LS1 Based Engine Tech LS1 / LS6 / LS2 / LS3 / LS7 Engine Tech
View Poll Results: How much go-go she got?
145-150mph
6
5.41%
150-155mph
7
6.31%
155-160mph
24
21.62%
160-165mph
36
32.43%
165-170mph
18
16.22%
170-175mph
7
6.31%
175+
13
11.71%
Voters: 111. You may not vote on this poll

Top Speed

Old May 2, 2005 | 08:46 PM
  #16  
sw89lt1's Avatar
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From: oklahoma
Re: Top Speed

you guys are nuckin futs. ive got mine to about 135 and that was good enough for me.
Old May 2, 2005 | 08:59 PM
  #17  
frmula1's Avatar
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Re: Top Speed

Originally Posted by sw89lt1
you guys are nuckin futs. ive got mine to about 135 and that was good enough for me.

i've had mine to 145 3 times


but i've had it to 140 7 times


and 130+ probably a dozen times.


and i've had it 3 months



only reason i haven't topped it out... is lack of safe road to continue on at that speed.



i mean... it can make you a little nervy


but if the road is right... i could cruise at 130 for an hour and be comfortable.

wouldn't do it with anyone in the car with me tho
Old May 2, 2005 | 09:11 PM
  #18  
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Re: Top Speed

Birch, I understand aero drag. My old '98 1LE Z28 once hit the stock limiter, what ever the stock limiter was set at.

With only 410rwhp, my '01 has ran 166 mph in 1 mile. These cars are more aerodynamic than you might give them credit for. 400rwhp will pull 190 but it will take almost 7 miles of straight to acheive that speed.
Old May 2, 2005 | 09:32 PM
  #19  
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From: Seattle, Washington
Re: Top Speed

Originally Posted by BirchMan98z
Our cars, despite the way they look, are only as aerodynamic as a crysler town & country minivan (exactly the same drag coeff., around .34)
Can you explain how such a curved body car would have the Drag Coeff of a Box? I'm not doubting you or stating you're wrong I just want to know why our cars have so much drag despite being so low.

Originally Posted by BirchMan98z
An fbody hitting those speeds without the proper equipment might just fly right off the road-- literally.
mental image had me chuckling... I guess this is why Ricer's have wings! Proper Equipment!

Originally Posted by BirchMan98z
You'll also note that most exotics come with boatloads of power to push them to high speeds, the power is necessary to overcome the extra drag created by top-speed aerodynamic packages and the force of the wind is increased exponentially as higher speeds are achieved.
Agreed... I saw a Lambo top off at 220 but after he passed 150 - 160 it took him FOREVER...
Old May 2, 2005 | 09:56 PM
  #20  
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From: Dallas/College Station
Re: Top Speed

fastest i've gone in mine so far is 135. Although that was on a stretch of road that i had to turn off of, so i had to shut down to make the turn. Road was probably only 1/3 mile tops.

gone 110 many times, haven't had the opportunity to push her too hard yet. I'm assuming 160.
Old May 2, 2005 | 10:05 PM
  #21  
brain's Avatar
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From: Columbia, SC, USA
Re: Top Speed

There is another factor besides drag coefficient. Its called frontal area. That will affect top speed as well. Thats where that minivan will lose, even with lots of power.
Old May 2, 2005 | 10:07 PM
  #22  
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From: Edmonton, AB, Canada
Re: Top Speed

there is a website with speedometer photos. Its off that website that they ahve a photo of an f-body driving by a radar that detects it going at 224mph. That was the fastest speed on that website and the only one where the speed was not shown on a speedometer.
Old May 3, 2005 | 12:48 AM
  #23  
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Joined: Jul 1998
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From: The Hutch, TX
Re: Top Speed

back in the 90's a camaro with a blown 383 LT1 went 212 mph with 2.73s and a six speed. in made it into GM high Tech performance. as for me, i've be somewhere above 155, i'd guess about 156-158 range.

