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Old 05-04-2012, 10:45 AM   #1
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Thumbs up Chevrolet: Stock 2012 ZL1 Runs 11.93 Quarter Mile (Video)


Featured on Camaro5 HOMEPAGE


Camaro ZL1 Joins the 11-second Club

2012-05-04




DETROIT – The 2012 Chevrolet Camaro ZL1 is officially in the "11-second" club, as engineers recently turned an 11.93-second/116-mph quarter-mile elapsed time run in a showroom-stock Camaro ZL1 automatic. A Camaro ZL1 manual ran an 11.96-second ET at 117 mph.

Only a few other production vehicles can run the quarter-mile as quickly as the ZL1. Fewer yet can also run 0-60 in 4 seconds, reach a top speed of 184 mph and lap the famous Nürburgring in 7:41.27 – all with the street-legal, factory-issued components and no time-consuming equipment adjustments at the racetrack.

"The ZL1 is great at everything and we're very proud of that," said Tony Roma, Camaro ZL1 program engineering manager. "You can take it to the drag strip and run 11-second quarter-miles all day long. You can also take it to a road course, where it's balanced, handles well, and does exactly what you want – including lapping Virginia International Raceway's Grand Course in under three minutes – and yet the ZL1 is sophisticated enough to use as a daily driver. It's a supercar you can drive every day."

For perspective, the Camaro ZL1 is so quick that some drivers who experiment with "drag radial" tires or full racing slicks may find themselves going too quick for most NHRA-sanctioned racetracks, where a five-point roll bar is required for vehicles running 11.49 or quicker. The 11.93-second ET in a stock ZL1 tested by the engineers wore the factory-issued Goodyear Eagle F1 Supercar G:2 tires developed specifically for it, putting the car only a scant 0.44-second away from that additional racing safety requirement.

Tuned for the drag strip

The original, special-order 1969 Camaro ZL1s are still revered for their legendary performance on the drag strip and Chevrolet was keenly aware that customers for the new, 21st century edition would undoubtedly test its straight-line mettle in quarter-mile increments.

The Camaro team re-engineered 30 percent of a Camaro 2SS to make the ZL1, including special modifications just for the drag strip.

"We know many of customers will take their ZL1 to the drag strip," said Gordon Rojewski, driveline development engineer – and who is also an experienced drag racer and owner of a turbocharged, 920-horsepower street car. "Some may just go once, to experience the full potential of the 580-horsepower LSA engine. Others may be more serious, going every other weekend with a set of slicks in the trunk. As such, we set out to make sure the ZL1 would perform for them – on the first pass and on the 100th."

For example, to withstand the heavy loads of repeated hard launches, the ZL1 features a stout 9.9-inch rear differential mounted in a robust cast iron center section. It also features a standard differential cooler that can lower the temperature by 100 degrees F for improved performance and longevity.

The ZL1 also features asymmetrical half-shafts: a 60mm hollow shaft on the right and a 33mm solid shaft on the left. The different torsional stiffness rates of the shafts work in conjunction with the limited-slip differential to minimize the chance of wheel hop at launch. Engineers modified the rear suspension, as well, to accommodate an 18-inch wheel, for owners who want to fit a set of drag-radials with taller sidewalls to improve their ETs.

Even the ZL1's exclusive Performance Traction Management (PTM) was tuned for the drag-strip. It integrates third-generation Magnetic Ride Control, launch control, traction control, electronic stability control and electric power steering response to enhance performance. Launch control (manual transmission only) automatically modulates engine torque for the best-possible acceleration without excessive wheel spin. When the driver pushes the throttle to the floor, the system holds a predetermined engine speed until the driver releases the clutch. Then, the system modulates engine torque 1,000 times per second to maximize the available traction.

Mode 5 of launch control is uniquely calibrated for drag strips that use VHT or similar traction-enhancing compounds on the starting line. In addition to validating the system for the stock tires, engineers also tested it with 18- and 20-inch racing-type drag radial tires in anticipation of the specialty tires many drivers will use at the track. Drag radials are very soft and provide nearly the traction of a full racing slick, allowing the car to launch at a higher rpm without wheel spin, which can translate into an even quicker ET.

Proven with 1,000 hard launch tests

To test the chassis and suspension components to ensure they were up to repeated hard-start launches typical at the drag strip, engineers subjected the ZL1 to the grueling "Woodward Avenue Schedule" at the GM Milford Proving Ground.

