1989 Penn Yan 242 Prop size

[DEFIANCE1]

I have a 1989 Penn Yan 242 with a 305 and alpha one outdrive. I am looking for a new prop for the boat. Originally the boat had a 17 pitch prop and it seemed that it was not aggresive enough for the boat, great hole shot but the boat would over rev. I had a 21 pitch prop that came off my fathers boat and I tried that but that one seems to aggresive. Im not 100% sure on the diameter of these two props but I think they both are 14inches. The 17p at WOT would run approx. 35mph, the 21p is running 32mph.

Does anyone else own this same boat or a similar one that can help me with the correct diameter and pitch? Any information would be appreciated.

[Diversion]

Not sure of the diameter, but I run a 19P three blade stainless on my 1989 245 Contender with a 350 and alpha one outdrive. Trolls down good, runs great at about 3,000 RPMs which is about 28 mph.

[ohyeah]

I run a PennYan 225, Outrage.

Old prop was a 3 blade, 17 pitch, 14.5" diameter. 190hp Merc would "bog" down in mid rpm range and couldn't hold plane under 18mph.

The great guys at PropGods suggested a stainless, 3 blade, 15 pitch, 15.75" diameter. Only raised my rpms by 200, but will now hold plane well at 14mph. Did also improve planing ability.

Prior 2800rpms/22mph Current 3000rpms/22mph

Very, very glad I spent the money and time to talk to ALOT of prop retailers.