Last edited by slowpoke96z28; May 3, 2005 at 12:52 AM.
Old May 3, 2005 | 10:06 AM
  #24  
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From: Farmington, MI
Re: Top Speed

There's also a vid floating around of a turbo'd SS that burries the speedo and the RPMs keep rising. I have it on disc at home, but no space left to host it. If I get a minute, I'll try and submit it to a free host and post the link.
Old May 3, 2005 | 01:37 PM
  #25  
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From: Ballwin, MO
Re: Top Speed

Lingenfelter's 383 Package pushed a 1995 Formula to about 192. Seeing as it was a magazine test, it may have had a little extra. Power, drag, and gearing are essential. If the gearing isn't right to get you to your peak power at the right speed, the car will fall on its face. Road & Track 6/95. It was a 6 speed with 3.23 gears.
Old May 3, 2005 | 02:00 PM
  #26  
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From: FTW, TX
Re: Top Speed

Originally Posted by frmula1
i've had mine to 145 3 times


but i've had it to 140 7 times


and 130+ probably a dozen times.


and i've had it 3 months



only reason i haven't topped it out... is lack of safe road to continue on at that speed.
i mean... it can make you a little nervy


but if the road is right... i could cruise at 130 for an hour and be comfortable.

wouldn't do it with anyone in the car with me tho
I hope you've at least upgraded your break pads and are running z rated tires. The tool that bought my 70 SS took it out and was running 120 in it, on a hot day with s rated tires. Idiot had the nerve to call me trying to find out where I got the tires so he could get them replaced. I told him he was stupid for it and SOL and hung up.

I've had my car over 2 years now and have only gotten it to 125. Thoughts of a nice big speeding ticket, car being impounded and jail time popped into my head so I slowed it down. You've only had your car for 3 months? Maybe you should slow it down and get used to it a bit more. Thats why young driver's insurance rates are so high. Going that fast, inanimate object tend to project greater gravitational forces and suck cars into them.

Z's and Formulas are limited to a lower speed due to them coming with lower speed rated tires. IIRC Z rated tires were an option for them but I don't think the factory recalibrated the limiter for that.
Old May 3, 2005 | 02:22 PM
  #27  
frmula1's Avatar
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Re: Top Speed

i am perfectly comfortable with my car...


i've driven 4th gen v8 f-bodies my whole driving life.


my tires are W rated (168mph)

and my brake upgrades are in sig
Old May 3, 2005 | 07:01 PM
  #28  
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Re: Top Speed

Video of my car hitting 166 mph in 1 mile from stop

Todd Carpenters old '96 Camaro has been clocked over 200 many times at various open road races. Dig around on google.

I drove my car in the BBORR a couple weeks ago. Averaged 125.264 over 118 miles, starting from a stop twice, and limited to a top speed of 140, I was clocked at 139 mph twice (car 125 in the 125 class).

My car is stable as a rock at 140 or 160.
Old May 3, 2005 | 07:27 PM
  #29  
frmula1's Avatar
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From: Somewhere between a shotgun barrel, and a blood spatter on the wall.
Re: Top Speed

Originally Posted by chuck
Video of my car hitting 166 mph in 1 mile from stop

Todd Carpenters old '96 Camaro has been clocked over 200 many times at various open road races. Dig around on google.

I drove my car in the BBORR a couple weeks ago. Averaged 125.264 over 118 miles, starting from a stop twice, and limited to a top speed of 140, I was clocked at 139 mph twice (car 125 in the 125 class).

My car is stable as a rock at 140 or 160.

link doesn't work

just brings me to this "internet optimizer" search engine home page
Old May 3, 2005 | 07:36 PM
  #30  
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Re: Top Speed

Originally Posted by MasterEvilAce
Secondly, what tire sizes were you all running?
what tire pressure are you supposed to run on the 275s? The book says for speeds above 1XX (i forget the number, 120?) to use a certain tire pressure, but I dont; where where the # is.
Cough, anyone?

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