Correct Prop Size for 1989 Gulfstream I/O

[dipthenet]

Does anyone know what the correct prop size would be for my boat. It has a 350 Mercruiser with 260hp. Also an alpha one. I dont know the gear ratio of the alpha. My boat is working very hard to get on plane, once on plane it runs great. Thanks for the help.

 

[BabyG]

I just read up on props and it seems like it's a trade off speed to hole shot to gas economy. SO if it runs good be happy. I you prop it for a hole shot you will suffer in other areas.

 

[dipthenet]

Thanks. I think the prop is more than likely correct. I think my issue is in the fuel system or my timing. The boat performs great after plane. Sputters and struggles at times to get over 3000 rpm's.