WHich has a high top speed A4 or M6?
#21
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I had my old camaro which had 2.73s completely pegged and then some...it pulled the harddest from 70-100 and from 130+ (on 3 or 4 miles of clear road....just in case someone wants to ragg on me for speeding)
#23
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i have a4 i maxed my speed o out at 155 and kept going dont know how fast i was going it was fun tell the road got rough drafts of wind started chatcheing under my car scary i let of after that
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Originally Posted by MGorman
That doesn’t sound right. Even with 410 gears I can do almost 130 in 4th , and I can run out 5th gear to redline which is about 170.
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Originally Posted by oneBADDz
uhh, with 4.10s 4th redlines (5800) at 108 and 5th at 146
![Driving](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_driving3.gif)
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Originally Posted by SSsuperdave
I don't see how you pulled 170 outta yours unless your trans has diff gearing.
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Originally Posted by DVS99TRANS
So was yours at one point in time, but upgrading the valvetrain is a given if you want to increase RPM in a LS1. Not to be rude.
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Originally Posted by JerseyLS1TA
So you guys that have buried ur speedo..how stable was the car? I have had mine up to 130 and it seemed ok bc the road was smooth
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Yeah... I've had it up to that 162 mark a few times (with the original SS spoiler which may or may not add some downforce... I'm no expert). The first time it was straight the entire way and it seemed very stable. One of the last times, there were some very slight curves on the highway, and even riding the center of two freshly paved lanes, I was feeling a little scared. I definitely was wishing the car had been lowered at that point. Much more stable than a lot of other vehicles I've been in at high speeds, though.
Edit: Never do 120+ with the t-tops off... lol.
Edit: Never do 120+ with the t-tops off... lol.
Last edited by jmdale1984; 08-06-2007 at 10:06 PM. Reason: side note
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Originally Posted by will69camaro
My car on dyno did 151 in 4th gear. Might be the 6800 rev limit however. I've had it up to only 140 on the road, and 135 on a track. Lots of room left just dont feel comfortable going that fast on a public road...Too many variables.
William
William
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I have figured out the Math needed to calculate closer to what the top speed of an F-body is taking accoun the drag at the higher speeds (ignoring road resistance due to tire contact - considerable at higher speeds)
Here is what you need
- Dyno graph or #'s of your dyno in your top speed gear (not 4th gear)
- The speed at a given RPM from your Dyno run .
Using
Drag of 1995 TA (0.34)
Density of air at sea level at regular air temp 0.076474203 lbs/ft^3
Frontal Area of 1995 TA 22 ft^2
The Top Speed = Speed at RPM - Speed reduced by drag
The 0.01136 is 60/5280 to convert to MPH
The .57 is the Pressure, Area, drag multiplied and simplfied
Simplifying things out
Actual speed - speed on Dyno at RPM - Speed lost due to drag
So
Top speed (F-bodies) = Speed at RPM - [sqrt((2*D)/(0.57))*0.01136]
)
D = the Torque at the specific RPM
Best one can do without the 2 graphs from a dyno for a given Gear
Here is what you need
- Dyno graph or #'s of your dyno in your top speed gear (not 4th gear)
- The speed at a given RPM from your Dyno run .
Using
Drag of 1995 TA (0.34)
Density of air at sea level at regular air temp 0.076474203 lbs/ft^3
Frontal Area of 1995 TA 22 ft^2
The Top Speed = Speed at RPM - Speed reduced by drag
The 0.01136 is 60/5280 to convert to MPH
The .57 is the Pressure, Area, drag multiplied and simplfied
Simplifying things out
Actual speed - speed on Dyno at RPM - Speed lost due to drag
So
Top speed (F-bodies) = Speed at RPM - [sqrt((2*D)/(0.57))*0.01136]
)
D = the Torque at the specific RPM
Best one can do without the 2 graphs from a dyno for a given Gear
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Originally Posted by MGorman
I shift at 6700 rpm and I my rear tires are 26.7” tall which I did not originally take into account. I guess stock f-body tires are shorter and I didn’t know your rev limiters were set that low. ![Driving](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_driving3.gif)
![Driving](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_driving3.gif)
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Originally Posted by straight_pipe
who has been near wide open in a automatic? you also have to think about 2.73 and 3.23 gears