C7 drag coefficient ?

Reply Subscribe

Thread Tools

Search this Thread

Jan 17, 2013 | 07:49 PM

DRLC5

Thread Starter

Le Mans Master

Joined: Nov 2004

Posts: 5,886

Likes: 371

From: Cape Coral FL

C7 drag coefficient ?

The base C6 has a 0.28 drag coefficient to 0.34 for I think the Z06/ZR1 & GS I think?. Has the C7 numbers been reported?

Jan 17, 2013 | 08:16 PM

JoesC5

Team Owner

Joined: Sep 1999

Posts: 41,732

Likes: 1,718

From: Springfield MO

Quote:

Originally Posted by DRLC5

The base C6 has a 0.28 drag coefficient to 0.34 for I think the Z06/ZR1 & GS I think?. Has the C7 numbers been reported?

I think I saw .30 listed somewhere. I don't put too much faith in what GM says about Cd's. The C5 was .29. Then the came out with the C6 and it was .287. The original Cd on the Z06 was .31 but Gm later changed it to .34, without any changes done to the car to increase drag.

Independent back to back tests of all six generations in a wind tunnel that is used by most of the NASCAR teams, showed that the C5 coupe actually had a lower Cd then the C6 coupe. All were done in the same wind tunnel by the same people, so not like comparing acceleration of different cars on different tracks on different days driven by different people, etc.

Jan 17, 2013 | 08:45 PM

Kappa

Melting Slicks

Joined: Aug 2005

Posts: 2,874

Likes: 614

I just hope that its a no-lift car like the ZL1. They should be able to that with a clean sheet design.

That was one of the main weaknesses of the C6 in any body form. Too much lift.

Jan 17, 2013 | 09:02 PM

JoesC5

Team Owner

Joined: Sep 1999

Posts: 41,732

Likes: 1,718

From: Springfield MO

Quote:

Originally Posted by Kappa

I just hope that its a no-lift car like the ZL1. They should be able to that with a clean sheet design.

That was one of the main weaknesses of the C6 in any body form. Too much lift.

I've had my C6 Z06 to 162 on the track, and no matter how hard I pulled back on the sterring wheel, the damn car refused to lift off.

Jan 17, 2013 | 09:05 PM

Kappa

Melting Slicks

Joined: Aug 2005

Posts: 2,874

Likes: 614

Quote:

Originally Posted by JoesC5

I've had my C6 Z06 to 162 on the track, and no matter how hard I pulled back on the sterring wheel, the damn car refused to lift off.

Jan 17, 2013 | 09:06 PM

DREAMERAK

Melting Slicks

Joined: Jun 2005

Posts: 2,216

Likes: 1

St. Jude Donor '12-'13-'14, '16

Quote:

Originally Posted by JoesC5

I've had my C6 Z06 to 162 on the track, and no matter how hard I pulled back on the sterring wheel, the damn car refused to lift off.

Jan 17, 2013 | 09:24 PM

Gearhead Jim

Team Owner

Joined: Sep 2000

Posts: 25,029

Likes: 2,719

From: Far NW 'burbs of Chicago

St. Jude Donor '13

Quote:

Originally Posted by JoesC5

I think I saw .30 listed somewhere. I don't put too much faith in what GM says about Cd's. The C5 was .29. Then the came out with the C6 and it was .287. The original Cd on the Z06 was .31 but Gm later changed it to .34, without any changes done to the car to increase drag.

Independent back to back tests of all six generations in a wind tunnel that is used by most of the NASCAR teams, showed that the C5 coupe actually had a lower Cd then the C6 coupe. All were done in the same wind tunnel by the same people, so not like comparing acceleration of different cars on different tracks on different days driven by different people, etc.

Yeah, a lot of the performance numbers seem to be written by the marketing department.

When the Z06 came out for 2001 with 385 hp, they claimed 3.9 0-60.
But with similar weight and 436 hp, the C6 only claims 4.1