Aerodynamics and drag coefficient

[element180]

Just wondering if anyone has any info on aerodynamics.Since I doubt any of us has access to a wind tunnel (although knowing the people on this board,I could be wrong),I was just wondering about a few things that apply to real world cars.I've read a bit about drag coefficient and most of them give formulas and scientifical explanations that do nothing more than give me a bloody migrane.I realize it's all about frontal area,but I was just wondering a few thing applying to not only fuel ecomomy,but handling as well...



1.Does the drag coefficient change much,if at all,by lowering the car?
2.How much is it affected by chopping the top,channeling the body over the framerails?
3.How much is it affected by raking the windshield? (I realize it is affected by this but how much and how much rake is required to gain a noticable difference)
4.How much does the rake of the body affect it?I've heard that a 1 degree rake and no rear spoiler seems to be best for a '69 Camaro for example
5.How much do brake cooling ducts affect it?
6.I realize the grill opening adds to the drag coefficient,but how would someone overcome this?
7.What kind of upgrades to the cooling system wound be required to cool the engine if the grille opening size was reduced?
8.How much does an underbody tray affect it?
9.Does tire width play into it at all since most people are going for wider,and wider wheel/tire combos
10.Don't you just hate people like me that ask so many questions in one post