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Top speed on a bone stock LS1???

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Old 06-28-2008, 10:38 AM
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Ive had the speedo pegged in my car. full bolt ons here. it was still pulling good.
Old 06-28-2008, 12:04 PM
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I've never taken my car that far...unfortunately
Old 06-28-2008, 12:08 PM
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i read a article and it said that a stock 99 z28 w/o the speedlimiter top out at 176 the car was in i road race course back in 99
Old 11-30-2008, 07:24 PM
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I have hit the fuel cut off at the top end of third gear on my 2000 A4, and the speedo was peged out. this was with 2.73 rearend
Old 11-30-2008, 07:52 PM
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^^^ Hey man. I am 30 miles down 70 east from ya in in boring Ktown. Small world!! I go to Camerons some an Torreros occasianally.

A girl was talking junk to me about my car last week and I told her it would do 3 X the speed limit easy. I had my Magellan in the car and on the way home we decided to see. Results:
173.6 on the GPS.

At 155 on the speedo I was actually doing almost 158 according to the GPS. Maybe cause my tire size is a fraction of an inch bigger than stock.

Stock I was able to bury it also but it gets there MUCH faster now. It is fun after you slow down but I honestly don't think I will do it again. I WISH I had a video.

Last edited by SOMbitch; 12-06-2008 at 07:58 PM.
Old 11-30-2008, 07:58 PM
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hit 160 when i first got the car. just 2 bolt-ons
Old 11-30-2008, 08:01 PM
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Originally Posted by SOMbitch
^^^ Hey man. I am 30 miles down 70 east from ya in in boring Ktown. Small world!! I go to Camerons some an Torreros occasianally.

A girl was talking junk to me about my car last week and I told her it would do 3 X the speed limit easy. I had my Magellan in the car and on the way home we decided to see. Results:
173.6 on the GPS.

At 155 on the speedo I was actually doing almost 158 according to the GPS. Maybe cause my tire size is a fraction of an inch bigger than stock.

Stock I was able to bury it also but it gets there MUCH faster now. It is fun after you slow down but I honestly don't think I will do it again. I WISH I had a video.

You did 173 with your A4? Thats impressive!!!
Old 11-30-2008, 08:09 PM
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Hey are you guys trying to beat the land speed record in your cars or something? What's going on here.

I did 155 and got nervous when my steering wheel started to vibrate just a bit, and the trees became a blur when passing them...
Old 11-30-2008, 08:29 PM
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ive done 155 in my 01 a4 ws6, and that came easy
Old 12-05-2008, 02:56 PM
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Got a friend Nate that has a 2001 Z28 with the M6 and we are coming from Kennedale around 10pm on a Sunday. he let me drive and We hit 820 and merged on to 287 and I punched it and topped the car out at 150 ish. What a beautiful feeling! The car just glided as i pegged it to the floor. My boy Nate was scared off his *** and was screaming for me to slow down but he didn't know his cars potential till he let me drive it. He's still a rookie at hard shifting and top speed but with my help he will be a worthy opponent.
Old 12-05-2008, 03:01 PM
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Originally Posted by dgcustomz
Got a friend Nate that has a 2001 Z28 with the M6 and we are coming from Kennedale around 10pm on a Sunday. he let me drive and We hit 820 and merged on to 287 and I punched it and topped the car out at 150 ish. What a beautiful feeling! The car just glided as i pegged it to the floor. My boy Nate was scared off his *** and was screaming for me to slow down but he didn't know his cars potential till he let me drive it. He's still a rookie at hard shifting and top speed but with my help he will be a worthy opponent.
i always get scared driving up 820 at night. its like 2 lanes and long straight highway. i always see broken cars pulled over thinkin they're cops
Old 12-05-2008, 03:39 PM
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I hit 150 with my t-tops off in the firehawk, one of my binders flew open and papers began to violently slash at my face lol.
Old 12-05-2008, 04:28 PM
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YEAH! 820 Is full of cops. I don't know what it is but a feeling overcomes me and I slow down just in time. I then pass a cop and his radar gun. It's crazy!
Old 12-09-2008, 10:22 AM
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145 came pretty easy for me when i had LTs but it was nerve-racking
Old 12-09-2008, 10:42 AM
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Originally Posted by SOMbitch
^^^ Hey man. I am 30 miles down 70 east from ya in in boring Ktown. Small world!! I go to Camerons some an Torreros occasianally.

A girl was talking junk to me about my car last week and I told her it would do 3 X the speed limit easy. I had my Magellan in the car and on the way home we decided to see. Results:
173.6 on the GPS.

At 155 on the speedo I was actually doing almost 158 according to the GPS. Maybe cause my tire size is a fraction of an inch bigger than stock.

Stock I was able to bury it also but it gets there MUCH faster now. It is fun after you slow down but I honestly don't think I will do it again. I WISH I had a video.
At higher RPM's your speedo looses accuracy. I'm suprized it was that close, it should have been off by more.
Old 12-09-2008, 11:23 AM
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my 2000 t/a will hit 155 and keeps pulling happily
Old 12-09-2008, 11:28 AM
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When I had my 93 b4c Formula I hit 165+ according to gps on 2 separate occasions. I quite honestly scared the crap out of myself the second time, front end felt loose as could be. I can easily see an ls1 car doing the same speed with no issue though. I've only had my ls1 car up to about 150 and I'm probably not going to try for any faster. Top speed is just not as important anymore
Old 05-26-2019, 05:20 PM
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Originally Posted by cochran191
I say 175 is perfectly doable for a bone stock LS1, my 3.4L stock firebird did 145 gps, so I would say that 30 more mph with over 100 more HP is very doable.
35th z28. Only work was a lil on the heads and a cold air intake. 150 on the dash speeding ticket 175 shut the engine down at 185.
Old 05-29-2019, 07:07 PM
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Saw an article in one of the car magazines about a highway patrolman that had a stock 02 Z28 as his patrol car. He managed to get 162 mph out of the car.



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