Prop suggestions for new 271 power
 

Powerboat gurus -

1999 Formula 271 Fastech

Can you guys take an educated guess at what I will need for a prop?

Old power:
415HP 502 MPI....bone stock
26p B1 4-blade, 1.65 ratio
60mph @ 4900 rpm
1700' elev

New power:
Whipplecharged 502MPI, IMCO exhaust, 650HP(?)
rev limiter at approx. 5300(guessing)


Also, how will lab finishing effect my pitch selection?

try them out/EASY ON LABBING
 

try several different props such as a Mirage plus 27 and 29 pitch ??

four blade selection try the 26 and a 28 Bravo-one these would be good starting props and get some numbers and go from there,maybe there are some members that have some props laying around they might let you try.:D

wished we had some higher pitched stuff for you to try, but we do not at this time,


good luck,>>>>>>>>>>>>>

I would bet a 27 Mirage plus converted to the ACCLERATOR would work wonders.it's 100%guaranteed.
with this much hp, I personally would not go with a hydromotive as they fatigue under this much hp and will break. what ever prop you go with it can not be very THIN or it will BREAK.:eek: ;)