Going from a 3 blade prop to a 4 blade and need advise on what will work

[Replacement]

I am looking to replace my 3 blade prop to a 4 blade to give me a better hole shot. The current specs on 3 blade are 14 25 x 21. Is there an easy way to match that up with a 4 blade based on that info?

1997 Bluewater Shadow
4.3 Mercruiser 200hp I/O
17.5'
2500 lbs
elevation around 600'
always have 4 + people in boat with minimal gear
primarily for tubing and skiing
RPM's with 3 blade is around 4400 @ 40 mph
Thinking about alu vs ss due to cost

Any help would be appreciated!
Thanks

 

[b.gagnon]

I would just lower the pitch and try to get close to 4800rpm.. Or get some trim tabs! You will keep your speed and have good hole shot.

 

[89retta]

Try a 4 blade 19" Turning point prop. That's what I run on my boat but I have 4.3 Volvo GXI I have about 550lbs more weight then you. My numbers are 4800 rpm and 45 mph. Prop is aluminium so dirt cheap.

 

[Stingrayaxe]

I am using the Nemisis Quicksilver 4 blade. Quite pleased with the performance. I agree that the 19" pitch would be a good choice.