[frank grant]

I currently have ny stock 4 blade prop on my sc21 with 5,0 liter. The boat currently runs 48mph at WOT and runs at 4800 rpm. I would like to get my top speed up to low 50's.

[mikeyt]

What pitch is your existing prop? I believe the operating range for your motor is 4400 - 4800rpms at WOT so you dont have much room to play with here.

[frank grant]

Off my head I dont now what my stock prop is, boat is still in storage but i would like to go to a stainless prop this summer.

[mikeyt]

Until we know what pitch prop you have on the boat now, there isn't much we can suggest.

[frank grant]

As soon as i get it i will get back thanks