Best way to launch the M7 Z06/Z07?
#21
The other thing about launching is to port the TB. Widely documented that these cars bog bad upon dumping the clutch. It makes a massive difference IMO, part of what you think is a bad launch is actually bad airflow.
#22
Team Owner
The C6 Z06 is much easier to launch being 300 pounds lighter and has a lower 1 st gear. Been there with 2 of each car!
#23
Le Mans Master
Never tried launch control or never will. Launch control videos aren’t very impressive and seem hard on the drive train on the manual trans cars. Automatics launch control seems to work well
Last edited by Mr. Gizmo; 03-16-2018 at 02:36 PM.
#24
Le Mans Master
Does the mode matter for 1/4 mile? I'd like to use Tour mode (TC off, Stabilitrack on) for the soft shocks, but will I get full power without being in Track/PTM? The manual mentions more power delivery based on PTM mode, but I'm not sure if they just mean "less nanny assistance" or do they truly mean more horsepower?
Coming from over 500 1/4 mile passes in three different manual C5s, I'm excited to start learning my new '15 M7 Z07.
Coming from over 500 1/4 mile passes in three different manual C5s, I'm excited to start learning my new '15 M7 Z07.
Forget power delivery and adjust mode for a slight change in suspension that can aid on the launch. You know the deal.
If you blowing stock tires off then put it in comfort.
If you are eating up the clutch on a big drag radial then consider track mode.
...And if you dare even think about launch control you'll never hear the end of it! lol
The clutch is stronger than in the c5 but the car is much heavier and makes more power so you can glaze it quite easily IME.
I only took 2 launches on a c7GS and managed to slightly glaze the clutch with a baby drag radial that most people think is too small to run.
#25
Drifting
I had the chance to try a couple of launches with launch control at lunch. It's actually quite nice. First time I did it, I just floored it all the way. Got a 3.9 0-60, which is a far cry from the claimed 3.2, but certainly better than i'd been doing on my own. Did it a second time feathering the gas a little once the launch control let go, and got it down to 3.7. Couple more attempts and I was down to a 3.4. I'd say the launch control is pretty dang nice. I'll definitely be using it tomorrow!
#27
Drifting
Are you asking if the stock rear end can support the stock hp/torque?? Aside from the occasional lemon/fluke, manufacturers make their parts strong enough to support even more than stock power. They have to cover their asses on the warranties. You're not going to break anything on stock or even a little more than stock power until you're getting into 100k miles and then stuff is just starting to wear out.
#28
Tech Contributor
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Try a few runs using Track Race Mode without using Launch Mode. Try launching at about 2200 rpm, adding throttle and feathering the clutch as the tires start to grip. What is interesting when you do that is PTM will cut in a little and limit tire slip to some degree. It is sort of like launch mode but you don't have to floor the throttle at the start. I was getting excellent launches at an autocross using that technique. May or may not work at a drag strip but is worth a try. From the launch point to tires hooking sufficiently to go wide open the car traveled less than 100 ft. Low gear is geared a little high as I was seeing 65 to 67 mph on the straights without hitting the rev limiter in my PDR video. My C6Z would hit the limiter right at 61 mph.
Bill
Last edited by Bill Dearborn; 03-19-2018 at 10:56 AM.
#29
Drifting
Went to the track today, as I mentioned before. Had some pretty garbage launches. Best time was a 12.1 with a 125 trap speed. I missed 3rd pretty much EVERY time. To be fair, it was my first time at that track, first time at the track in that car, and haven't been to any track over a decade. Anyway, I was getting like 2.6 60 ft times. So bad. Definitely need to work on that launch. It didn't help that they didn't have a burn out trench, just sprayed water on the first few feet on the track. I'm running PSSs. I don't need to do a dang burnout, and they didn't leave room to drive around it, so I was launching with wet tires. Hopefully by the time I go next time, I'll have some PSC2s on there and I WILL do a burn out. I even dropped air pressure to 25psi and it didn't do anything for me. Oh well.
#30
Le Mans Master
Went to the track today, as I mentioned before. Had some pretty garbage launches. Best time was a 12.1 with a 125 trap speed. I missed 3rd pretty much EVERY time. To be fair, it was my first time at that track, first time at the track in that car, and haven't been to any track over a decade. Anyway, I was getting like 2.6 60 ft times. So bad. Definitely need to work on that launch. It didn't help that they didn't have a burn out trench, just sprayed water on the first few feet on the track. I'm running PSSs. I don't need to do a dang burnout, and they didn't leave room to drive around it, so I was launching with wet tires. Hopefully by the time I go next time, I'll have some PSC2s on there and I WILL do a burn out. I even dropped air pressure to 25psi and it didn't do anything for me. Oh well.
