Tom
I have a 1973 NA plane and usually fly 23x23 as high as I can, I expect to see 145K and burn a little less than 20gph. Since you are burning the fuel you must be making good power so my guess is somethings draging your speed down. I had some reriging done years ago after I bought the plane and believe it helped the speed. You might have someone take a closer look at the airframe for rig.
|