User guide

62
The following data is supplied only as a reference; you should use your Lycoming engine graphs to verify the
accuracy of the display. The Delta HP number is the increase in actual HP that the engine will produce for
the same manifold and RPM at increased Altitude.
Engine O‐360    
Rated
HP 180    
RPM
55%
MAP
75%
MAP  Altitude
Delta
HP
2000 21.6 26.7  2000 2.3
2100 21 26  4000 4.6
2200 20.3 25.2  6000 6.9
2300 19.8 24.6  8000 9.1
2400 19.2 23.9  10000 11.4
2500 18.9 23.5  12000 13.7
2600 18.6 23.2  14000 16
2700 18.2 22.7   
Engine O‐320    
Rated
HP 160    
RPM
55%
MAP
75%
MAP  Altitude
Delta
HP
2000 21.4 26.4  2000 2
2100 20.8 26  4000 4.1
2200 20 25.6  6000 6.1
2300 20.3 24.9  8000 8.1
2400 19.6 24.3  10000 10.1
2500 19.2 23.8  12000 12.2
2600 18.8 23.2  14000 14.2
2700 18.4 23.1   
Engine IO‐540    
Rated
HP 260    
RPM
55%
MAP
75%
MAP  Altitude
Delta
HP
2000 23.2 29.4 2000 5
2100 22.4 28.1 4000 9
2200 21.5 26.8 6000 13
2300 20.7 25.7 8000 17
2400 19.8 24.7 10000 21
2500 19.3 24 12000 25
2600 18.8 23.3 14000 29
2700 18.5 22.5