#32
Drifting
Not to start a flaming war or anything, but as someone who JUST did this today, I can say I experienced 0 bogging. My problem was "it's spinnin n***** it's spinnin n**** it's spinnin!" (chris rock reference).
#34
You can't drop the clutch on these cars on launch. You have to slip the clutch and feather the throttle. Finding the balance for a perfect launch is tough with the M7 but guys are getting 1.7s 60ft times and even 3s 0-60 times. Slip the clutch or you'll be spinning in a cloud of smoke...
Note this is assuming MPSS or cups.
Note this is assuming MPSS or cups.
Last edited by Cercone; 03-17-2018 at 08:34 PM.
#35
Drifting
You can't drop the clutch on these cars on launch. You have to slip the clutch and feather the throttle. Finding the balance for a perfect launch is tough with the M7 but guys are getting 1.7s 60ft times and even 3s 0-60 times. Slip the clutch or you'll be spinning in a cloud of smoke...
Note this is assuming MPSS or cups.
Note this is assuming MPSS or cups.
#36
Drifting
☝️This. It will be as fast and much more fun learning to feather the clutch & control the right pedal vs using lc. Takes a lot of practice, especially on no prep or the street. If you want to do a lot better you need a rear tire with some sidewall. Which means getting a set of smaller rims and dr or slicks for the rears. The cup2s aren’t bad though. Forget any other run flat. These cars are set up for road racing vs drags obviously. Pull the aero off while you're at it.
Last edited by Toddiesel; 03-17-2018 at 09:20 PM. Reason: fixing previous poster's grammar
#37
#38
Drifting
In theory, I see your point. However comma pause for effect where's the proof? I (just in my head) feel like it's HIGLY unlikely that aero would reduce your 1/4 mile (and most especially your 1/8 mile) times in the slightest. I could see it affecting top speed (for example maybe a non aeroed car could do 205 vs 195 on an aeroed car) but I just don't see downforce affecting your ET or trap speed. I've been wrong MANY times in my life and this may very well be one of them, but to quote the internet... "pics or shens"
#39
Racer
I tried Track/race mode Pushed the button 1 time just roasted the tires down the 1/4 mile track. Same track/race mode hit the button 2 times thinking everything is off could not do a burn out seemed to have Rev limiter or TC still on? 2016 Z06/Z07 M7 Sport the same. What am I doing wrong?
A question that often arises: How to best launch a manual gearbox Callaway Corvette or Camaro? Answer: Judiciously! Start at about 1500 RPM. That’s right, 1500! We’ve found that this is approximately the right rpm for a successful launch. Just try not to overpower the tires. Shift to 2nd a few tenths before you see the 6400 RPM point. For Corvette, shoot for a 1.6 second sixty-foot time.
Alternately, use Launch Control. The Launch Control function included in Camaro and Corvette traction management actually works fairly well for both stock and Callaway applications. It’s especially helpful for drivers without much experience with high horsepower vehicles. We have tested with Launch Control as part of our product development process to ensure that it functions as originally designed.
There are conditions that the Launch Control system cannot monitor, however, including tire temperature and condition, and road surface temperature and condition. When tires are cold, when the road surface is cold, or when the road surface or tires aren’t clean and dry, excessive wheel spin is more likely.
Follow the instructions provided in your Corvette or Camaro Owner’s Manual:
1) Double click the Traction Control button, you’ll see “Competitive Mode” displayed in the Driver’s Information Center (DIC).
2) Depress clutch pedal to floor.
3) Move shifter to first gear.
4) Depress accelerator pedal all the way to the floor, smoothly. Engine speed will hunt briefly and then stabilize at approx. 4200 RPM for Corvette, 3500 RPM for Camaro.
5) Keep accelerator pedal to floor and release the clutch rapidly but smoothly.
6) Hold on.
#40
Drifting
Best Launch?
1) Double click the Traction Control button, you’ll see “Competitive Mode” displayed in the Driver’s Information Center (DIC).
2) Depress clutch pedal to floor.
3) Move shifter to first gear.
4) Depress accelerator pedal all the way to the floor, smoothly. Engine speed will hunt briefly and then stabilize at approx. 4200 RPM for Corvette, 3500 RPM for Camaro.
5) Keep accelerator pedal to floor and release the clutch rapidly but smoothly.
6) Hold on.
1) Double click the Traction Control button, you’ll see “Competitive Mode” displayed in the Driver’s Information Center (DIC).
2) Depress clutch pedal to floor.
3) Move shifter to first gear.
4) Depress accelerator pedal all the way to the floor, smoothly. Engine speed will hunt briefly and then stabilize at approx. 4200 RPM for Corvette, 3500 RPM for Camaro.
5) Keep accelerator pedal to floor and release the clutch rapidly but smoothly.
6) Hold on.