Named for the famous cruising route that cuts north through Detroit's suburbs and has been the venue for untold thousands of unofficial launch capability demonstrations since the 1960s, each test cycle is a hard-launch, standing-start drag race up to 100 mph. The ZL1 was subjected to 1,000 test cycles before its driveline was stamped "approved".

"The Woodward Avenue Schedule was a really brutal test, but it told us the Camaro ZL1 would live up to the way we knew our customers would drive it on the track," said Rojewski.

The Camaro ZL1 is on sale now with a suggested retail price of $54,995 – including a $900 destination charge. The 6L90 six-speed automatic transmission includes TapShift control and is a $1,185 option. The Camaro ZL1 convertible goes on sale this summer.
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Old 05-04-2012, 10:55 AM   #2
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Old 05-04-2012, 10:57 AM   #3
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Very cool.
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Old 05-04-2012, 11:05 AM   #4
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okay, I'm gonna be the bad guy here by saying what's the big deal about any ZL1 getting in to the 11s? it's a freakin' S/Ced 6.2L Camaro. there's no reason why any S/Ced SS shouldn't do 11s in the 1/4.

now show me a ZL1 in the 10's and then I'll be impressed.
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Old 05-04-2012, 11:13 AM   #5
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here we go with Drag Radials again.
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Old 05-04-2012, 11:14 AM   #6
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Video said they were running on DRs all day.. Why was my original post deleted anyways?

1:26 clearly shows them bolting up a tire and running with it, they even talk about it.. It would be nice to see a video and write up at 100% stock and no mention of tires as that's not 100% stock.. Doing it this way still throws in the times as suspect to being on tire as other sites state the 11s were all on tires.. Not OEM.
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Old 05-04-2012, 11:15 AM   #7
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How about some stock times. Stock means not DR
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Old 05-04-2012, 11:19 AM   #8
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Video embedded above.
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Old 05-04-2012, 11:21 AM   #9
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that's awesome. Hopefully it'll shut up the mustang fanboys for awhile.
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Old 05-04-2012, 11:23 AM   #10
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So did they run the 11.9 with DR's or stock tires. I'm confused.
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Old 05-04-2012, 11:26 AM   #11
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It was on DRs, and someone on THIS FORUM has already run 11.92 on DRs, so honestly, nobody should be shocked, surprised, whatever.
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Old 05-04-2012, 11:26 AM   #12
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To me it says that the run was with stock tires:

"The 11.93-second ET in a stock ZL1 tested by the engineers wore the factory-issued Goodyear Eagle F1 Supercar G:2 tires developed specifically for it, putting the car only a scant 0.44-second away from that additional racing safety requirement."
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Old 05-04-2012, 11:28 AM   #13
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Since someone deleted it..

I'll re-post.

http://www.lsxtv.com/news/video-gm-e...-drag-radials/


"The team took two new ZL1’s with them to the drag strip; both an automatic and a manual. At the track they bolted up a set of 18” Mickey Thompson drag radials on Z06 wheels to the silver automatic trans car, and a stet of 20” Nitto drag radials on stock ZL1 wheels to the red manual trans ZL1. Neither car disappointed with the extra grip, with both ZL1s blasting out a string of impressive high 11 second runs with no performance modifications beyond the tires."
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Old 05-04-2012, 11:28 AM   #14
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Quote:
Originally Posted by Sven59 View Post
Camaro ZL1 Joins the 11-second Club
2012-05-04


DETROIT – The 2012 Chevrolet Camaro ZL1 is officially in the "11-second" club, as engineers recently turned an 11.93-second/116-mph quarter-mile elapsed time run in a showroom-stock Camaro ZL1 automatic. A Camaro ZL1 manual ran an 11.96-second ET at 117 mph.

Only a few other production vehicles can run the quarter-mile as quickly as the ZL1. Fewer yet can also run 0-60 in 4 seconds, reach a top speed of 184 mph and lap the famous Nürburgring in 7:41.27 – all with the street-legal, factory-issued components and no time-consuming equipment adjustments at the racetrack.

"The ZL1 is great at everything and we're very proud of that," said Tony Roma, Camaro ZL1 program engineering manager. "You can take it to the drag strip and run 11-second quarter-miles all day long. You can also take it to a road course, where it's balanced, handles well, and does exactly what you want – including lapping Virginia International Raceway's Grand Course in under three minutes – and yet the ZL1 is sophisticated enough to use as a daily driver. It's a supercar you can drive every day."

