12.54@111 no cool down...bone stock automatic

[RonnieSVT]

Give me a break , compared to a 50 deg day and a sea level run ,the cars going to be 3 to 4 tenths quicker and the same for the mph! Does the car have 3000 miles yet? that could be worth a mph or 2 as well

With my math the car sould run 11.99@117 with a good driver on well preped track when the cars broken in. In 90 deg weather my old procharged z28 would lose almost half a second! Try pulling a intercooler off any forced induction car and see how well it runs!

There is nothing wrong with the zl1 give it time! A few runs one day means nothing!!!!!

No cool down on a 90 deg day? back to back runs? thats worth a couple mph also compared to someone iceing their intake for a couple hours between runs. The lower air pressure in the back tires it all adds up!

[SixGracing]

Originally Posted by speedmon

I think a ZR1 will run 10s bone stock with DRs
Published time for a CTS-V Coupe is 12.2

I would have thought GM would have wanted the Camaro, which has a sporty car legacy to land somewhere in between.

The owner concern should be ...... rapid price decay....like FB.
The CTS-V coupe, new for 2011 was MSRPd at $64K.....a year later you can pick em up for $50-52K....like a 25% drop.

Never happen! I love the ZL1 but this car will not run 10's by simply throwing DR's on it.

[SixGracing]

Originally Posted by Sweet Zness

No one expects 10's out the door, but I know people expected high 11's with good drivers and very low 12's on average.

Anyone here who drives a Mustang or SS can basically say they "could" drive a 12 second car. Problem is that for all the money and hype of the ZL1, who wants to get walked by a 5.0 with CAI and a tune? Or by a SS with tires and a tune. Its one thing to know you bought the ZL1 as a track superstar, but realistically let me see one ZL1 owner tell me they'd be cool with their 60K car getting walked by a 5.0 with so little as a tire mod and CAI or a tune.

Fact of the matter is that something just isn't adding up. People here obviously are passionate about the Camaro. Why would they not be upset if the uber-camaro seems to not be up to par? Did you as a GM loyalist not snicker at the Cobra power issues that Ford ended up with egg on their face over?

I agree with what you are saying about the cars price and getting beat by a 5.0 or and SS with minor mods, but the ZL1 is so much more car then just point A to pont B speed. It's a technology marvel. These cars have so many great things that the Mustangs and even the SS's don't have. So a ZL1 owner should never feel inferior to any of the mentioned cars. Like I said earlier, there are a few simple mods they are already releasing for these beastly cars that will without a doubt keep them well above any Mustang or SS, plus it's already known that the ZL1 is the best car pound for pound on the street..

[a_Username]

Originally Posted by SixGracing

It kills me how everyone expects the ZL1 to come out and run 10's stock. I have an SS and I've put about $10K into my car, no supercharger and it's running mid 12's. Mid to low 12's is very respectable. It's not like it's slow by any means. I wonder too if anyone who is bitching about these times has ever driven a 12 second car? It's GD fast! Just be happy the ZL1 is doing this stock. A few tweaks and the ZL1 is one bad mamma jamma.

My 12's are also being ran at a 5000'+ DA.

My hats off to the ZL1 for being an incredibly fast stock car..

That 5000+ DA is probably the only reason you'd be running mid 12s... you'd comfortably be in the 11s in normal air.

[Truck Norris]

Originally Posted by hairtrigger

I've said it before....580HP is good for 11.5 at 120 Minimum in any car at that weight that can hook. Something is wrong. Even with a bad 60' like this the MPH should be higher than 111

It's heat soaked so the ecm is pulling timing which drastically effects the mph. This was a common problem with Cobra's/Lightning's/GT500's and seems to be the case with the ZL1.

The aftermarket will soon come to the rescue just like it did back in 1999 when then first supercharged mod motors started to see their trap speeds drop as IAT's temps went up. It took Ford 12 years to finally address the problem with cooling upgrades and I don't think GM has done any LSA cooling upgrades since it was released back in 2009.

[sammyv]

Truck Norris, Thanks for saying it "Heat Soaked". Thats exactly what I was going to say!

[rpepka]

Why is it shifting at 5500 rpm? my L99 shifted at 6000?????

[a_Username]

Originally Posted by rpepka

Why is it shifting at 5500 rpm? my L99 shifted at 6000?????

The ZL1 should also be shifting at 6000.

Originally Posted by Truck Norris

It's heat soaked so the ecm is pulling timing which drastically effects the mph. This was a common problem with Cobra's/Lightning's/GT500's and seems to be the case with the ZL1.

The aftermarket will soon come to the rescue just like it did back in 1999 when then first supercharged mod motors started to see their trap speeds drop as IAT's temps went up. It took Ford 12 years to finally address the problem with cooling upgrades and I don't think GM has done any LSA cooling upgrades since it was released back in 2009.

That explains the MPH, but that doesn't explain it shifting at ~5500 RPM does it? It should be shifting at 6000 in sport.

[2012 IngotSilver 5.0]

Besides the possible shifting issue, kudos to everyone who noted it was 90 freaking degrees out and muggy!

The REAL question then is this: were there any SS's/5.0's racing when the OP was there, and if so what were THEY running?

And to recap, here is what the big 3 got testing the ZL1:

6 Sp Manual ZL1
MT - 12.1 @ 117 mph
C&D - 12.3 @ 119 mph
R&T - *12.9 @ 113.1 mph

*(testers stated outside temp was 45 deg and the cold weather was causing the ZL1 to have tons of traction problems)

There is no way a 100% bone stock SS/5.0 is gonna run low 12's. Not now, not ever. It ain't a happening thing.

So the ZL1 still rocks.

[newmoon]

Some of you other owners of new ZL1s get out there this weekend and show us how it's done, atleast this owner did bring his to the track!

[Stephen12ZL1]

everything was running slow including me. Yes, taking a little air out of a stock tire will help with traction vs stock tire pressure (35psi). I didn't air down much, just to 25 psi. I have no doubt the ECU was pulling timing due to high IATs and total heat soak. IMHO, this is about as slow as this car should run ever. 111mph is pathetic and I totally agree with most of the prior statements. I have lots of drag racing experience so this is definitely not my first rodeo either.

[jleews6]

There are so many factor's that go into making good passes at the track that you cant go of one car but still, it only takes about 430 to 440 hp to go 111 @4200 pounds.

[SGOS252382]

I do see an issue (this car if it's an isolated case - which we will see as the summer goes on).

My car traps 112 mph all day long in 90 degree air (DA+2000 ft). My car is a bolt ons Camaro SS making around 360 rwhp (actually a little less).

Warm air definitely slows a car down, but something else must be going on. A 90 degree day shouldn't have a ZL1 automatic trapping 111 mph.

I love the ZL1 (would love to own one), but I'd be a little bummed if my ZL1 only trapped 111 mph on a summer day at the track.

[Blue Menace]

New to the whole numbers game of trap speeds, 1/4 times, etc, I've been learning a lot over the past few months. What puzzles me is temperature. People are quick to point out hot temps and I recognize hot air equals less power. But then others point out cold weather as being bad for traction. So my question is: what is the window of opportunity for this car? It seems pretty narrow, and if so, what's the point of debating all these times if it requires such a small window of opportunity to reach said times?