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Thread: Top speed LS1
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03-12-2006, 09:50 AM #1
Top speed LS1
Has anyone tested their LS1's top speed? Most of us have seen pictures of people with their speedo tached out, but exactly how fast can the LS1's go??? I'd like to hear from someone who knows 1st-hand that got their top speed and how they did it. Also, list your mods, gears, and transmission.
Personally, I've hit 140 MPH on Rt. 1 in NJ, but didn't tach out. I just moved to CA and haven't found any opportunities yet, but anyone who lives or has been in northern NJ knows that there's not too many opportunities to attempt to tach out. I have a Z28 A4 3.43 gears and at the time I had a K&N FIPK. It's possible my car can reach over 155 MPH with the A4, as at 140 MPH I still had more power to use, but didn't feel safe continueing on the highway.
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03-12-2006, 10:31 AM #2
I want to say the top speed is around 162mph.
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03-12-2006, 12:17 PM #3
I had a 99 z28 after a rebuild and a few tunes with bolt on's i topped out and theres a formula calculator that when you type in your gear ratio and rpm it came out to around 186. Ill try and find the website again and post it.
J
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03-12-2006, 12:53 PM #4
It was no problem for my car to hit 145-and there was plenty more to go. I've seen a stock motor car with safety mods post a 171 or there abouts in one of those legal top speed runs on the highway. I would think the 6 speed cars would run faster than an automatic due to the steeper over drive ratio and less power loss throught the tranny,but I'm sure some will argue that.
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03-12-2006, 12:53 PM #5
186 thats crazy i did 135 last night with plenty more to go
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03-12-2006, 12:59 PM #6
I'm sure a 6-speed with a huge axle would get much higher numbers than an A4, but I was wandering if anyone actually tested this out, ex. using a GPS device or radar to calculate.
Sometimes I wander why the hell the V8 F-bodies have speedos at 150 MPH, and yet a Honda Accord has the speedo upto 150 too. That's a real slap in the face when somebody said my Camaro and an Accord should be topped out at the same speed, just cuz GM was way too conservative and Honda was way too dramatic.
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03-12-2006, 01:04 PM #7
Yes-what I was talking about was a timed sanctioned event where they were using GPS,radar,and the timers to calculated top speeds. I know this particular car had the stock rear end and ratio,with double overdrive you don't need to change the ratio.
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03-12-2006, 01:04 PM #8
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laser red- 1994 Mustang GT
Originally Posted by sunsetorangessLast edited by jrp; 03-12-2006 at 01:07 PM.
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03-12-2006, 02:18 PM #9Originally Posted by Capster78
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03-12-2006, 02:25 PM #10
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Custom Slate Blue- 99 B4C
Originally Posted by myk02k
Oh, and you'll hit 150 still pulling while they are stuggling to pull 115 out of their asses
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03-12-2006, 02:41 PM #11
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Taupe/Red- 2001 Trans Am Conv
1999 Police Camaro
A certified 158 MPH top end speed on a 1999 police package Camaro which I believe is basically a stock LS1. Just has heavy duty alternator, heavy duty everything basically.
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03-12-2006, 02:44 PM #12
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Custom Slate Blue- 99 B4C
Originally Posted by Wayah-bird
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03-12-2006, 02:54 PM #13
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Taupe/Red- 2001 Trans Am Conv
Originally Posted by z_driver1
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03-12-2006, 03:05 PM #14
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Custom Slate Blue- 99 B4C
Originally Posted by Wayah-bird
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03-12-2006, 04:02 PM #15Originally Posted by z_driver1
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03-12-2006, 04:31 PM #16
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Black & Brilliant Silver- 1999&1997 SL600 6.0 V12's
Originally Posted by jimbo98z
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03-12-2006, 05:21 PM #17
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Black on Black- 2000 Trans Am M6
Will a stock LS1 with no tune shut off? If so what speed do you have to reach before it will?
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03-12-2006, 05:24 PM #18
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Pewter Metallic- 2001 Trans Am WS.6
I remember reading a post about the top speed for a ws6 was 172 or something, with slightly lower for the camaro. I figured the camaro would be slightly faster due to better aerodynamics and slightly lower weight. But the thing i read said it was partially due to the ram-air. I think it was a post on here before the site went down and lost everything, it linked to some other site with the "proof" i believe. Was just an article taken from somewhere or something like that.
Anyone happen to remember this? It was the same thread that someone said there is a 160mph speed limiter on our cars.
I'll check to see if i might have saved a copy of that page. Its been over a year though so I may not have it.
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03-12-2006, 07:31 PM #19
I'm reasonably sure the speed limiter is set at 155, where the speedo stops, but the speedo isn't really that accurate, so it could turn out to be 160 on a GPS due to various un-anticipated issues
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03-13-2006, 12:34 PM #20
The speed governor on the M6 cars is 162.
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