Pontiac Firebird 1967-2002 Birds of a feather flock together

top speed?

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Old Nov 2, 2006 | 01:13 PM
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Default top speed?

does anyone kno the top speed in a 99 ls1. just something that people are always asking and im not sure of the exact number.
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Old Nov 2, 2006 | 01:45 PM
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160 for a Camaro SS
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Old Nov 2, 2006 | 02:25 PM
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Hell, I've had my formula up to 167 before and it was still pulling slowly. It felt like it had a good 170-172 in it.
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Old Nov 2, 2006 | 02:58 PM
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ya ive hit 150 in mine and it was def. still pulling good.
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Old Nov 2, 2006 | 04:00 PM
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What's the highest everyones's had it in 6th?
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Old Nov 2, 2006 | 04:12 PM
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6th would just slow you down, it doesn't pull all that well, it's meant for a cruising gear. I've had my H/C with 3:42's all the way up to ~160 in 4th. That was pulling all the way to 7000 though. I didn't want to risk going any faster. I don't know how fast it would do if I had put it in 5th
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Old Nov 2, 2006 | 04:45 PM
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The speedo doesn't read past 155, so why would you wanna go past that?
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Old Nov 2, 2006 | 04:47 PM
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Limiter with z rated tires is at 162mph supposedly.
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Old Nov 2, 2006 | 06:07 PM
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1,000,000,000 miles an hour.
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Old Nov 3, 2006 | 05:53 AM
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Originally Posted by lomaximumta


1,000,000,000 miles an hour.


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Old Nov 3, 2006 | 07:55 AM
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Originally Posted by Slow01TA
I've had my H/C with 3:42's all the way up to ~160 in 4th.

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Old Nov 3, 2006 | 08:01 AM
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1000000 Mph hahaha good one

Ive had my TA all the way up to and a little past the 155 mark in fifth and like everyone on here has said she still wanted to go faster.

I read a Motor Trend I believe in 2001, it was one of those final WS6 vs. SS vs. Cobra things, and they tested all of them up to their respective top speeds, and they said the WS6 kept pulling past 165, but they didnt have enough room to test it, the SS ran out of steam at 155ish dont remember, and the poor Cobra stopped going at 140, I still have the issue I just have to dig it out of my Motor Trend box in the garage if somebody needs a citation
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Old Nov 3, 2006 | 11:24 AM
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i wouldn't wanna go that fast unless I knew that the only person i was endangering was myself
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Old Nov 3, 2006 | 05:07 PM
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I've gone 155 and it was still pulling hard. Just let off cuz i lost my nerve when i saw approaching headlights. Thought it could have been a cop....
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Old Nov 3, 2006 | 07:32 PM
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I've buried the speedo in 4th gear in my car when it still had 3:42's.

Originally Posted by 98 T/A raptor
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Old Nov 4, 2006 | 12:33 AM
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THe speedo goes to 155 so how do you guys get 167? I have pegged it on a runway but I have no idea how fast that was 160ish...
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Old Nov 4, 2006 | 01:10 AM
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You can guesstimate if you look at your tach, and if you know all the gear ratios on your car and the tire diameter you can find it that way
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Old Nov 4, 2006 | 07:08 AM
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164 mph on the gps top of fifth
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Old Nov 4, 2006 | 03:18 PM
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The SS is 160 mph
The WS6 is 162 mph according to GM
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Old Nov 5, 2006 | 11:32 PM
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Originally Posted by Slow01TA
6th would just slow you down, it doesn't pull all that well, it's meant for a cruising gear. I've had my H/C with 3:42's all the way up to ~160 in 4th. That was pulling all the way to 7000 though. I didn't want to risk going any faster. I don't know how fast it would do if I had put it in 5th
Yeah I have an M6, realize it's meant for a cruising gear, and know how it pulls in that gear What I was wondering is if there is enough power (in a relatively stock engine) to push the car past say 150 or 160 in that gear because there is lots of RPMs left. I took mine up to 130 in 6th which took forever and I ran out of room, but I was only running at 3,000 rpm so there is plenty of rpms left which made me wonder how long the engine would continue to pull.
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