PITCH QUESTION FOR PIPER J5

I HAVE A PIPER J5A THAT HAS BEEN REPOWERED WITH A O-235C1 115HP 2800 RPM REDLINE. I HAVE 26" GOODYEARS AND BABY BUSHWHEEL. WHAT PITCH SHOULD I RUN ON THIS AIRCRAFT. RIGHT NOW THE AM76-2 IS PITCHED AT 49 AND I CAN ONLY TURN 2450 AT 1000 MSL LEVEL FLIGHT, FULL THROTTLE. THE BOOK SHOWS 44 FOR A CLIMB PROP ON A PA-12 AND PA-18 WITH THE SAME ENGINE. I'M NOT READY FOR GRAVEL BARS UNTIL I DEVELOP MORE HP. THANKS FOR THE INPUT.

TCDS or STC paperwork should give a static rpm range. You can figure 50 rpm per inch of pitch.