Bumper air dams
Just wondering if some of you have an opinion as to whether an air dam serves a purpose, especially when towing . I have an older 95 Silverado that seems to have alot of heat that builds up in the eng...
Forum Discussion
JIMNLIN wrote:sch911 wrote:
The air dam is to assist in low speed stop and go traffic cooling. It's there to stop hot air from the engine box from recirculating back into the condenser and radiator. They have no affect on helping cooling while driving down the road.
Actually the air dam does little at low speeds around town/city traffic.....thats where the trucks cooling fan(s) come to play.
The lower air dam creates low pressure under the engine bay at speed allowing better air flow through the engine bay and on out the bottom.
Some years back one GM truck forum had pics and diagrams of air flow through the radiator and out the bottom of the engine bay with a without the air dam on trucks at various speeds.
Well apparently you know more than the OEM engineers who release them I guess.... Sorry but that's why it's there!
