kageman

I am curious if anyone out there is using whipples on the 525 efi's in a 42', if so how has the reliability been and what type of speeds are you getting. What octance requirements for gas do they need?

Any input would be appreciated as I am seriously considering installing them.

stevedg

Try herring 6 blade props.
Well worth the price, should pick up 2-4 MPH.