Compare Z06 dyno to ERay dyno (graph overlay)
#41
Pro
There's a reason why F1 engines last 1 race and diesel engines last millions of miles. Sure, they're crafted very differently and serve drastically different purposes. It has to do with their RPM that they operate at.
The % of maximum that you operate something at has a direct correlation to its longevity. It isn't the only factor, to be certain; but it is a key one. If you build an engine to make 600hp and that is at 98% of maximum...said build will not last as long as the same thing being tuned to 75% of maximum. And by the same token, an engine that plays all day long at 12,000 RPM won't last as long as one that stays around 7000 rpm. Or in this case, 8000 rpm and 4000 rpm.
We are way, way WAY too new with the LT6 to be making durability judgment calls vs. the LT2. But I'm certain this also will hold true. Maybe the mean failure difference is only 50,000 miles. Maybe it's 150,000 miles. I'm sure it's there though, and I'm sure it favors the LT2--and one of the reasons is the RPMs you are compelled to use the LT6 at to enjoy it.
For me, I'm happy down low. Dedicated track time will be almost nonexistent...
The % of maximum that you operate something at has a direct correlation to its longevity. It isn't the only factor, to be certain; but it is a key one. If you build an engine to make 600hp and that is at 98% of maximum...said build will not last as long as the same thing being tuned to 75% of maximum. And by the same token, an engine that plays all day long at 12,000 RPM won't last as long as one that stays around 7000 rpm. Or in this case, 8000 rpm and 4000 rpm.
We are way, way WAY too new with the LT6 to be making durability judgment calls vs. the LT2. But I'm certain this also will hold true. Maybe the mean failure difference is only 50,000 miles. Maybe it's 150,000 miles. I'm sure it's there though, and I'm sure it favors the LT2--and one of the reasons is the RPMs you are compelled to use the LT6 at to enjoy it.
For me, I'm happy down low. Dedicated track time will be almost nonexistent...
#42
We haven’t seen anything worthwhile for a real world test yet. I don’t even care which is faster, just want to see some real side by side comparisons and not some year apart race or what someone says it “feels like.”
Hopefully Edmund’s can do their U-Drag comparison with the cars soon.
#43
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123sugey (03-10-2024)
#44
Melting Slicks
In that run at VIR the Eray is a turd on the straights. 12 mph slower into T1 than the C8Z. If you were following an Eray in a C8Z you would think there was something wrong with the Eray.
From my perspective, the Eray is nearly as slow as I was in my 2003 Porsche 911, 21 years ago. Not only is it slow, you have to look down and fiddle with the knobby thingy down next to your right knee. Looks real safe.
From my perspective, the Eray is nearly as slow as I was in my 2003 Porsche 911, 21 years ago. Not only is it slow, you have to look down and fiddle with the knobby thingy down next to your right knee. Looks real safe.
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#45
Drifting
Thread Starter
In that run at VIR the Eray is a turd on the straights. 12 mph slower into T1 than the C8Z. If you were following an Eray in a C8Z you would think there was something wrong with the Eray.
From my perspective, the Eray is nearly as slow as I was in my 2003 Porsche 911, 21 years ago. Not only is it slow, you have to look down and fiddle with the knobby thingy down next to your right knee. Looks real safe.
From my perspective, the Eray is nearly as slow as I was in my 2003 Porsche 911, 21 years ago. Not only is it slow, you have to look down and fiddle with the knobby thingy down next to your right knee. Looks real safe.
I don't look at the ERay as a track weapon (however, GM seems to indicate its parking lot autocross is competitive).
Regardless, the ERay will be a pleasure to drive. Turn into the entrance to your neighborhood and give it 1/4 to 1/2 throttle and feel 95% of its furry.
Whereas in a Z06, you need to scream like a banchee to get 95% furry and **** off all the neighbors. I hate daily driving my Z06 in track and sometimes sport mode. All it wants to do is tootle down to the convenience store at 5k rpm. The Z does have nice torque at 3.5k which is on par with the SR making DD pleasurable.
Everyone wants to compare WOT and TRACK performance. I think daily driving is where most ERay owners will find pleasure.
Don't get me wrong. I'm and ex motocross racer and crotch rocket hooligan at heart and love the song my Z sing in the upper range. It's just that I can also appreciate the manners of a torque monster for DD.
Last edited by imxz28; 03-10-2024 at 02:25 PM.
#46
Race Director
Using torque at the crank, the Z06 has a peak of 460#-ft, but is over 400#-ft over a 5100 RPM range, whereas the LT2 is only over 400#-ft for 4100 RPM. Certainly the ERay has more down low, so the LT6 engine is not as "peaky" as people want to think it is.
