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Old 10-16-2013, 03:01 PM   #1
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Z28 vs ZL1

Nurburgring,

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Old 07-04-2015, 06:18 PM   #2
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I just saw this video. It puts the Z28 lap next to the ZL1 lap. You can see the speeds, rpm, Gs, etc... of the cars side by side. It's really interesting to see the speeds the Z28 is going at different parts of the track vs the ZL1... a car that's also has world class handling. I think Chevy knocked it out of the park with this one.

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Old 07-06-2015, 09:58 PM   #3
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I just saw this video. It puts the Z28 lap next to the ZL1 lap. You can see the speeds, rpm, Gs, etc... of the cars side by side. It's really interesting to see the speeds the Z28 is going at different parts of the track vs the ZL1... a car that's also has world class handling. I think Chevy knocked it out of the park with this one.

Yes, they did. The Z/28 is phenomenal car!!!! Notice how planted the Z/28 is and how the camera is bobbing around in the ZL1.

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So the Z28 beats the ZL1 by 3.8 seconds!!
That not much for 20K in cost difference.
Maybe some different tires would close the gap.
I bought the ZL1 for the extra creature comforts!
Are you trying to justify your purchase?

BTW, the 3.8 second gap would've been larger had it not started raining on the Z/28's run. Not a matter of opinion, more of a matter of fact. The video speaks for itself. FWIW, most aren't buying Z/28's for 20k difference from a ZL1. Also, tires only will not make the difference between the two.
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Old 07-06-2015, 10:09 PM   #4
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3.8 seconds on a road course like that I believe is huge. The ZL1 gives 300 lbs to the Z/28, but the Z/28 is built for courses like this and really not a street/daily driver.

If the ZL1 gave up the creature comforts it would close the gap -- but I'd bet it would certainly need some suspension upgrades to get there.

If I bought a Z/28, it would be mostly for track and I'd leave it untouched/unchanged -- too valuable just the way it is.

Z/28 is an awesome car.

ZL1 is a different animal/purpose.

Same with the 1LE...

Love them all!

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Old 07-06-2015, 10:24 PM   #5
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3.8 seconds on a road course like that I believe is huge. The ZL1 gives 300 lbs to the Z/28, but the Z/28 is built for courses like this and really not a street/daily driver.

If the ZL1 gave up the creature comforts it would close the gap -- but I'd bet it would certainly need some suspension upgrades to get there.

If I bought a Z/28, it would be mostly for track and I'd leave it untouched/unchanged -- too valuable just the way it is.

Z/28 is an awesome car.

ZL1 is a different animal/purpose.

Same with the 1LE...

Love them all!

-Don
Gotta disagree with the statement in bold. It's a great street car also. I speak from experience. It's just as streetable as the ZL1 is. The main difference is the ride is more firm (not harsh) and the tires like to throw things.
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Old 07-10-2015, 08:44 PM   #6
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I'd like to see them both cammed out on the track together.
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Old 07-10-2015, 10:23 PM   #7
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The ZL1 at the ring on the same treadwear rated tires would easily be 10 seconds faster than the recorded time.... easily. At a real track like Laguna or etc the Z/28 is going to smoke it. Either way there both kick ass.
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Old 07-11-2015, 12:24 AM   #8
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Gotta disagree with the statement in bold. It's a great street car also. I speak from experience. It's just as streetable as the ZL1 is. The main difference is the ride is more firm (not harsh) and the tires like to throw things.
That's fine, no problem, but comparing the ZL1 vs Z/28, the ZL1 has the creature comforts and that is what I was referring to from a daily driver perspective.

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Old 07-11-2015, 12:29 AM   #9
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I'd say a car 300 lbs heavier with only 80 more horses and $20,000 lower price tag being so close to the Z28 a track specific car only show's how good the ZL1 is. I love mine and I'll keep til I die LOL!
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Old 07-21-2015, 10:08 PM   #10
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Yes, they did. The Z/28 is phenomenal car!!!! Notice how planted the Z/28 is and how the camera is bobbing around in the ZL1.



Are you trying to justify your purchase?

