jdchristian3
Full Access Member
the ford air dams are very important. sometimes. each truck is different. my body and i removed the ones on our trucks, but all we did was off-road them or highway. if we had a heavy load, it was just on the back roads... their purpose is simple... keep the ground level, hot (heated by the black asphualt) air from coming up under the engine and causing an overheat condition. the lower the dam, the better your cooling system functions on the highway, especially under heavy loads... repair it, or have a marine shop look at it. some bodyshops have a good fiberglass guy... check a shop the speciallizes in ricers... they use alot of fibercrap...