We extend to you a cordial "WELCOME ABOARD !" Come on in, make yourself at home, we are a friendly group of enthusiasts, and we also appreciate the classic Chris Craft Roamer, Corsair, and Lancer boats too , as they are all on the same family tree and share much in common ! Just start by posting a note introducing yourself to the group, that's all it takes here (we don't ask for or retain any personal information here, because our intention is to just "have fun and share information".
From the Mariners museum hull card, #3474 prop was listed on Freeman's 427- powered 1970, which is essentially a 23 Commander but with Lancer Premier badge. That is a 14x14 SC (super cup), on a 1-1/4 shaft.
There is a lot of science in prop blade profiles, ACME is a premium brand. We are going to be getting data from Freeman at various RPM with HPS speed readings, and he will verify what prop his boat actually has. Right now we are not sure what it has