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Old 10-18-2013, 04:50 PM   #29
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That comes with it standard.
The Option packages ADDs: A/C - Radio - 5 speakers (total of 6)(unconfirmed)
CONFIRMED by Mark a GM Engineer
Listen at 3:37
http://www.youtube.com/watch?feature...HMYT0TBY#t=219
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Old 10-18-2013, 04:59 PM   #30
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If you can afford the car you can afford to DD it.
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Old 10-18-2013, 05:18 PM   #31
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Stiff racing suspensions don't like city streets. Urban driving on average streets could do some serious damage if the streets have potholes or bucked joints. Racing suspension bends and is unforgiving.
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Old 10-18-2013, 06:45 PM   #32
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The suspension is going to be extremely stiff and unforgiving on any kind of surface that's not smooth. I've hit a few bumps on the Parkway in my 1LE that have hurt...I can only imagine what they'd feel like in a Z/28.
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Stiff racing suspensions don't like city streets. Urban driving on average streets could do some serious damage if the streets have potholes or bucked joints. Racing suspension bends and is unforgiving.
The Z/28 should ride quite well with the exotic DSSV struts. The Z/28 TEAM tuned the damping for low speed circuit to be more comfortable than you would expect. The high speed circuit is much more aggressive than the 1LE damping. The ultra light Z/28 wheels have passed the same pot hole, curb pounding in general abuse on public road way standards as all other GM wheels. The suspension arms are the same as the rest of the 5th Gen line. This is not a fragile or passenger abusive Camaro.

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To DD this car, one will have to swap wheels with something more streetable like the Zl1 or 1Le setup.
I would personally add more sidewall to the tires to help with the harsh road bumps...more like the SS setup.
Nooooooooooooo!

It won't be a Z/28 without 305/30/19. The Trofeo tires can be driven on the street within certain parameters, but will not last long. A new Z/28 owner can swap out the Trofeos with Bridgestone RE-11s. The RE-11s will deliver about the same tire life as the GYs on the 1LE and Zl1 and do quite well on track. The other option that would be my personal preference is to order a set of Frogline wheels for the track. Put the new Trofeos on the Forgelines and Bridgestone RE-11s on the OEM Z/28 wheels.

An SS style staggered wheel and tire setup will add understeer to a car that was designed to be neutral. It s no different than drawing a mustache on the Mona Lisa.

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The carbon ceramic brakes will last "forever" in a street only driven car, so that is of no concern.

Tires are only suitable for +40f use. And you already know they cost $550'ish each. With no burnouts or super aggressive street driving, the Trofeo's will last 5000-8000 street miles. Or approx 4-5 track days depending upon driver's driving style.
My guess is at race speeds the best you'll get out of a set of Trofoe tires is 75 laps. The Z/28 is a momentum track car like a SCCA Mazda Miata spec class race car. It is all about carrying speed through the corners. The only way to be fast on the straight is to be flying when you exit the corner. The data from the Ring show that to be accurate, even on a cool damp track or in full rain. When you are glued to the corners with aero down force and great setup in a substantial vehicle like the Z/28 tire life gets short fast. Almost as fast as the Z/28 corners.

I have driven my Camaro in Chicago, Detroit, Philly, NYC and through the rural areas of Pennsylvania on 305/30/19s with 10kg coils. Unlike the Z/28 my Camaro suspension replaced every OEM rubber bushing with urethane or steel jacketed urethane bushings with the exception of the front inner LCA. With 27mm front and 32mm rear sway bars every automotive engineer insisted the ride would be terrible. When I took them out in the car or let a few actually drive they were stunned. Ride quality is relative. Coming out of a 74 Caddy the ride quality would be shocking. For those that love to drive performance vehicles I think they will find the Z/28 a great daily driver with or without AC and stereo. The problem I have with cars this competent is speed is relative. Did I really just enter the expressway at 130 MPH? Nah. That would never happen.


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Old 10-18-2013, 08:18 PM   #33
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My guess is at race speeds the best you'll get out of a set of Trofoe tires is 75 laps. The Z/28 is a momentum track car like a SCCA Mazda Miata spec class race car. It is all about carrying speed through the corners. The only way to be fast on the straight is to be flying when you exit the corner. The data from the Ring show that to be accurate, even on a cool damp track or in full rain. When you are glued to the corners with aero down force and great setup in a substantial vehicle like the Z/28 tire life gets short fast. Almost as fast as the Z/28 corners.

I have driven my Camaro in Chicago, Detroit, Philly, NYC and through the rural areas of Pennsylvania on 305/30/19s with 10kg coils. Unlike the Z/28 my Camaro suspension replaced every OEM rubber bushing with urethane or steel jacketed urethane bushings with the exception of the front inner LCA. With 27mm front and 32mm rear sway bars every automotive engineer insisted the ride would be terrible. When I took them out in the car or let a few actually drive they were stunned. Ride quality is relative. Coming out of a 74 Caddy the ride quality would be shocking. For those that love to drive performance vehicles I think they will find the Z/28 a great daily driver with or without AC and stereo. The problem I have with cars this competent is speed is relative. Did I really just enter the expressway at 130 MPH? Nah. That would never happen.
Great looking car! Aggressive stance.

Thanks for the real-life perspective and bullet points. Treating it as a momentum car makes sense given the heft you are throwing around. You can't expect a fat girl to transition quickly (physics and all that good stuff). As well, trying to launch quickly from corners would suffer the same limitations (accelerating the mass). So I appreciate your comment because I hadn't really thought driving it like that.

