prop questions

3style

Recruit
Joined
Sep 9, 2018
Messages
2
hey guys I’m new to the site. I have a 95 Crownline I recently upgraded the 305 to a 350, it has the alpha one outdrive. My question, I’m green to the outdrive part of this keep in mind, how do I know if I’m running the right pitch prop or not? I have a 3-blade SS 19 on it now. I tried a 17 last summer and it just seemed to cavitate. Would a 4-blade 17 help me any?
 

SkiGuy1980

Petty Officer 2nd Class
Joined
Aug 10, 2017
Messages
138
Take a look at the posts at the top of this section. LIkely will need your WOT numbers to be able to tell you accurately.

I do have some experience with this engine though - I have a 2016 21SS with a 350 mag. The boat came with a 21P 3 blade aluminum and it would cavitate like crazy! I switched to a 4 blade 18P stainless and dramatically improved hole shot and got rid of the cavitation problem. I don't know if it was the change in pitch or the 4 blade, but it has been a game changer. My RPM's are just over 4800, 53 MPH, just a ton of torque getting out of the hole.
 
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