Hi Ron, The new prop is a Performance Prop, 74 L x 88 P. 215 is ok (it was still going up) but I was getting 220 on the old -B drive and 68 x 71 prop. Full disclosure: 220 was on a 57 deg day and 215 was on a 75 deg day. Tracy Tracy, What is the diameter and pitch of your new prop and who made it? Did you also mention that you were indicating 215 MPH? WOW! Could you call the prop manufacture and ask them to figure out your HP? I'll see you at SnF Ron
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