C7 Z06 doesnt feel fast....
12-20-2018, 07:53 PM
#41
Le Mans Master
thats for turbos relies on engine rpm. Supercharger gives the hit down low. The lt4 is a stump puller feels strong like a dump truck down low. Seems to be best shifting in the 5k to 5500 rpm maybe 5800 rpm. Anything more rpm Then that your pulling your pud.
12-20-2018, 08:28 PM
#42
Le Mans Master
12-20-2018, 11:34 PM
#43
12-20-2018, 11:41 PM
#44
Le Mans Master
12-21-2018, 05:32 AM
#45
I traded in a 2006 C6 Z06 M6 for a used 2015 C7 Z06 3LZ M7 a few months ago. On the C7 Z06, traction control is obvious, as the tires will spin for 1/4 to 1/2 second before the traction control stops them from spinning. On the 2006 C6 Z06, traction control didn't work, a message would appear on the dash indicating traction control enabled, but the tires would spin the same as if the traction control was not enabled. I read that the C6 Z06 M6 traction control wasn't fixed until 2009 or 2010 models.
Back to the C7 Z06, once the traction control is engaged, the car accelerates very well. Both the C6 and C7 Z06's are often traction limited in 1st gear, but I was running Nitto NT05's on the C6 Z06, and it's possible that they had more grip than the 2 year old MP SS that came with the used C7 Z06 I bought. The NT05's were able to hold with a first gear roll on to full throttle if it was warm and the tires were warm. I plan to buy a new set of MP SS tires, and I'll find out if they grip better than the 2 year old ones I have now.
What I don't know is the weight transfer of a C6 Z06 versus a C7 Z06, a combination of how low the center of mass is, and the suspension, and which ends up transferring more weight to the rear tires. If the grip level and weight transfer is about the same, then 0 to 60 mph will be about the same in both cars. Redline in 1st on the C6 Z06 is 60 mph, on the C7 Z06, 65 mph, not much difference there. Once in 2nd gear, the C7 Z06, should start pulling on the C6 Z06, but on a side by side pull, the C7 Z06 probably won't get more than a car length ahead until around 80 mph.
As pointed out in a few posts, you also get acclimated to the acceleration. I also own a 2001 Suzuki Hayabusa, like having 900 hp in a C7 Z06 and it's not traction limited (wheelie limited instead), 1st gear redlines at 81 mph and pulls harder, lifting the front end at around 45 mph if at full throttle, and I've acclimated to that, although the rider position on a bike (leaned forward and higher up) reduces the sense of acceleration and speed compared to a car. In the Z06, (or any car) you feel the acceleration more, and being lower, there is more of a sense of speed.
Back to the C7 Z06, once the traction control is engaged, the car accelerates very well. Both the C6 and C7 Z06's are often traction limited in 1st gear, but I was running Nitto NT05's on the C6 Z06, and it's possible that they had more grip than the 2 year old MP SS that came with the used C7 Z06 I bought. The NT05's were able to hold with a first gear roll on to full throttle if it was warm and the tires were warm. I plan to buy a new set of MP SS tires, and I'll find out if they grip better than the 2 year old ones I have now.
What I don't know is the weight transfer of a C6 Z06 versus a C7 Z06, a combination of how low the center of mass is, and the suspension, and which ends up transferring more weight to the rear tires. If the grip level and weight transfer is about the same, then 0 to 60 mph will be about the same in both cars. Redline in 1st on the C6 Z06 is 60 mph, on the C7 Z06, 65 mph, not much difference there. Once in 2nd gear, the C7 Z06, should start pulling on the C6 Z06, but on a side by side pull, the C7 Z06 probably won't get more than a car length ahead until around 80 mph.
As pointed out in a few posts, you also get acclimated to the acceleration. I also own a 2001 Suzuki Hayabusa, like having 900 hp in a C7 Z06 and it's not traction limited (wheelie limited instead), 1st gear redlines at 81 mph and pulls harder, lifting the front end at around 45 mph if at full throttle, and I've acclimated to that, although the rider position on a bike (leaned forward and higher up) reduces the sense of acceleration and speed compared to a car. In the Z06, (or any car) you feel the acceleration more, and being lower, there is more of a sense of speed.
Last edited by rcgldr; 12-21-2018 at 02:56 PM.
12-21-2018, 10:17 AM
#47
Le Mans Master
As I found out not paying attention to the speedo and getting a speeding violation for the first time in 18 years. Man, the Trooper cut me a BIG break.😁
12-21-2018, 01:52 PM
#48
Race Director
Member Since: Nov 2000
Location: CA
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2017 C5 of the Year Finalist
St. Jude Donor '08
Hey everyone,
(2015 Z06 w/ Z07. Its has a lower 15% pulley, intake, headers, xpipe, and tune).
The situation I am most focused on with this thread is determining why my C7Z doesn't feel faster then my previous stock C6Z. My previous C6 would push me back in my seat in a very brutal way. My C7 doesn't, even with 200 extra HP. Is this due to the E-dif? Or something alone those lines? The C7 still gets to about 120mph as quick as the C6, but it doesn't feel as aggressive at all. Can anyone shed some light on what I am missing here?
(2015 Z06 w/ Z07. Its has a lower 15% pulley, intake, headers, xpipe, and tune).
