Chevy 5.7 V8, Alpha drive. I previously ran an aluminum Michigan Wheel Vortex 3 blade 14.5 x 19, would top out at 4600 rpm, dont know speed.
Looking to go to 4 blade for more holeshot, not concerned with top speed but want it...