This is incorrect - it's backwards. Both the 600's & 850's pull clean/cool air in from above the car (through the engine lid vents), the fan then blows the air into/through the radiator, & the (now-heated) air goes down the chute behind the radiator, then out the bottom of the car via the rear-facing "scoop". This is one of the reasons to have the lower shrouds in place; to keep this warm air (along with dust/road debris) from getting sucked back up into the engine bay (& then the radiator) as the car moves forward. The 850's have the lower "scoop" as part of the fixed sheetmetal, but the 600's have a separate hinged sheetmetal "scoop" bolted to the bottom edge of the chute wall (below the heater air intake flap). This hinged scoop is normally opened/closed by the thermostat rod unit fitted into the center of the 600's lower radiator tank.