I'm posting for a friend who has a Cole TR4 ski hull, 5/8 runner bottom. 568 ci. BBC @ 850 HP on dyno. He has a 11 X 16 Menkins 2 blade with 29 gears in a 10 degree box. Previous owner with 500 HP, 18 gears, same prop ran 80 by the GPS @ 3000 foot altitude.
What do you think would be the magic bolt on prop for this combination of play boat looking for 100 mph??
Thank You, Spudz