Top speed
Race Director
Joined: Mar 2001
Posts: 14,480
Likes: 132
From: PA
So far, I've been taking it relatively easy on the car since I'm still breaking it in. But I have hit as high as 180 on one occasion. I'm wondering what my top speed in 5th would be if I took it to the 7000 RPM redline. Would that be enough RPM to get to 200? With my horsepower, I would think it should be able to do it fairly easy. Opinions?
Premium Supporting Vendor
Joined: Oct 2004
Posts: 23,599
Likes: 1,224
From: Providing the most proven supercharger kits for your C5/6/7 609-752-0321
Originally Posted by Nat04Z06
So far, I've been taking it relatively easy on the car since I'm still breaking it in. But I have hit as high as 180 on one occasion. I'm wondering what my top speed in 5th would be if I took it to the 7000 RPM redline. Would that be enough RPM to get to 200? With my horsepower, I would think it should be able to do it fairly easy. Opinions?
Nick told me about your little high speed pursuit with each other.
I would think (not from experience
) that 200 is no problem with your set up Nat.I have been told by guys that do the standing mile races etc, that if you try and max speed a high hp car in sixth gear (250+) that the gears, being so small at that ratio, will actually melt. Although that I really have not tried.
NCM, WSCC & SCC Member
Joined: Oct 2002
Posts: 2,900
Likes: 1
I have tapped 200+ mph in my modified Z06 Vette.
140-150, hundreds of times.
Ground effects, C5R type race suspension and a race brake setup do help a lot. I would NOT do this in an unmodified C5. Lift gets ugly.
Brent
P.S. My modified ZR1 to 185 or so.
140-150, hundreds of times.
Ground effects, C5R type race suspension and a race brake setup do help a lot. I would NOT do this in an unmodified C5. Lift gets ugly.
Brent
P.S. My modified ZR1 to 185 or so.
Racer
Joined: Dec 2003
Posts: 331
Likes: 1
From: Black Forest Colorado
Originally Posted by DOUG @ ECS
Nick told me about your little high speed pursuit with each other.
I would think (not from experience ) that 200 is no problem with your set up Nat.
I have been told by guys that do the standing mile races etc, that if you try and max speed a high hp car in sixth gear (250+) that the gears, being so small at that ratio, will actually melt. Although that I really have not tried.
I would think (not from experience
) that 200 is no problem with your set up Nat.I have been told by guys that do the standing mile races etc, that if you try and max speed a high hp car in sixth gear (250+) that the gears, being so small at that ratio, will actually melt. Although that I really have not tried.
Race Director
Joined: Nov 2000
Posts: 11,221
Likes: 899
From: CA
2017 C5 of the Year Finalist
St. Jude Donor '08
Originally Posted by nextphasemarko
161 mph in a bone stock 94 LT-1 M6 and it was still pulling.....got scared on the highway I was on (too many turns)
165 mph in the C5 M6 vert....ran out of room. Time seems to stand still, but the scenery flies by.....
JB, you run out of room or what? You got enough power to go over 200 mph, no?
165 mph in the C5 M6 vert....ran out of room. Time seems to stand still, but the scenery flies by.....
JB, you run out of room or what? You got enough power to go over 200 mph, no?
I'm sure, given a nice clean place to do it, 200 would not be a problem at my power level. I would certainly have someone go over all the critical points of stress, and make sure everything is nice and tight before I made the pull!!
I run a Unitrax triple cryoed treated 373 dif with hardended shaft and modified clutch pacs for a "Posi traction effect".
Here's a quick pull to about 170 MPH. You can see where the tach is in fifth gear. I find that I can usually go to about 175 in fifth, then go to sixth.
Click Below for vid
Hard pull
JB
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)
Joe Kucinski
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!
Verdad Gallardo
Top 10 Corvettes Coming to Mecum Indy 2026!
Brett Foote
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!
Michael S. Palmer
10 Revolutionary 'Corvette Firsts' Most People Don't Know
Joe Kucinski
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2
Michael S. Palmer
2027 Corvette vs The World: Every C8 vs Its Closest Competitor
Joe Kucinski
10 Most Common Corvette Problems of the Last 20 Years!
Joe Kucinski
5 MOST and 5 LEAST Popular Corvette Model Years in History!
Joe Kucinski
Race Director
Joined: Nov 2000
Posts: 11,221
Likes: 899
From: CA
2017 C5 of the Year Finalist
St. Jude Donor '08
Originally Posted by COLORADO FRC
We have a guy who runs in the open road races and mile races. He hasn't hit 200 yet (within the mile limit). The car is pushing over 700 rwhp. They changed the gears, his 4th, 5th and 6th are all much closer together. Prior to the custom gearing, 5th was always the top speed gear, the car can't push 6th and actually loses MPH. He added front wings, a vented hood and a decent sized rear spoiler because of the amount of lift he was getting on the front end at speeds over 165 mph. Also, the car is slammed to the ground.
I do run a Vararam, that helps feed the blower at speeds over 90, so maybe that helps...
JB
Safety Car
Joined: Jun 2004
Posts: 4,921
Likes: 1
From: Minburn Ia
Originally Posted by Nat04Z06
So far, I've been taking it relatively easy on the car since I'm still breaking it in. But I have hit as high as 180 on one occasion. I'm wondering what my top speed in 5th would be if I took it to the 7000 RPM redline. Would that be enough RPM to get to 200? With my horsepower, I would think it should be able to do it fairly easy. Opinions?
However, now the computer code has been "picked" ... perhaps 205 or so may be there????
Safety Car
Joined: Jun 2004
Posts: 4,921
Likes: 1
From: Minburn Ia
Sounds like somewhere around 165-170 ... in a C5 ... is where the aerodynamics start to become a real issue.
I hit 160 ... calm day ... very stable up to that point, but I backed off.
So I can't comment on those higher speed 'aero issues' some have raised here.
I hit 160 ... calm day ... very stable up to that point, but I backed off.
So I can't comment on those higher speed 'aero issues' some have raised here.
Safety Car
Joined: Jun 2004
Posts: 4,921
Likes: 1
From: Minburn Ia
Great Vid JBS 
Love that paintjob on your car ... and the wheels.
Perhaps on the next pull for top speed ... you could get a split screen view. Road on top ... with tach/speed down in bottom corner. Would need two cameras to obtain.
\
Do your 200+ trials at the Salt Bed flats in Utah/Nev .... although elevation there would hurt engine performance slightly.
Love that paintjob on your car ... and the wheels.Perhaps on the next pull for top speed ... you could get a split screen view. Road on top ... with tach/speed down in bottom corner. Would need two cameras to obtain.
\
Do your 200+ trials at the Salt Bed flats in Utah/Nev .... although elevation there would hurt engine performance slightly.