#47
Race Director
Yep... That ERay needs a couple more kilowatt hour to complete a full competitive lap at VIR.
I don't look at the ERay as a track weapon (however, GM seems to indicate its parking lot autocross is competitive).
Regardless, the ERay will be a pleasure to drive. Turn into the entrance to your neighborhood and give it 1/4 to 1/2 throttle and feel 95% of its furry.
Whereas in a Z06, you need to scream like a banchee to get 95% furry and **** off all the neighbors. I hate daily driving my Z06 in track and sometimes sport mode. All it wants to do is tootle down to the convenience store at 5k rpm. The Z does have nice torque at 3.5k which is on par with the SR making DD pleasurable.
Everyone wants to compare WOT and TRACK performance. I think daily driving is where most ERay owners will find pleasure.
Don't get me wrong. I'm and ex motocross racer and crotch rocket hooligan at heart and love the song my Z sing in the upper range. It's just that I can also appreciate the manners of a torque monster for DD.
I don't look at the ERay as a track weapon (however, GM seems to indicate its parking lot autocross is competitive).
Regardless, the ERay will be a pleasure to drive. Turn into the entrance to your neighborhood and give it 1/4 to 1/2 throttle and feel 95% of its furry.
Whereas in a Z06, you need to scream like a banchee to get 95% furry and **** off all the neighbors. I hate daily driving my Z06 in track and sometimes sport mode. All it wants to do is tootle down to the convenience store at 5k rpm. The Z does have nice torque at 3.5k which is on par with the SR making DD pleasurable.
Everyone wants to compare WOT and TRACK performance. I think daily driving is where most ERay owners will find pleasure.
Don't get me wrong. I'm and ex motocross racer and crotch rocket hooligan at heart and love the song my Z sing in the upper range. It's just that I can also appreciate the manners of a torque monster for DD.
Get real, people.
#48
Drifting
Thread Starter
I don't terrorize quite neighborhoods. Please replace neighborhood with boulevard. The point was that the ERay gives its max SOP feel between 2k-4k that is more intense than the Z06 max pull range from 3500-8500. Neither is better - just different.
.
DD manners is NOT about WOT and/or race like RPM! When tootling down the boulevard at 1700rpm and you want a blood rush to the back of your head acceleration, you don't need anywhere near WOT to make it happen. The Z06 can't do that as well without calling everyone's attention within 1/4 mile radius. My argument was never about racing nor was it about first/second gear launching.
Last edited by imxz28; 03-10-2024 at 04:34 PM.
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3LZR21U (03-10-2024)
#49
Racer
you need to scream like a banchee
#50
In some respects, the Z reminds me of an old-school 90's tuner turbo car. Where it was pretty anemic down low, and once you got above 4000 rpm, it just became a monster. Another example would be the RS200 (Jay Leno did a vid recently on it). That's kind of the take I'm getting on the Z.
#51
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#52
To some degree, yeah,it kind of reminds me of my 88 944 Turbo S, no power down low, but once the turbo spooled, it was like a semi ran into your rear doing twice your speed. Not exactly the same with the C8Z, but it gives it more character, which is something a lot of modern cars lack.
Oddly enough, I was out driving my Z06 early and thinking about the E-Ray dyno a bit. It reminds me of some of the smaller Ford Ecoboost dynos. The tiny turbo spools up really fast, so you get max torque pretty much right away, but it starts tapering off right away. This bothered some people with those little engines as they would pull hard (for what they were) then kind of fall on their face. The E-Ray has a similar thing going on... but its putting out such big numbers that its not like the car is falling on its face or anything. I don't mean this as a criticism to the E-Ray, just an observation. Seems like the electric motor is basically a "torque fill" for down low, then they taper it off as the V8 really comes alive.
Both of these cars are pretty cool. I really like how the C8 variants are so different from each other. The instant torque down low from the E-Ray will definitely make it an animal in normal day to day driving (like just passing other cars and stuff like that.. probably pretty effortless).
#53
I had some time so I took the data I calculated last night and added the Stingray to it. Then made it a pretty little chart.
I'm still not claiming 100% perfect accuracy here (would be a lot easier with the raw data and not just trying to eyeball it from a dyno chart), but it should be reasonably close to illustrate the differences in the torque each variant is putting to the pavement from 10-100mph.
I'm still not claiming 100% perfect accuracy here (would be a lot easier with the raw data and not just trying to eyeball it from a dyno chart), but it should be reasonably close to illustrate the differences in the torque each variant is putting to the pavement from 10-100mph.
#54
Race Director
That instant power from the motors?
