C5 Top Speed

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Jul 2, 2007 | 01:46 PM

LT1SPUD

Thread Starter

Pro

Joined: Aug 2004

Posts: 737

Likes: 4

From: Decatur Alabama

C5 Top Speed

does anyone know what the top speed of a 350hp LS1 with MN6 and 3.42 butt gears is?????

just curious...........

Jul 2, 2007 | 01:58 PM

bonnell

Melting Slicks

Joined: Feb 2004

Posts: 2,791

Likes: 44

From: Loudon/Lake Mary Tennessee/Florida

I saw a list not long ago that shows 175 for the coupe and 163 for the convertible. I also saw 184 for the C6 and 190 for the '08 C6 with the new LS3.

Jul 2, 2007 | 02:14 PM

jc-untapped-z06

Racer

Joined: Jul 2006

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From: plant city florida

Jul 2, 2007 | 02:47 PM

R Devil

Le Mans Master

Joined: Sep 2006

Posts: 6,997

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From: Life is a game/Golf is serious. IA

More than enough.

Jul 2, 2007 | 02:52 PM

Dave68

Race Director

Joined: Dec 2000

Posts: 19,304

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From: San Diego CA

with just an aftermarket intake and cat-back, 2 C5 coupes have done 180; one was on the Bonneville salt flats and the other, on the Autobahn in Germany. Speed was measured/calculated using a military GPS.

Jul 2, 2007 | 03:16 PM

basicstrategy777

Race Director

Joined: Oct 2006

Posts: 13,404

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From: Glastonbury CT.

St. Jude Donor '11-'12-'13-'14-'15-'16-'17,'20, '21,'22, '23

What do you think the top end is for a 415 rwhp coupe with 3.90 gears, 6 speed ? ( Nitrous brings it up to 100 hp more ). I would guess the gearing will slow it down some.

777

Jul 2, 2007 | 04:30 PM

02MillenniumVette

Race Director

Joined: Aug 2001

Posts: 10,781

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From: Hurricane Alley

Its rated at 175mph but Ive heard about several that have gone in the 190's mph and they were stock.

Jul 2, 2007 | 04:31 PM

02MillenniumVette

Race Director

Joined: Aug 2001

Posts: 10,781

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From: Hurricane Alley

Quote:

Originally Posted by basicstrategy777

What do you think the top end is for a 415 rwhp coupe with 3.90 gears, 6 speed ? ( Nitrous brings it up to 100 hp more ). I would guess the gearing will slow it down some.

777

Correct me if Im wrong but a bigger gear usually lowers your top speed.

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Jul 2, 2007 | 04:32 PM

02gt350

Le Mans Master

Joined: Nov 2005

Posts: 5,451

Likes: 2

From: East Peoria Illinois

172 here when it had only catback and CAI, which means nothing. It still had a bit left in her. I say an honest 180. Z is a little slower

Jul 2, 2007 | 04:33 PM

#10

Alex1217

Team Owner

Joined: Mar 2002

Posts: 47,647

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From: Queens, New York Life begins at 183 mph....

St. Jude Donor '08-'09

Quote:

Originally Posted by basicstrategy777

What do you think the top end is for a 415 rwhp coupe with 3.90 gears, 6 speed ? ( Nitrous brings it up to 100 hp more ). I would guess the gearing will slow it down some.

777

A friend of mine has a heads and cam packaged coupe with 423 rwhp and 4.10 gears. The gears limited him to only 160 mph. You could probably get a bit more but the gears are definitely a hinderance to top speed.

Jul 2, 2007 | 05:23 PM

#11

FireLieutenantPhilly

Instructor

Joined: Jun 2007

Posts: 213

Likes: 0

From: Philadelphia Pa

158 MPH

Jul 2, 2007 | 06:00 PM

#12

RockyF150

Burning Brakes

Joined: Aug 2005

Posts: 886

Likes: 1

From: Mineral Wells WV

70 it's the speed limit here

Jul 2, 2007 | 09:10 PM

#13

photoguy

Safety Car

Joined: Jun 2006

Posts: 3,605

Likes: 2

From: Latrobe PA

GM rates the coupe at 174. Have had mine to 140 with no problem.

Performance Review
Magazine GM Spec. MT CD
Pub. Date Mar. 2001 Aug. 2001
Model Coupe Convert.
Transmission 6-speed manual 6-speed manual
0-30 mph (sec) NA 2.07 NA
0-40 mph NA 2.85 NA
0-50 mph NA 3.87 NA
0-60 mph NA 4.83 4.5
0-70 mph NA 6.20 NA
0-80 mph NA 7.89 NA
0-90 mph NA 9.67 NA
0-100 mph NA NA 10.6
0-110 mph NA NA NA
0-120 mph NA NA NA
0-130 mph NA NA NA
1/4 Mile (sec/mph) NA 13.10 / 109.1 13.1 / 111
Top Speed (mph) NA 174 162
0-100-0 mph, sec NA 16.44 NA
Braking (ft.) NA 116 (60 - 0 mph)
333 (100 - 0 mph) 162 (70 - 0 mph)
Lateral Accel. NA 0.90 g 0.90 g / 0.92 g**
** Stability Control on / off.

Jul 2, 2007 | 09:20 PM

#14

FactoryRaceCar

Race Director

Joined: Nov 2001

Posts: 18,682

Likes: 4

St. Jude Donor '05-'06-'07-'08-'09-'10-'11-'12

I have seen buck82MPH one time

I was scared sh!tless

Jul 2, 2007 | 09:49 PM

#15

photoguy

Safety Car

Joined: Jun 2006

Posts: 3,605

Likes: 2

From: Latrobe PA

Quote:

Originally Posted by FactoryRaceCar

I have seen buck82MPH one time

I was scared sh!tless

Jul 2, 2007 | 10:19 PM

#16

Silverbullet00

Race Director

Joined: Jan 2007

Posts: 18,643

Likes: 14

From: Norman Oklahoma - The Only State in the Union with no Blue Counties!

FRC that was 182 or maybe 282! you've been 82 in reverse!

Oh NOW I see the BUCK

Jul 2, 2007 | 10:26 PM

#17

moserbe

Race Director

Joined: Dec 2005

Posts: 11,664

Likes: 15

From: Wellsboro Pa

I would love to run mine flat out to the max speed. To bad there isn't a place close by that could accomodate this.

Jul 2, 2007 | 10:30 PM

#18

Cozmo

Team Owner

Joined: Aug 2003

Posts: 24,987

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From: Kerrville, Texas USA Hook 'em Horns!

CentralTX Events Coordinator

St. Jude Donor '03-'04-'05-'06-'07-'08-'09-'10-'11-'12-'13-'14-'15-'16-'17

Quote:

Originally Posted by FactoryRaceCar

I have seen buck82MPH one time

I was scared sh!tless

Jul 2, 2007 | 11:41 PM

#19

kawboy5792

Burning Brakes

Joined: May 2002

Posts: 831

Likes: 0

From: Iowa City IA

Quote:

Originally Posted by Dave68

Mine cracked 180 w/ headers, full exhaust, intake, blackwing, tune. MN6 3.42's and lowered.

PS: find a really really long straight place to do it...it takes a while.