"Frank Whiteley" wrote in
ups.com:

I should mention that since we had no autogas option on the Pawnee D
model, we went with the 250HP STC also on our spring rebuild and a new
prop. Result appears close to 100fpm better climb on same fuel burn,
or about one more tow per tach hour.

Frank


Frank,
Is the 250HP conversion louder? Higher RPM? Or, maybe just more
compression and a bigger prop?
-Bob Korves