I bet you the 5 to 60 in the eray is .5 faster than the C8Z maybe even more.
I don't think the C8Z wins a roll race unless it's to 140 150mph.
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3LZR21U (03-10-2024)
#55
I think the power taper on the ER is late enough in the RPM band and already high enough power--that I don't think most will really feel it's lacking.
I am eagerly awaiting Hennessey or someone getting their hands on it. H700 package on an ER sounds pretty god-tier.
I am eagerly awaiting Hennessey or someone getting their hands on it. H700 package on an ER sounds pretty god-tier.
#56
I have both C8Z and C7Z, I can tell you they are very similar is pulling power. C7Z off idle has stump pulling torque, however C8Z catches right up and its basically neck and neck all the way up over 100MPH. Last year my buddy and me played with rolling starts, all different roll-on speeds while driving to Carlisle PA. It came down to who got the jump that stayed ahead otherwise the Z's went nose to nose. Neither car could pull the other away. Both cars are 100% stock and well broken in. Both are super fun to drive and have incredible performance. On a track C8Z wins over C7Z because of its mid-engine characteristics around turns and overall better balance. Just my 2 cents!
But let's say someone is in tour in the C8Z and wants to make a quick pass around a slow driver, the car would have to downshift repeatedly to engage in an rpm relative to the current speed needed to pass that car properly. If the car is in auto, you would have to mash that throttle while experiencing lag.
If you're in the C7Z at that same scenario, the engine makes enough torque where you don't need to downshift. Whether you have the A8 or the M7. I can literally pass people with ease in 4th gear at 35-40mph. There is no way i can do that with the C8Z. At least the torque output/gearing doesn't allow that without lugging the engine.
Sometimes in real world driving, you don't have to, or need to engage "race mode" when wanting to pass people or get up to speed. A torquey engine like the LT2 (or previous corvettes of the past) would handle those situations just fine.
Whereas something like the LT6, you absolutely have to adjust your driving and understand the behavior of the engine to make it react properly.
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#57
But tests like that are always corrected data and done like a year apart, so who knows. I'm skeptical of that result for sure.
I think at lower speeds, where AWD and torque are pretty much king, the E-Ray will have a nice advantage. I think in a roll race starting at about 40-50mph.. that advantage will be so small that the weight difference will probably have the biggest impact on the winner (at least up to reasonable speeds, before the E-Rays electric motor bows out of the race)
But either way.. I want to see real world results and not speculation, so would the youtubers finally get some videos going lol someone has to have access to both cars by now.
#58
Race Director
The Z06 transitions to faster (and quicker) right around 100 MPH.
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123sugey (03-10-2024)
#59
Race Director
I also have both the C8Z and C7Z and i still believe my C7Z "feels" faster but i think that's the torque that's giving me the illusion, or maybe it's the truth who knows. Then again i do have an xpipe, intake and PTB on the C7Z.
But let's say someone is in tour in the C8Z and wants to make a quick pass around a slow driver, the car would have to downshift repeatedly to engage in an rpm relative to the current speed needed to pass that car properly. If the car is in auto, you would have to mash that throttle while experiencing lag.
If you're in the C7Z at that same scenario, the engine makes enough torque where you don't need to downshift. Whether you have the A8 or the M7. I can literally pass people with ease in 4th gear at 35-40mph. There is no way i can do that with the C8Z. At least the torque output/gearing doesn't allow that without lugging the engine.
Sometimes in real world driving, you don't have to, or need to engage "race mode" when wanting to pass people or get up to speed. A torquey engine like the LT2 (or previous corvettes of the past) would handle those situations just fine.
Whereas something like the LT6, you absolutely have to adjust your driving and understand the behavior of the engine to make it react properly.
But let's say someone is in tour in the C8Z and wants to make a quick pass around a slow driver, the car would have to downshift repeatedly to engage in an rpm relative to the current speed needed to pass that car properly. If the car is in auto, you would have to mash that throttle while experiencing lag.
If you're in the C7Z at that same scenario, the engine makes enough torque where you don't need to downshift. Whether you have the A8 or the M7. I can literally pass people with ease in 4th gear at 35-40mph. There is no way i can do that with the C8Z. At least the torque output/gearing doesn't allow that without lugging the engine.
Sometimes in real world driving, you don't have to, or need to engage "race mode" when wanting to pass people or get up to speed. A torquey engine like the LT2 (or previous corvettes of the past) would handle those situations just fine.
Whereas something like the LT6, you absolutely have to adjust your driving and understand the behavior of the engine to make it react properly.
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Car Junkie 24 (03-11-2024)
#60
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The E has the better 0-60 or 60’ after that … the Z takes over