Top Speed in C5?
Team Owner
Joined: Aug 2004
Posts: 24,129
Likes: 1,038
From: The Beautiful Pacific Northwest
St. Jude Donor '05-'06-'07-'08-'09, '14-'15-'16-'17-'18
Originally Posted by InSaNeKaMeL
What is the top speed of a fairly stock c5 mn6 3.42? I thought that the computer would not let you go over 160, is that true? What is your top speed?
-Steve
-Steve
My top speed has been considerably less so far.
BTW, you'll acheive your top speed in 5th gear, not 6th.
Race Director
Joined: Nov 2003
Posts: 11,061
Likes: 38
From: Menifee CA
Originally Posted by ditty22
iv hit 178 stock
Your speedo must be off
Ive done 165 and the car didnt feel to stable after i hit 160
And yes i have T1 bars, 04 Z06 shocks and springs
it must be air lift under car, since i dont have a diffuser(front spoiler)
Thread Starter
Pro
Joined: Jun 2004
Posts: 543
Likes: 1
From: Detroit MI
Originally Posted by MUKAKsC5
178?
Your speedo must be off
Ive done 165 and the car didnt feel to stable after i hit 160
And yes i have T1 bars, 04 Z06 shocks and springs
it must be air lift under car, since i dont have a diffuser(front spoiler)
Your speedo must be off
Ive done 165 and the car didnt feel to stable after i hit 160
And yes i have T1 bars, 04 Z06 shocks and springs
it must be air lift under car, since i dont have a diffuser(front spoiler)
Le Mans Master
Joined: Aug 2002
Posts: 8,222
Likes: 0
From: Norfolk VA
Originally Posted by MUKAKsC5
178?
Your speedo must be off
Ive done 165 and the car didnt feel to stable after i hit 160
And yes i have T1 bars, 04 Z06 shocks and springs
it must be air lift under car, since i dont have a diffuser(front spoiler)
Your speedo must be off
Ive done 165 and the car didnt feel to stable after i hit 160
And yes i have T1 bars, 04 Z06 shocks and springs
it must be air lift under car, since i dont have a diffuser(front spoiler)
My car is rock solid at high speeds, I've probably got as much time over 100mph as eveyone else in this section combined and much of that is above 140 I can tell you that with a good allignment and at the correct ride hight, the car is very stable.
My top speed is 180mph. I held it for a while hoping for 181, but i didn't have it. I've thought about taping up the nose of the car to cut out some of the drag, but didn't really see the point of it.
If you do the math on on the gear ratios with stock tires, 5th gear at 6000rpm is 186mph
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Instructor
Joined: Jun 2010
Posts: 228
Likes: 2
From: California
Looking at factory program using EFILIVE my speed limiter was set at 181. Mine is a 99. Last car was 02 F body and that was set at 167. After research found that the F body's are just not safe much over 160. However Y body's should be good for 200.
Le Mans Master
Joined: Aug 2001
Posts: 7,064
Likes: 18
From: Arizona
I have seen 189 in my old C5 (520 RWHP)... I have done well over 200 in this one. (925 RWHP) (GPS Verified)
Mine is not stock though.
At 180 the windows pop, due to the vacuum outside the car is greater than inside...
*** Private race track in a foreign country.
Mine is not stock though.
At 180 the windows pop, due to the vacuum outside the car is greater than inside...
*** Private race track in a foreign country.
Last edited by ICULUKN-C5; Dec 15, 2010 at 04:35 PM.
Le Mans Master
Joined: Jan 2004
Posts: 9,488
Likes: 1,743
From: Knoxville Tn
Well to tell the truth i hit 173 tonight and wanted to know what others have hit. Yes It was not very stable, but there was nothing in the way and did not have to move alot. My car need new front tires so that made it worse when trying to coast to a safer speed. Car did not seem to be lifting any. She felt like she had more in her, 500 more rpm till rev limiter(or more). But thier was a bend about 3 miles ahead and I just let off, went to netural and coasted for miles.
I don't want to call you a dumbazz,,,,,