The situation I am most focused on with this thread is determining why my C7Z doesn't feel faster then my previous stock C6Z. My previous C6 would push me back in my seat in a very brutal way. My C7 doesn't, even with 200 extra HP. Is this due to the E-dif? Or something alone those lines? The C7 still gets to about 120mph as quick as the C6, but it doesn't feel as aggressive at all. Can anyone shed some light on what I am missing here?
I’m going to chime in here and forgive me since I haven’t read everybody else’s response, if there’s a little redundancy in my answer…
The first thing I’ll say is that the C7 is obviously supercharged and you have raised the torque with the pulley, but also increased the potential drop off as well in the upper Rpm band.
By this I mean once you get out of peak torque and shift to each successive gear, you’re not getting back into peak torque, maybe this Is part of your issue. The C6 being in an NA car, continues to build horse power and drop back into the power band each time your shift.
I will also say having just come down the mountain in my full bolt on C7, even though I own a 1000 hp supercharged C5, this C7 still feels really fast to me, in fact I had a ball coming down the hill, that’s all I have to say…
Last edited by jbsblownc5; 12-21-2018 at 04:22 PM.
12-29-2018, 05:16 PM
#50
Race Director
Lol. There's no "if" involved.
12-29-2018, 06:30 PM
#51
Advanced
Accerlation feeling.
i can get down with what the OP is saying. My 2019 Z FEELS slower than my hellcat. FEELS being the keyword! In the hellcat it feels brutal the Z06 is freaking incredibly smooth and effortless compared to the hellcat. The truth is while it FEELS slower my Z06 just blows the doors off my hellcat.
The following users liked this post:
Snap_zo6 (12-29-2018)
12-29-2018, 06:33 PM
#52
i can get down with what the OP is saying. My 2019 Z FEELS slower than my hellcat. FEELS being the keyword! In the hellcat it feels brutal the Z06 is freaking incredibly smooth and effortless compared to the hellcat. The truth is while it FEELS slower my Z06 just blows the doors off my hellcat.
But off a roll, i get him every time. Actually i won't say i destroy him but i do beat him significantly.
12-29-2018, 07:08 PM
#53
Le Mans Master
12-29-2018, 09:48 PM
#54
Burning Brakes
I went from a C6Z06 six speed to the C7Z06 A8. The C7 is scary fast in my opinion. I do miss the Six speed and really wish they offered it in the C7. I drove a 7M and thought 1st gear was way too low and then the difficulty of finding the right gear was the topper. Perhaps the short 1st gear is what is throwing your feeling off. Try starting in 2nd and see if it feels better.
12-29-2018, 09:50 PM
#55
Burning Brakes
12-29-2018, 09:59 PM
#56
LS7 was a good engine. Comparing it to a LT4 isn’t fair to that old gem. If your stock C7z is running like a Stock c6z you’re either running 87 octane or hot lapping the car in 80-90 degree weather. A modded C7z not running like a stock c6z is some serious troll alert. Not addressing cooling mods or not having a good tune on a torque based ecm could also be a culprit.
Only thing that should be appealing about an LS7 is its bore. The heads are a poor design and have valve guide problems even after they are fixed. An LS3 is superior hands down.
LT4 heating problems can be addressed easily if you do your homework and order a few parts.
Only thing that should be appealing about an LS7 is its bore. The heads are a poor design and have valve guide problems even after they are fixed. An LS3 is superior hands down.
LT4 heating problems can be addressed easily if you do your homework and order a few parts.
Last edited by CamOnlyJabroni; 12-29-2018 at 10:06 PM.
12-29-2018, 10:35 PM
#57
Burning Brakes
There is a lot of intercooler problems on the lt4. Keeping the air purged also bricks collapsing and so on. In 2017 models they enlarged the intake box for larger bricks but air in the system is worse with no bleeds high enough to purge unless you set the car on its back bumper. After market has tanks to enlarge the capacity U-tube has a fellow that puts a 1 inch ID plastic extension several inches long on the fill and jumps the pump feed at the fuse box to run and purge the system while over full in the extension. This is the biggest reason for the performance difference noted by the thread starter
12-29-2018, 10:49 PM
#58
Burning Brakes
There is also a thread on here that shows the system when the pump cavitates it gets hot and shuts down for protection 3 mins,,, and there corrective action they have tried.
12-29-2018, 11:01 PM
#59
Burning Brakes
Hey everyone,
(2015 Z06 w/ Z07. Its has a lower 15% pulley, intake, headers, xpipe, and tune).
The situation I am most focused on with this thread is determining why my C7Z doesn't feel faster then my previous stock C6Z. My previous C6 would push me back in my seat in a very brutal way. My C7 doesn't, even with 200 extra HP. Is this due to the E-dif? Or something alone those lines? The C7 still gets to about 120mph as quick as the C6, but it doesn't feel as aggressive at all. Can anyone shed some light on what I am missing here?
(2015 Z06 w/ Z07. Its has a lower 15% pulley, intake, headers, xpipe, and tune).
The situation I am most focused on with this thread is determining why my C7Z doesn't feel faster then my previous stock C6Z. My previous C6 would push me back in my seat in a very brutal way. My C7 doesn't, even with 200 extra HP. Is this due to the E-dif? Or something alone those lines? The C7 still gets to about 120mph as quick as the C6, but it doesn't feel as aggressive at all. Can anyone shed some light on what I am missing here?
12-29-2018, 11:05 PM
#60
Race Director
Put the car back to stock.,,although it could be something else. Go to a dealer or a used car dealer and test drive a stock m7 car.
then youll know
good luck...
then youll know
good luck...
