prop sizeing question

[minneman]

Im trying to find the right prop, I have a 1974 21' Starcraft Super Sport, alum V hull w/mercruiser 165 IL 6 cyl.

I have 3 props that came with the boat. these are the #'s

15 1/2 R 19 MWC

48-65992-84-21p also has 195 N stamped on side

48-58126-23 also has 23p A-1 on the side

Im also not sure what the max rpm should be..? (no red line)

The fastest Ive gotten out of the boat is aprox 36 mph gps and cant remember hitting 4000 rpm. with #2 listed prop. Id like to get a bit more speed out of her. suggestions for a Stainless?? All info Appreciated!

[Sifty]

Try jay at Soderbloom's he helped me out last week.

http://www.soderbloom.com/

Sifty

[Northlander]

Jays your man. He can tel ya what ya will need. I know he has a lot of props in now and should have what ya need on hand. If not its only a couple days to get it.

Great service and great prices.