quote from bjhines "The Type3 airdam was initially tested by simply bolting it on. Initially there was no attempt to seal the inlet to the radiator or the sides. It performed poorly in this configuration. We were so discouraged by the initial results we almost didnt blow it again. We were surpised that adding a little bit of a shelf between the radiator crossmember and the inlet of the airdam not only improved things, It actually transformed the entire car. We blew it again with even more tape sealing off even more of the area behind the airdam and things improved again! There is not much physical difference in what we did. A simple strip of foamboard and some extra tape on the sides COMPLETELY out of view turned the airdam from a total failure into a dream come true!."
I'm running the type-3 air dam on my 280 and now that i have swaped in the v8 i have cooling problems, car is running stock raidiator with dual elect fans. temps are at 190-215 degrees with a 180 degree thermostat... I completely agree that air once past the air dam hits the face of the radiator and shoots down under the car, im in the process of building cardboard ducts to mask all the areas the air is escapeing...
i belive it will cool the car down alot at speed, if it doesnt work i simply need a bigger radiator!!
andrew