Originally Posted by green-ghost
Im curious as to the 90 mph limit?
Good news about the positive effects of a front lip extender. At my job I see all sorts of parts getting thrown out that could be modified into just about anything. Going to keep an eye out for a "break away" lip extender
The 90 MPH is when the "lift" resulting from the shape of the Crossfire begins to effect rear wheel adhesion. The wing spoils the lift and places a downforce on the rear of the car. This in turn is a parasitic drag.
A breakaway front air dam? I have had several of them break away. Including the whole front end of Crumpy's minivan. Does not make for a good day.
I also had a front extended air dam on my 75 Olds Starfire for a while. Looked like a cow catcher but created a wedge shape with downforce and supposedly lowered my CoD factor. But only a little as the car had a reported .33 CoD from the factory.
It ended up on the parking lot just about everytime I drove it so I took it off.
A front air dam wedging from the center at an angle back to just in front of the rear wheels is very effective.What you are trying to create is a mass of air, behind the air dam, that is actually moving in a general way with the car.
This is for onehundredeighty. When we tested air pressure on the Crossie for the infamous "ram Air" experiment, one of the highest pressure points was right in front of the front tires as the air passes under the front air dam of the car. That high pressure point is where my CAI inlet is placed.
I push close to 200 HP at the wheels, so I'm satisfied with the data we got on that trip.
