[Lyttle66]

How much HP is needed to attain 200 mph? Ready to mod the 6MT ZL1, but more interested in top speed, so I can check off bucket list item. Don't intend to go crazy on mods, but will do enough to achieve goal.

[FERRARI]

650 HP in a 10 speed coupe with a very slight tailwind or downgrade. Stock Zl1 has achieved 198 mph one way and slightly over 200 the other way.

[chicagosam]

Tailwind and a tire pressure gauge.

https://www.motorauthority.com/news/...med-at-198-mph

[chicagosam]

Darn it Ferrari you beat me by 2 seconds.

[kttxz06]

You need to ask yourself, do you have enough room to hit 200 mph. The car has the HP to do it.

[Can'tHave2MuchHP]

Originally Posted by kttxz06

You need to ask yourself, do you have enough room to hit 200 mph. The car has the HP to do it.

This was what I was going to write too. Where are you going to do it? Where do you have that kind of room? I mean, there's few places in the America you could do that legally. The most accessibly would be 1 mile events BUT you'll need a good deal of power to do it in a mile with a 3900 pound car. Now if you have 5 miles, it might do it stock with an A10. However the M6 ZL1s do have a pretty poor top speed gearing setup from what I've seen. Their top speed is in 5th gear at stock power level at around 173 MPH I think. If you were making a lot more power, it could twist 6th gear to 6000+ RPM.

Check this out:

[rjacobs]

To do it in a standing mile would take somewhere around 1300-1400hp would be my guess.

My buddy has an 09 ZR1 that hit 202 at the Texas Mile last spring and he is pushing close to 1000whp when he sprays it.

[kttxz06]

Originally Posted by Can'tHave2MuchHP

This was what I was going to write too. Where are you going to do it? Where do you have that kind of room? I mean, there's few places in the America you could do that legally. The most accessibly would be 1 mile events BUT you'll need a good deal of power to do it in a mile with a 3900 pound car. Now if you have 5 miles, it might do it stock with an A10. However the M6 ZL1s do have a pretty poor top speed gearing setup from what I've seen. Their top speed is in 5th gear at stock power level at around 173 MPH I think. If you were making a lot more power, it could twist 6th gear to 6000+ RPM.

Check this out:

Speed limited to 175? So, guess that answers the 200 mph question. I personally have ZERO need to go 200 mph. Well, if i was on a strip or wide open plain yea. Doing 130-140 on the streets already puts me on medication. I've hit 155 once back when my Zl1 was new, that was fast enough. But anyhow, I'm a wussie so.

[Mr. Wyndham]

This is why the 6th gear was replaced in the ZL1 1LE with something shorter. However, thanks to the shorter wheels/tires, and aero pieces it would need to be spinning at 6550rpms to be at 200mph, and it'd need more hp to get there.

In order to reach 200 mph in a standard M6 ZL1 you would need (I'm guessing) several hundred more hp...and a LOT of distance to achieve 200mph. 6th is geared for fuel economy, not top speed.

The A10 ZL1 is your tool for a top speed run.

[ReevZL1]

Originally Posted by kttxz06

Speed limited to 175? So, guess that answers the 200 mph question. I personally have ZERO need to go 200 mph. Well, if i was on a strip or wide open plain yea. Doing 130-140 on the streets already puts me on medication. I've hit 155 once back when my Zl1 was new, that was fast enough. But anyhow, I'm a wussie so.

I Love the honesty! Haha.

[drfeelgood]

Originally Posted by Can'tHave2MuchHP

This was what I was going to write too. Where are you going to do it? Where do you have that kind of room? I mean, there's few places in the America you could do that legally. The most accessibly would be 1 mile events BUT you'll need a good deal of power to do it in a mile with a 3900 pound car. Now if you have 5 miles, it might do it stock with an A10. However the M6 ZL1s do have a pretty poor top speed gearing setup from what I've seen. Their top speed is in 5th gear at stock power level at around 173 MPH I think. If you were making a lot more power, it could twist 6th gear to 6000+ RPM.

Check this out:

Wow, never realized the manuals were so... slow 😝

[MY 19 Z]

Great question:
No answer from me.
I will be heading to the Salt for My 200 MPH Hat in my 19 ZL1!
Would love to hear more on the subject.
Trans gearing
Tire size
HP
Keep the Dream Alive!

[FERRARI]

Hey “Chicagosam”, I can’t take credit for the 2 seconds - Its all about internet connection speed I think! Anyway, “Great minds think .....”

[MY 19 Z]

How about the guys that enjoy rowing there own gears.
M6
Don't want to offend, no Auto here.
Will it take another 100 HP in a 2 mile stretch?