BTW, the 3.8 second gap would've been larger had it not started raining on the Z/28's run. Not a matter of opinion, more of a matter of fact. The video speaks for itself. FWIW, most aren't buying Z/28's for 20k difference from a ZL1. Also, tires only will not make the difference between the two.

You're kidding right? Same tires would make a huge difference. If you put zl1 tires (same size) on the z28, it won't get close to that time.

You Throw 4k into the zl1 and you easily make up for the time diff and more.

Just my opinion.
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Old 07-21-2015, 10:34 PM   #11
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Here we go again...(eyes roll), there is a reason there is no MRC in the Z28....hint it is no where near as fast on the track. It lacks the feedback that the spool valve or monotube (1le) has and It does not talk to you at the limit like the other 2 do. I have done 300-400 laps in one and was never comfortable with controlling the car with just the throttle at the limit. In the 1LE I can slide the car from rumble strip to rumble strip and stop it at the edge of disaster instantly....Don't try that in a ZL1....My shop full of track wrecked cars (zl1's) proves my point.
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Old 07-22-2015, 10:04 AM   #12
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Originally Posted by Shark72 View Post
So the Z28 beats the ZL1 by 3.8 seconds!!
That not much for 20K in cost difference.
Maybe some different tires would close the gap.
I bought the ZL1 for the extra creature comforts!
I think people should think less of lap times, and more on what the car is.

Take a 911 turbo s and 911 GT3. the turbo will put down the same time as the GT3 or better in some case. but the experience you get from both are is different. They feel different even if the times are the same.

my point is that the Z/28 FEELS different. I would take the Z/28 on the tack any day over a ZL1 even if the times were the same.
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Old 07-22-2015, 10:15 AM   #13
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Here we go again...(eyes roll), there is a reason there is no MRC in the Z28....hint it is no where near as fast on the track. It lacks the feedback that the spool valve or monotube (1le) has and It does not talk to you at the limit like the other 2 do. I have done 300-400 laps in one and was never comfortable with controlling the car with just the throttle at the limit. In the 1LE I can slide the car from rumble strip to rumble strip and stop it at the edge of disaster instantly....Don't try that in a ZL1....My shop full of track wrecked cars (zl1's) proves my point.
Corvette ZR1, Ferrari, Audi even Shelby GT350 use mag shocks can't be all that bad.

Magnetic suspension is described as the fastest reacting suspension in the world as sensors monitor the road surface up to 1000 times per second and an ECU can make variations within a few milliseconds resulting in the possibility of multiple damping variations being made in a second.
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Old 07-22-2015, 10:21 AM   #14
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So the Z28 beats the ZL1 by 3.8 seconds!!
That not much for 20K in cost difference.
Maybe some different tires would close the gap.
I bought the ZL1 for the extra creature comforts!
Someone seems a little sensitive.

If you watch the video, the ZL1 is up to 10 seconds behind the Z/28 until the rain hits. Even then, the only time the ZL1 gains ground is on the long straight towards the end were it should be faster.
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Old 07-22-2015, 10:57 AM   #15
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Someone seems a little sensitive.

If you watch the video, the ZL1 is up to 10 seconds behind the Z/28 until the rain hits. Even then, the only time the ZL1 gains ground is on the long straight towards the end were it should be faster.
No not sensitive don't take it the wrong way, I think the Z/28 is an awesome car, I would love to add it to my collection. Just the 20K difference and creature comforts was my intended justification for my purchase.

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Old 07-26-2015, 11:34 AM   #16
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No not sensitive don't take it the wrong way, I think the Z/28 is an awesome car, I would love to add it to my collection. Just the 20K difference and creature comforts was my intended justification for my purchase.

Exactly

Is three seconds worth 20k?

These discussions are kinda pointless. Everyone who owns a zl1 will say zl1 better. And everyone who owns z28 will say z28 better.

It's personal preference.