It seems to me this car would also take well to really hammering rumblestrips/berms? The suspension looks to soak up some big berms that other cars would be thrown off balance by?

Urethane will be luxurious and I'm looking forward to it :-) I've suffered many miles road and track with full spherical-ended and metal bushed suspensions. My ears and ass hurt just thinking about it...lol. Didn't I read the Z/28 will have urethane bushes? Or did they just go with stiffer rubber ones?
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Old 10-18-2013, 08:32 PM   #34
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It would be interesting to know the difference in brake wear, over the 24-hour test, between the ZL1 and the Z/28...
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Old 10-18-2013, 08:37 PM   #35
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Great looking car! Aggressive stance.

Thanks for the real-life perspective and bullet points. Treating it as a momentum car makes sense given the heft you are throwing around. You can't expect a fat girl to transition quickly (physics and all that good stuff). As well, trying to launch quickly from corners would suffer the same limitations (accelerating the mass). So I appreciate your comment because I hadn't really thought driving it like that.

It seems to me this car would also take well to really hammering rumblestrips/berms? The suspension looks to soak up some big berms that other cars would be thrown off balance by?

Urethane will be luxurious and I'm looking forward to it :-) I've suffered many miles road and track with full spherical-ended and metal bushed suspensions. My ears and ass hurt just thinking about it...lol. Didn't I read the Z/28 will have urethane bushes? Or did they just go with stiffer rubber ones?
The Z/28 was designed to eat turtlebacks and remain composed.

Final specs have not been released, but from what I have seen on the mules the Z/28 leaves the factory with rubber bushings. I am guessing 1LE sub-frame bushings, but that s just a guess. The mules I have seen may not be a good representation of what they just ran at the Ring.

I laugh to myself every time i think - momentum car with a LS7 in it
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Old 10-18-2013, 09:48 PM   #36
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.. about the Z/28 not being a daily driver?

Granted, it doesn't have the creature comforts, etc. but is there a more serious reason why Chevy has stated this?

I can see this car as the weekend warrior, breaking it out on nice days, etc. even for those of us that don't have track related aspirations.
...it'll be about an inch and a fraction lower in ride heigth than the ZL1 which will cause a bit more of a clearance issue for bumps, rises, and driveways, and the front runners may be a bit much more to handle in a turning radius situation for the street, otherwise it's turn key and good to go!.
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Old 10-18-2013, 09:51 PM   #37
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It would be interesting to know the difference in brake wear, over the 24-hour test, between the ZL1 and the Z/28...
Pads would wear and be replaced pretty much same rate as with iron rotors. The original CC rotors would likely still be serviceable while the irons got replaced several times.

Bear in mind the primary benefits of the CC, after reduced rotating mass and unsprung weight are no warping and consistent pedal feel lap after lap (no fading). Also those calipers are Brembo's newer style, much more rigid than previous iterations which yields a very firm pedal and less pad taper (leading/trailing) as they wear. A rock hard brake pedal lap after lap is one of the best features of a "real" track car, confidence inspiring and every bit as enjoyable as a responsive engine.

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The Z/28 was designed to eat turtlebacks and remain composed.

I laugh to myself every time i think - momentum car with a LS7 in it
Turtlebacks- that is new one to me, funny!

Yeah, me too, read your post and thought Miata/momentum and Camaro and initial thought was "wha?"...haha. But I get it.
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Old 10-18-2013, 09:57 PM   #38
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...it'll be about an inch and a fraction lower in ride heigth than the ZL1 which will cause a bit more of a clearance issue for bumps, rises, and driveways, and the front runners may be a bit much more to handle in a turning radius situation for the street, otherwise it's turn key and good to go!.
Yea, that Z/28 splitter looks like it will definitely give you trouble because it looks like it sticks out far.
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Old 10-18-2013, 10:00 PM   #39
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Yea, that Z/28 splitter looks like it will definitely give you trouble because it looks like it sticks out far.
...thanks for reminding me, the front splitter is a parking barrier potential nightmare for the ride....
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Old 10-18-2013, 10:10 PM   #40
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Really, it comes down to this:

If you are true enthusiast, you could probably drive the Z/28 every day and love every minute of it having no complaints at all. (This is where I raise my hand...)

Now, if you are not a true car enthusiast who just likes the looks of the Z/28 but you're expecting the "around town ride" of a luxurious Cadillac, then your going to be disappointed.
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Old 10-18-2013, 10:18 PM   #41
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Really, it comes down to this:

If you are true enthusiast, you could probably drive the Z/28 every day and love every minute of it having no complaints at all. (This is where I raise my hand...)

Now, if you are not a true car enthusiast who just likes the looks of the Z/28 but you're expecting the "around town ride" of a luxurious Cadillac, then your going to be disappointed.
Mike,

Did you get to ride over any rough spots while you were at Milford?
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Old 10-18-2013, 10:19 PM   #42
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Really, it comes down to this:

If you are true enthusiast, you could probably drive the Z/28 every day and love every minute of it having no complaints at all. (This is where I raise my hand...)

Now, if you are not a true car enthusiast who just likes the looks of the Z/28 but you're expecting the "around town ride" of a luxurious Cadillac, then your going to be disappointed.
...and that I nominate the overstatement of the obvious award for the day!
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