1967 Merc ss650 Prop

[tgp***]

I would like would run a 1967 Merc ss650 on a 18 ft aluminum runabout.

Is the Mercury Prop Chart (attached) an accurate way to judge if the motor will power the boat?
1972 StarCraft 18' Holiday Aluminum OB (Boat specs attached)

I see it as putting the correct prop on the boat if the prop chart is accurate. 1st image gives WOT RPMs for a ss650 Mercury outboard, prop numbers, diameter, pitch, gross load, boat size, and approximate MPH.

Would I be correct in following the prop chart in thinking that this motor will be adequate for powering the boat?
w/ a 13 or 13.5 inch prop w/ a 13 pitch in either a 2 or 3 blade configuration. Thanks for your replies in advance

 

[jestor68]

Re: 1967 Merc ss650 Prop

The 13 pitch sounds right. (The Mercury prop selector agrees.) The diameter will be 13-14" diameter, depending on what brand you buy.

A 3 blade would be the choice of what is available today(3 and 4 blade props).