Enter the wheel horsepower and select the drivetrain of the car to determine the brake HP (crank HP) from WHP. WHP (Wheel Horsepower) Drivetrain FWD Manual (10% loss)FWD Automatic (12% loss)RWD Manual (13% loss)RWD Automatic (15% loss)AWD Manual (18% loss)AWD Automatic (20% loss)4WD Truck / SUV (22% loss)Heavy 4WD / Performance AWD (25% loss) Engine … Continue reading WHP to HP (BHP/Crank HP) Calculator