Always wondered what kind of speed you would lose by having a convertible Z28. My one friend explained that you lose speed because of the convertible. Why is that?

 

It would most likely be less aerodynamic. Top speed is usually limited by aerodymanic drag, which increases with the cube of the velocity.

On the other hand, it never hurt this car, which was capable of running low 8's at over 165 MPH. Did require an extended spoiler in the rear to keep the downforce high.

http://www.injuneer.com/images/photo...B/IMG_0710.jpg
http://www.injuneer.com/images/photo.../DCP03800a.jpg

 

The convertible top does not have as good an aerodynamic shape, as the hatch back. Flow off the back of the car. This is why the C5R Corvettes that raced at Le Mans were hatch backs and not ZO6's(hard tops).
Most convertibles are heavier then their counterparts also.

 

Did anyone(mag) every reported a top speed in a stock vert. I don't think so.

 

I'm supprised your able to keep the top on at 165. I've seen some targa tops and T-tops come off at those speeds. They were sustained 165+ speeds though.

 

So your saying more weight and less aerodynamic. Thank you much

 

So whats everyones gross weight on the sticker located inside the drivers door? My vert says 4290 lbs. Someone told me that this is with full fluids and 4 passengers of some average weight.

 

Camaro weights:

[link deleted - see below]

95 Z28 convertible weighs 90# more than a coupe.

 

Got this warning using Mac/Firefox.

Reported Attack Site!

This web site at www.f-body.org has been reported as an attack site and has been blocked based on your security preferences.

Attack sites try to install programs that steal private information, use your computer to attack others, or damage your system.

Some attack sites intentionally distribute harmful software, but many are compromised without the knowledge or permission of their owners.

 

We'll delete the link until we can check further.

 

Hope I didn't confuse anyone. The total weight of the car doesn't have much effect on top speed. Just on how long it takes you to get there.
For instance, because of the low friction of the surface at the Salt Flats, a slightly heavier car can be better.

 

With regard to the statement that Firefox lists the f-body.org site as an attack site, this is an explanation from the website:
I had no trouble reaching the site from a system that includes significant safeguards.