I went with the GM Racing rear spoiler. More downforce above 90mph. It's the piece many of the hardtop teams have been running in World Challenge. I'm not going roadracing all that often, but it's a look with functionality I wanted.
On 2001-04-16 23:48, N4C5S posted this:
Short answer? Don't change your rear facia, unless it meets these requirements. And even then, ask for aero numbers...Unless you're all show and no go...or just want more flash than dash. /phpBB/images/smiles/icon_smile.gif
Feel free to step in and post your comments...or corrections....
The above information was gleaned from a taped interview I saw once with a GM engineer and from All Corvettes Are Red...
Spectre's rear facia is to a great degree a similar profile but as it's a complete facia, therefore "built in" looking. Their's has a tad bit less overall area as the far left and right ends taper into the car more.
I believe wider tires are going to add more forward resistance to be overcome than a subtle tail flip.
Your point is well taken and agrees with my thought that every mod has a plus and some additional compromise. I weigh the balance and you can believe I'm really particular about what goes on my 'vette.
I researched this one pretty well with folks that have a better than average understanding of the car. I think I have a better than average understanding of the C5 as well, but that's another story.