I have an 09 27hp Kohler PD. It's on a 1654 G3 boat with a ribbed bottom. I know, I know, not the best hull configuration but I'm old, retired, and love the layout of the boat and blind. It really works good for an old guy and it's paid for!!

The motor originally came with a 3 blade prop when I bought it new. I replaced that with a 2 blade prop at PD's suggestion. I was trying to get better top end out of the boat. I'm pretty unsatisfied with the combination. My motor will rev to about 4300 rpm with no load. With the boat loaded, and going, I get it up to about 8 mph.. The loaded rpm is from 3200 to 3600 depending on the trim. Sad thing is that at an idle with the clutch engaged, the boat will go almost 6 mph!!!

I'm thinking that a lower pitch propeller would give me an improvement in speed and allow the boat to increase it's top end rpms while loaded.

Prodrive's website looks like they only offer one prop for my motor.

I appreciate any recommendations and info on who makes props to fit my motor. Thanks.