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  1. C

    60's OMC small hub large hub props

    I have a 1963 75 HP Johnson mechanical shift. Right now I have a 10 x 9 1/4 prop for it and I want to prop up to get the RPM's down and get some more speed. I'm finding out that there was a large hub and a small hub prop. Mine has a small hub on it now. I have a couple beat up props that are...
  2. C

    Early 60's 75 HP Johnson general questions

    I have a 1963 75 HP on a 1965 Shell Lake and I am looking to put a different prop on it. As I was digging through my spares I noticed that some of them have a small diameter hub and some have a larger diameter hub. Upon searching I find out that both seem compatible. I am curious as to why they...
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