For perspective, the Camaro ZL1 is so quick that some drivers who experiment with "drag radial" tires or full racing slicks may find themselves going too quick for most NHRA-sanctioned racetracks, where a five-point roll bar is required for vehicles running 11.49 or quicker. The 11.93-second ET in a stock ZL1 tested by the engineers wore the factory-issued Goodyear Eagle F1 Supercar G:2 tires developed specifically for it, putting the car only a scant 0.44-second away from that additional racing safety requirement.
'Nuff said...
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Old 05-04-2012, 11:29 AM   #15
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If you read the article it clearly states that both of the 11 second runs we're on factory tires. I'm kinda confused on the discrepancy between the article and the video. I would say the 11'a were in fact on stock rubber. I don't see an experienced driver with all day at the track not running high 11's. Bone stock
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Old 05-04-2012, 11:34 AM   #16
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Other articles clearly state 11s were on DRs.. Thus, the confusion.. You can't talk about running 11s OEM, then show putting on a tire, then at the very end talk about your times and then say 12s all day long in the middle... It's bad design on the video's message.
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Old 05-04-2012, 11:34 AM   #17
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They say it wore the stock tires but in the video it had drag radials.
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Old 05-04-2012, 11:35 AM   #18
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Best run of day 11.93
DR were used that day per vid
Not showroom stock.
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Old 05-04-2012, 11:35 AM   #19
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Hmmm....definately a discrepancy there. The video says DRs, and shows DRs. The write-up says factory Goodyears. Gee, lets thicken the plot a little bit, GM....nice. More internet fodder.
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Old 05-04-2012, 11:36 AM   #20
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Video shows otherwise on the claimed "showroom stock car". When was the last time a car was delivered from the factory to a dealer for sale to the public, wearing Drag Radials. I wonder if this is another GM scheme to downplay the "not as advertised" performance of the ZL1. Out with what happened in QC, it will shed light on why the car is not meeting the advertised stock performance. At this rate, on same mod, it is barely on par with existing GT500s.
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Old 05-04-2012, 11:36 AM   #21
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The times were based on stock tires, they just ran the drag tires to make sure there were no issues.

Quote:
Originally Posted by HumanWiki View Post
Video said they were running on DRs all day.. Why was my original post deleted anyways?

1:26 clearly shows them bolting up a tire and running with it, they even talk about it.. It would be nice to see a video and write up at 100% stock and no mention of tires as that's not 100% stock.. Doing it this way still throws in the times as suspect to being on tire as other sites state the 11s were all on tires.. Not OEM.
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Old 05-04-2012, 11:37 AM   #22
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PS....I have no problem believe the car can and will (or has) run high 11's on the stock rubber. Just not sure it did it here.
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Old 05-04-2012, 11:38 AM   #23
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Quote:
Originally Posted by Sven59 View Post
The times were based on stock tires, they just ran the drag tires to make sure there were no issues.
and the proof of that is? I'm obviously not the only one having issues with it.. See this thread and other articles. .I'm not knocking the car.. I just want to know the truth without all the confusion. The video and the message disagree and the video itself doesn't do a good job of pointing out different times on DRs over the OEM tires.. If they ran on DRs, then what were the DR times? Why not talk about that? I sure as hell would.. I'm running on 11s on OEM tire, but I guess at my DR times.. If I ran with DRs, I'd certainly post the difference between the two.
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Old 05-04-2012, 11:40 AM   #24
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Quote:
Originally Posted by Bob Cosby View Post
PS....I have no problem believe the car can and will (or has) run high 11's on the stock rubber. Just not sure it did it here.
Me too, how hard is it to go take a run on STOCK tires and make a vid. proving it?
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Old 05-04-2012, 11:44 AM   #25
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Quote:
Originally Posted by HumanWiki View Post
and the proof of that is? I'm obviously not the only one having issues with it.. See this thread and other articles. .I'm not knocking the car.. I just want to know the truth without all the confusion.
I would trust an article from GM media as GM were the ones that were there rather than an article from lsxtv.com that says otherwise. I don't see GM lying about it. Not saying lsxtv.com would either because they are a trusted source, but I can see a mistake being made. They may have assumed just like you are.

If anybody can find in GM's article where it says otherwise, there will be a reason for debate. Until then, I believe GM. I did not hear them say anywhere in the video that the 11.9s were on drag radials. They talked about running on DRs but did not give any times for them.
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