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Compare Z06 dyno to ERay dyno (graph overlay)

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Old 03-10-2024, 12:40 PM
  #41  
d16dcoe45
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Originally Posted by 3LZR21U
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...
Just an FYI: F1 engines need to last 7 races.
Old 03-10-2024, 12:49 PM
  #42  
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Originally Posted by 3LZR21U
Lol, but based on your comparison, we already know what the real-world seems to keep saying. that below 60mph, the ER is a runaway.
lol one test couldn’t even get them to run different times on a drag strip. Another showed the expected 0.1sec difference. They were all tests done about a year apart with corrected data.

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.
Old 03-10-2024, 12:55 PM
  #43  
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Originally Posted by 3LZR21U
Drag racing comparisons. Reviews of the press cars. Initial owners descriptions. TEXASRANGER has both a Z and an ER right now; I value his take on it.
The published times suggests that ER does not “walk away” from the Z06. And in great air the Z06 will be faster than the published specs, and the ER will only get 60-70% of the benefit of the great air. And above 150 the Z06 will walk away from the ER with a 175 HP and gearing advantage. Of course one should not be driving that fast on the street. Not even peak Quartermile speeds. At street speeds either will be more than quick enough for any traffic situation. I never found a normal driving situation on the street in my Z51 HTC where I thought I wish I was 0.3-0.4 seconds quicker to 60mph. There were more than a few times it was so quick to speed that I had to use the great brakes because I had over accelerated past my needed merging speed.

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Old 03-10-2024, 01:58 PM
  #44  
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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.


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Old 03-10-2024, 02:20 PM
  #45  
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Originally Posted by Racingswh
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.
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.

Last edited by imxz28; 03-10-2024 at 02:25 PM.
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Old 03-10-2024, 03:19 PM
  #46  
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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.
Old 03-10-2024, 03:22 PM
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Originally Posted by imxz28
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.
Of course I am going to use that much throttle and hit 60 MPH in a couple seconds in my neighborhood 25 MPH zone. Everyone does that don't they?

Get real, people.
Old 03-10-2024, 03:55 PM
  #48  
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Originally Posted by AzDave47
Of course I am going to use that much throttle and hit 60 MPH in a couple seconds in my neighborhood 25 MPH zone. Everyone does that don't they?
Get real, people.
You're right, the Z06 is not twitchy.... It has a very broad power band which is a significant ingredient in the makings of a track beast.
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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Old 03-10-2024, 04:35 PM
  #49  
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you need to scream like a banchee
Looking forward to that:-)
Old 03-10-2024, 06:46 PM
  #50  
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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.
Old 03-10-2024, 07:28 PM
  #51  
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Originally Posted by 3LZR21U
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.
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.
Old 03-10-2024, 07:53 PM
  #52  
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Originally Posted by EvanZR1
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.
Yeah, the big difference between the LT6 and an older laggy turbo car is that its not that the LT6 goes from gutless to full power all out once, but just a smooth, linear build up of power. Its not even a factor if you hit the gas in the right gear. I had my concerns about if I'd like the LT6 on the street, but its fine. Hit the gas at 4-5k RPM and it just screams and goes. From a standstill or low speed its fine since first gear is so short and the engine revs so fast.

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).
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Old 03-10-2024, 07:58 PM
  #53  
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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.


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Old 03-10-2024, 08:33 PM
  #54  
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Originally Posted by 123sugey
I would love to run someone’s E from a 20 or even a 30 roll. My bet is the Z will slowly pull away the entire time
ooph I think an eray will smoke a C8Z like that. Up to probably 130 or so.

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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Old 03-10-2024, 08:39 PM
  #55  
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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.
Old 03-10-2024, 09:09 PM
  #56  
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Originally Posted by Z06-MAN
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!
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.
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Old 03-10-2024, 09:26 PM
  #57  
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Originally Posted by 23/C8Z
ooph I think an eray will smoke a C8Z like that. Up to probably 130 or so.

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.
Car and Driver tested both cars 5-60mph and says they both did it in 3.1

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.

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Old 03-10-2024, 10:11 PM
  #58  
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Originally Posted by 23/C8Z
ooph I think an eray will smoke a C8Z like that. Up to probably 130 or so.

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.
C&D has the 5-60 of the C8 Z06w/07 at 3.1, non-Z07 HTC at 3.1, Eray at 3.1

The Z06 transitions to faster (and quicker) right around 100 MPH.
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Old 03-10-2024, 10:17 PM
  #59  
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Originally Posted by Z0HS1CK
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.
C8Z in the normal autoshift mode will pass in those conditions with ease. Just as an FYI on how the C8Z runs, At Ely NV last September my C8Z trapped in the mile at 172.5 MPH vs the C7 ZR1 at 174.0 MPH, and the C8Z hooked off the line so much better. REAL WORLD RESULTS. The Shelby Mustang GT500 (3rd overall) was 3 MPH slower.
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Old 03-10-2024, 10:23 PM
  #60  
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Originally Posted by 23/C8Z
ooph I think an eray will smoke a C8Z like that. Up to probably 130 or so.

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.
When the Z is at 6500 rpm’s in 1st gear along side a E … again… I’ll bet they will be close and the Z will start pulling ahead. I’m waiting on any takers on this.

The E has the better 0-60 or 60’ after that … the Z takes over


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