The following table of power settings is for operating the P-40 with Grade 100 fuel:
 ALLISON ENGINE
GRADE 100 FUEL
MANIFOLD PRESSURE
ENGINE RPM

IDLING

1000

TAKEOFF (Maximum)

52" (for 1 minute)
3000

TAKEOFF (Recommended)

45" (for 5 minutes)
3000

CLIMB (Maximum)

45.5" (for 5 minutes)
2600

CLIMB (Recommended)

35"
2500

CRUISE (Maximum)

37.2"
2400

CRUISE (Recommended)

30"
2300

LANDING

2600
GRADE 100 FUEL
OIL PRESSURE
OIL TEMP.
FUEL PRESSURE
COOLANT TEMP.

MAXIMUM
85 psi
85C
18 psi
125C

MINIMUM
55 psi
60C
16 psi
85C

RECOMMENDED
60-70 psi
70C-80C
16-18 psi
95C-105C