This is a discussion on Top Speed within the LT1 forums, part of the Vehicle Specific category; I know a stock LS1 can top out at 163 in the M6. Curious what can the LT1 top out ...
11-19-2007, 10:41 AM #1
I know a stock LS1 can top out at 163 in the M6.
Curious what can the LT1 top out at in an M6?
11-19-2007, 11:06 AM #2
The fastest "legit" time i've ever came across was a top speed of 157-mph in an 1996 Z28 M6, tested by M/T.
11-19-2007, 01:35 PM #3
What do you mean by legit?
11-19-2007, 03:12 PM #4
11-19-2007, 05:49 PM #5
That sounds about right. I think the estimated top-speed from a source I cannot remember put it at 159mph.
11-19-2007, 06:01 PM #6
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what about top speed for an a4?
11-19-2007, 09:05 PM #7
11-19-2007, 10:21 PM #8
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09 EclipseGT 75 Chevy 4x4
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As fast as it can go, but try it down hill with a tail wind for best results.
11-20-2007, 09:16 AM #9
11-20-2007, 09:55 AM #10
you should be able to hit 155 in 5th in an lt1... 167 i thinkis the fastest ive seen on a stocker in 6th, just not enough room anywhere to let the horsies push faster... but techincally i think 6th at stock redline is like 216mph or something rediculous lol
11-28-2007, 02:01 PM #11
What is governor set at for ZR rated tires 155-160mph? mine came 245/50/ZR16's factory option
standard equipment is 235/55/R16 and governors set low
11-28-2007, 04:29 PM #12
i pegged it. on the interstate with 5 guys in it, yes 1 little guy was setting on the hump. coming back from a titty bar, at 3am. so give or take how much the factory speed-o is off and how far the peg is below 150.
11-29-2007, 06:52 AM #13
I was riding with a buddy a few years ago in his 96 Z28 convertable with an automatic trans. It's a bone stocker with stock tune, speed limiter and all,,,,and when he hit 155 mph it started cutting out. Which I believe is typical with the speed limiter.
I checked the speed limiter on my 02 SS camaro convertable that is also an automatic and it was also set at 155 mph in the stock tune. My 6 speed LT1 also has a factory speed limiter setting of 155 mph. Guess they are all capable whether auto or manual. But I have no desire to try.
11-29-2007, 06:50 PM #14
158 mph by GPS with a 1994 Z-28 A4 with 3.42 rear end. I was limited by drag.
11-29-2007, 07:33 PM #15
These are all about right, I've heard of bolt-on ones doing 160+, they just take a bit longer to get there than the LS1's
A friend of mine had his (later my) auto Z28 reading over 140 on the speedo and still pulling, it had 3.73's and was not corrected though, so I would guess 130ish...
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