Epic SRK B/S thread of 2019
10-21-2019, 11:14 AM
#4041
7 Second Club
10-21-2019, 11:45 AM
#4045
True but all SAE really does is ensures automakers don't over quote power really doesn't address under quoting it.
J1349® was updated last year to eliminate some ambiguities that allowed engine makers to cite power and torque ratings higher than the engine's actual capabilities.
J1349® was updated last year to eliminate some ambiguities that allowed engine makers to cite power and torque ratings higher than the engine's actual capabilities.
that statement doesn’t necessarily say they allow under rating either. They just arent addressing it in that statement
10-21-2019, 11:52 AM
#4046
from what I’ve read it’s very thorough. Verified to make within 1-2% of advertised power with 3rd party verification. Witnessed and verified by GM and SAE engineers. From what I have read it is very thorough and ensures a rating accuracy within 2%. Hi or low
that statement doesn’t necessarily say they allow under rating either. They just arent addressing it in that statement
that statement doesn’t necessarily say they allow under rating either. They just arent addressing it in that statement
10-21-2019, 12:04 PM
#4047
C7 Z51 460hp, 11.7 @ 119 with a 3.7 0-60
C8 Z51 495hp, 11.1 @ 123 with 2.8 0-60
most of it's performance advantage is from 0-60 over the C7. If it really made 558whp or whatever, it would trap another 5-7mph and run well into the 10's.
The following 2 users liked this post by kinglt-1:
Chris25 (10-21-2019), Mike Morris (10-21-2019)
10-21-2019, 01:13 PM
#4048
TECH Enthusiast
I had no idea the z51 cars were that quick. Almost makes me rethink getting a C7.
10-21-2019, 01:38 PM
#4049
It very well could but it's not going to make 160hp over then Advertised. Best case scenario it makes it's advertised to the wheels. Aside from that, it's performance of 11.1 @ 123 falls in line with it's advertised ratings vs it's performance to weight ratio.
C7 Z51 460hp, 11.7 @ 119 with a 3.7 0-60
C8 Z51 495hp, 11.1 @ 123 with 2.8 0-60
most of it's performance advantage is from 0-60 over the C7. If it really made 558whp or whatever, it would trap another 5-7mph and run well into the 10's.
C7 Z51 460hp, 11.7 @ 119 with a 3.7 0-60
C8 Z51 495hp, 11.1 @ 123 with 2.8 0-60
most of it's performance advantage is from 0-60 over the C7. If it really made 558whp or whatever, it would trap another 5-7mph and run well into the 10's.
10-21-2019, 05:56 PM
#4051
It very well could but it's not going to make 160hp over then Advertised. Best case scenario it makes it's advertised to the wheels. Aside from that, it's performance of 11.1 @ 123 falls in line with it's advertised ratings vs it's performance to weight ratio.
C7 Z51 460hp, 11.7 @ 119 with a 3.7 0-60
C8 Z51 495hp, 11.1 @ 123 with 2.8 0-60
most of it's performance advantage is from 0-60 over the C7. If it really made 558whp or whatever, it would trap another 5-7mph and run well into the 10's.
C7 Z51 460hp, 11.7 @ 119 with a 3.7 0-60
C8 Z51 495hp, 11.1 @ 123 with 2.8 0-60
most of it's performance advantage is from 0-60 over the C7. If it really made 558whp or whatever, it would trap another 5-7mph and run well into the 10's.
10-21-2019, 06:16 PM
#4052
Agreed! I am just saying that dyno numbers seem inflated for whatever reason. Guys on C6 tried telling me no way the C8 was going to run bottom 11's back when the only thing reported was the 0-60 time. I said if the C8 actually pulls off a 2.8 0-60 then it most certainly will...None the less, Crow was on the menu and grilled to perfection after Motor trend dropped the 1/4 times.
Last edited by kinglt-1; 10-21-2019 at 06:21 PM.
10-21-2019, 06:25 PM
#4053
3500lb curb. bolt-on 6th gens trap 122-123 with 470-480whp and weigh slightly more. It's called Automagic and the DCT takes it up another notch. 550whp H/C 6th gens trap 130+ full weight depending on the combo. Aisde from that the LT2 isn't making +150-160hp over a LT1 when the only main differences are Intake manifold and headers.
10-21-2019, 06:43 PM
#4054
The curb weight of the 3lt z51 they tested was 3650 lbs
thats only 50 lbs lighter than a base 1ss a8
its making very good use of 495 hp to trap 123 at over 3800 lb race weight
dct and mid engine efficiency my guess
when my car was 36xx raceweight at 480 rwhp I was trapping ~125 in good air
thats only 50 lbs lighter than a base 1ss a8
its making very good use of 495 hp to trap 123 at over 3800 lb race weight
dct and mid engine efficiency my guess
when my car was 36xx raceweight at 480 rwhp I was trapping ~125 in good air
Last edited by UltraZLS1; 10-21-2019 at 06:49 PM.
10-22-2019, 07:58 AM
#4055
10 Second Club
iTrader: (8)
I don't get why erryone thinks it should trap higher. 0-123 mph in 11.1 is pretty good. And right inline when i went 11.1@124.....except i was at the top of a gear. It could be in the middle if a gear and that would show slightly less mph.
On top of that gm is notorious for tm in every gear. That's a mph killer because it don't carry momentum from the upshift.....I've pointed this out several times in several vids on here, it'svery easy to see. Most never even tune it out because they just look at that dyno # instead of acceleration.
As far as the dyno goes.....it's a badass with gearing to back it and little to no drivetrain loss.
On top of that gm is notorious for tm in every gear. That's a mph killer because it don't carry momentum from the upshift.....I've pointed this out several times in several vids on here, it'svery easy to see. Most never even tune it out because they just look at that dyno # instead of acceleration.
As far as the dyno goes.....it's a badass with gearing to back it and little to no drivetrain loss.
10-22-2019, 09:34 AM
#4057
I don't get why erryone thinks it should trap higher. 0-123 mph in 11.1 is pretty good. And right inline when i went 11.1@124.....except i was at the top of a gear. It could be in the middle if a gear and that would show slightly less mph.
On top of that gm is notorious for tm in every gear. That's a mph killer because it don't carry momentum from the upshift.....I've pointed this out several times in several vids on here, it'svery easy to see. Most never even tune it out because they just look at that dyno # instead of acceleration.
As far as the dyno goes.....it's a badass with gearing to back it and little to no drivetrain loss.
On top of that gm is notorious for tm in every gear. That's a mph killer because it don't carry momentum from the upshift.....I've pointed this out several times in several vids on here, it'svery easy to see. Most never even tune it out because they just look at that dyno # instead of acceleration.
As far as the dyno goes.....it's a badass with gearing to back it and little to no drivetrain loss.
10-22-2019, 10:54 AM
#4059
Agreed...DCT and mid engine isn't going to make it Dyno 60whp higher then it's advertised numbers. A Mid engine DCT car should show roughly the same loss as a front engine manual car. I know on the BMW stuff(both front engine), the Manual cars still dyno higher then the DCT. That is because the DCT is a wet clutch system where a Manual car is dry.
https://www.bimmerboost.com/showthre...ion)-vs-Manual
The ZR1 took some time to crack with a Global A ECU architecture, the C8 is suppose to get Global B. I am guessing somebody will find a way but if it costs what the ZR1 does to unlock that is going to suck for sure.
https://www.bimmerboost.com/showthre...ion)-vs-Manual
The ZR1 took some time to crack with a Global A ECU architecture, the C8 is suppose to get Global B. I am guessing somebody will find a way but if it costs what the ZR1 does to unlock that is going to suck for sure.