Table: vehicle_specs_2
Columns: model
engine
displacement
valvetrain
fuel_system
max_power_at_rpm
max_torque_at_rpm

Question: What is the maximum torque that has 2,445 CC Displacement, and an Iveco 8144.61 engine?
SQL: SELECT "max_torque_at_rpm" FROM vehicle_specs_2 WHERE "displacement" = '2,445 cc' AND "engine" = 'iveco 8144.61'

Question: What Valvetrain has a fuel system made up of petrol engines?
SQL: SELECT "valvetrain" FROM vehicle_specs_2 WHERE "fuel_system" = 'petrol engines'