I am considering upgrading my 2 blade prop to a 3 blade prop on my 1977 Cherokee 235 Pathfinder. Anyone done this in the past? I have heard it will increase my rate of climb after takeoff? Any other benefits or negatives I should be aware of? I will be moving to Colorado late 2014 or mid 2015 and am wondering if it will increase my aircraft ceiling if I need to climb over a hill/mountain as well. Lastly, wondering if there will be an impact to my cruise/GPH consumption.