Prop question

[skialta_86]

I'm sure this has been addressed here before. I have a C85 on my cub with a mac 7343. I don't think this is the correct prop for this engine but I get pretty good climb and OK cruise performance, and overall I'm happy with it. What kind of increased performance could I expect with the correct prop length? Any downside to running this current prop?

 

[JimC]

 

[huston marlowe]

 

[skialta_86]

 

[Cub420]

 

[Billj3cub]