I test drove both multiple times. I got the zl1 bc I found significant more value given the price I paid. That isn't wrong or right. Justy buying decision. Can a z28 beat a zl1 in a track stock for stock? Yes it can. I don't buy the "rain hit and it is slowe" z28 story. Let's be honest? If gm thought they can get another 3 seconds quicker they would have ran again. I just don't buy the story "would have been ten seconds faster if..." Again that is just MY OPINION. doesn't mean it's right. Doesn't mean it's wrong. There is simply so much you can do with a zl1 to get faster times than a z28 for just a few k. I think the z28 is an absolutely amazing machine. If it cost less than the zl1 I may be all over it.
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Old 07-26-2015, 12:18 PM   #17
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Does the Z28 use the same ABS & Stabilitrac of the SS?
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Old 07-26-2015, 07:15 PM   #18
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Corvette ZR1, Ferrari, Audi even Shelby GT350 use mag shocks can't be all that bad.
I did not say it was "bad", it just does not give feedback at the limit.....It is ALWAYS changing, as you say, every millisecond...so when you get at the limit, you will never know until your front and rear try to swap places, and in these cars, you do not want to be in that position. I now have close to 2000 laps in Camaros at Laguna Seca, so unless you have more experience at the limit than I do..............you are keyboard racing.
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Old 07-26-2015, 07:40 PM   #19
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I owned both cars. I tracked my ZL1 at both Barber and Road Atlanta but never had a chance to put the z/28 on a track. However, there is no doubt in my mind that the z/28 would have put down better times at the same tracks. The ZL1 is the better all-around performance option and the z/28 is the better track car. This is not debatable, IMHO.
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Old 07-26-2015, 07:46 PM   #20
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Both cars are amazing. I don't own either so no real dog in this race.

IMO the Z/28 is the best road course car made by an American company that you can buy. The ZL-1 is a crazy awesome machine that you can buy. What's the issue?

For a money race, with say Randy Pobst driving, I think the Z/28 will beat a ZL-1 even with even tires around a twisty track. I would bet money on it.
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Old 07-26-2015, 08:15 PM   #21
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I did not say it was "bad", it just does not give feedback at the limit.....It is ALWAYS changing, as you say, every millisecond...so when you get at the limit, you will never know until your front and rear try to swap places, and in these cars, you do not want to be in that position. I now have close to 2000 laps in Camaros at Laguna Seca, so unless you have more experience at the limit than I do..............you are keyboard racing.
backeddy, I am not questioning your experience.
I think the Z/28 is an awesome car, I would love to add it to my collection. Just the 20K difference and creature comforts was my justification for a ZL1.
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Old 07-26-2015, 08:56 PM   #22
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Nurburgring,




What the comparison shows to me is how stupid comparing lap times on the Ring is. A great track for chassis and suspension development, I now see why some manufacturers won't buy into the hype. Put both the ZL1 and the Z/28 on a track like Mosport, er Canadian Tire Motosports Park and I believe the gap would be much the same. So relatively larger.

Oh, and I'm sick of hearing the rain excuse for the Z/28. It ran on threaded tires, and it was a light shower. If they felt they could do much better they would have. The fact that the best time released was a wet run says that other dry ones weren't the drivers best.

While the ZL1, 1LE and Z/28 are/were impressive cars, I admit I was always confused by GM's thinking on this. Why the three? ZL1 was supposed to be the Z/28 originally, right? So what was the LE really? An attempt to correct what was wrong with the SS from the get go without admitting it? And the ZED was ultimately a correction of the 1LE? Just seems so odd to have the three so late in the life cycle, so close together. No Croatian of the engineering team at all as there's none to be made but management? Hopefully we get the Z/28 release of the new car right within the first year. With a much improved SS, not sure there's a need for a ZL1 anymore unless it follows the originals drag racing heritage.
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Old 07-26-2015, 09:00 PM   #23
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I think people should think less of lap times, and more on what the car is.



Take a 911 turbo s and 911 GT3. the turbo will put down the same time as the GT3 or better in some case. but the experience you get from both are is different. They feel different even if the times are the same.



my point is that the Z/28 FEELS different. I would take the Z/28 on the tack any day over a ZL1 even if the times were the same.

I get it. Thus I was happy with my Boss after the ZL1 came out. Still, as I always said had they come out in a different order I may have been happy with the ZL1. Or looking to replace it with the ZED? Who knows. But in waiting till everybody plays their hand before my next purchase.
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