Gotta stick in my 2 cents here.  I'm probably reading more into this than
is 
there, but just want to make sure.  When you refer to "the difference in
RPM" 
 I hope you don't mean the discrepancy between ther indicated (tach) RPM
and 
the measured RPM.  That has nothing to do with the prop.

As far as the statement about repitching, someone's got it backwards, as
Ed 
pointed out.  INcreasing pitch, eg going from 48 to 50, is a step in the 
cruise direction and will decrease your climb RPM, climb performance and 
static RPM.

For maximum climb HP, reduce the pitch of the prop untiil your static RPM
is 
at the upper limit.  For maximum cruise HP, increase the pitch till the 
static RPM is at the minimum.

John


> >  I am showing 2375RPM on my tach at cruise  
> at
>  > 7500' consistintely.  But when I use a portable digital RPM meter it 
shows 
> my
>  > true RPM at 2275. 

.......snip...........
 
>  > My IA said it could be that I have a climb prop and that is what
makes 
the
>  > difference in RPM.  He also said if I want to have the prop adjusted
I 
> should
>  > have it readjusted for a cruise prop by removing some of the 
twist/pitch.  
> He
>  > indicated this would provide more horse power by allowing more RPM
???   

.......snip...........
 
>  >  > 1.   Will a reduced pitch on the prop give me correct RPM and more

> horsepower?

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