I have a 1996 26 Scarab with a 502 with B&M 250 with 5lbs. of boost and a 1050 dominator, a Merc 2" Shortie with 1.34 gear ratio, and a lab finished 28 p Bravo 1 rh prop. Problem is I can only turn it 4800 rpms. I tried a 25 p Mirage Plus but could not get on plane nor get to top speed without cavitation. I am wondering if my drive height is too high because trimed out to 8 I can make a decent rooster tail but no cavitation. Wondering if a 24 or 26 p Bravo 1 is a better choice or Hydromotive. Please give me your suggestions. My speedometer only reads about 70 but that would be 27 percent slip. Seems really high. I am not sure the speedo is correct. At 15 percent slip it would be 80 mph. I need to know what I am doing wrong here.

Thanks in advance.

There are too many variables to really help much. In general terms, a 28" Bravo is a lot of prop for a 1.36 drive. Unless you have a great deal of HP (750+) I am not surprised you can't turn that higher than 4800. I would recommend to try a 26" Bravo as your next step.

I believe you talked with Brad at our shop today. This means we are on the job to get you set up correctly.

If this is not true, let us know.

Brett

I did talk with Brad earlier. Thanks for the help.

I have a boss hammer 21'6" I JUST PUT IN A 502 WITH 500HP
WHAT PROP WOULD WORK FOR MAX SPEED, WHEN I HAD MY 454 310 HP MOTOR THE BOAT RAN 64 GPS WITH 4 PEOPLE AND A HALF FULL TANK OF GAS. tHE PROP I HAVE IS A 23P.

I have a 33' 1987 Sonic SE. It has twin 454's. I tried a 23-pitch 3-blade prop and hit a whopping 37mph. I changed to a 25-pitch and got 47mph. The engines were hitting 4500 rpm with the 25. That is probably high for the 454's. What gives? Any idea on what prop I should switch to???????????????