(Corvette Dyno) Let's hope the Camaro gets this before it's too late.

SnakeEyeSS · 10-21-2019, 02:23 PM

Lhttps://www.motortrend.com/news/2020...c8-power-dyno/

Ringer?

crankaholic · 10-21-2019, 02:36 PM

Quote:

Originally Posted by SnakeEyeSS

Ringer?

The 15% drivetrain loss number seems outdated even for front-engine cars with a torque converter these days - I would say a good mid-engine DCT combo is around 8%. So the 478WHP run translates to just under 520HP. Seems like the dyno is reading a bit high or something.

The other runs are harder to explain - except maybe they weren't taking the gear ratios into account correctly...

Umbriel · 10-21-2019, 02:42 PM

Dynos can be set to or read all over the place, that run where they got 478 or whatever is probably pretty close to a real world number on a high reading dyno.

DaveC113 · 10-21-2019, 03:28 PM

They explain that SAE test is gradual and runs hot, you get more power with a quicker dyno run.

However, I was pretty sure the hp would be 500+ at the wheels, it still takes hp to do sub 3s 0-60 and low 11s in the 1/4.

hotlap · 10-21-2019, 04:09 PM

Its a fanboy test. Don't believe it.

SnakeEyeSS · 10-21-2019, 04:31 PM

The whole article addresses everyone's comments so far(as DaveC knows)

Personally, Im hoping the old GM way of underrating V8s is back(like the 4th gen Z28, original 69 ZL1, the modern LSA)

I know what we need is the C8 run on a Dyno back to back with an established car, which Hennessey will probably do or provide comparable data.

Number 3 · 10-21-2019, 07:15 PM

GM has spent so much time and effort with SAE to develop the industry standard I don’t see them walking away from that.

What posible benefit would GM have for announcing 495 when it’s actually 520 or more? I can’t think of anything.

Petrol Head · 10-21-2019, 07:51 PM

Quote:

Originally Posted by SnakeEyeSS

The whole article addresses everyone's comments so far(as DaveC knows)

Personally, Im hoping the old GM way of underrating V8s is back(like the 4th gen Z28, original 69 ZL1, the modern LSA)

I know what we need is the C8 run on a Dyno back to back with an established car, which Hennessey will probably do or provide comparable data.

They're going back to the old SAE Gross rating system

z28pat · 10-21-2019, 08:00 PM

Dynos are so different one from the other that the real tell tale is the cars 0-60, 1/4 mile and 122 mph.

TJay74 · 10-21-2019, 08:02 PM

Quote:

Originally Posted by DaveC113

They explain that SAE test is gradual and runs hot, you get more power with a quicker dyno run.

However, I was pretty sure the hp would be 500+ at the wheels, it still takes hp to do sub 3s 0-60 and low 11s in the 1/4.

Yep all it takes is some simple math to be able to figure out how much power the car is making. Just need to know the track, the day, the 1/4 time and MPH and what the C8 weighed and most a math formula and you can figure out close to what HP is needed to run the time and MPH.

I think with anything else, it is a numbers game. Some numbers are needed to make the Corp bean counters and or Corp Atty happy, some are needed to make the EPA, NHTSA, and the .Gov happy, others are needed to make the insurance institute happy and lastly the customers.

Super fine line the manufacture has to walk to make everyone happy.

50MileSmile · 10-21-2019, 08:33 PM

The numbers can’t be real, and staff at Motor Trend knows something is wrong with the results. They have requested other C8s to test ASAP.

nicktechla · 10-21-2019, 08:36 PM

https://www.instagram.com/p/B35pm7Yge5g/

Scraps0f · 10-21-2019, 10:53 PM

Didn't the same authors do this with the new Supra and get the same style of high number?

Bhobbs · 10-21-2019, 11:00 PM

There's no way the LT2 is making as much horsepower as the LT4.

The issue I can see with the LT2 going in the SS is the intake manifold looks really tall. I'm not sure it can fit with the same setup. Maybe the dry sump will allow them to push it down far enough in the bay to clear the hood.

10-21-2019, 02:23 PM	#1
SnakeEyeSS Drives: Camaro 2SS & ZL1 Join Date: Mar 2018 Location: Oklahoma Posts: 857	(Corvette Dyno) Let's hope the Camaro gets this before it's too late. Lhttps://www.motortrend.com/news/2020...c8-power-dyno/ Ringer? __________________ 2017 Camaro 2SS A8 Bright Yellow NPP MRC 2023 Camaro ZL1 A10 Radiant Red

10-21-2019, 03:28 PM	#4
DaveC113 Drives: 2018 Camaro 1SS 1LE Join Date: Sep 2018 Location: Front Range, CO Posts: 1,865	They explain that SAE test is gradual and runs hot, you get more power with a quicker dyno run. However, I was pretty sure the hp would be 500+ at the wheels, it still takes hp to do sub 3s 0-60 and low 11s in the 1/4. __________________

10-21-2019, 04:09 PM	#5
hotlap Drives: 20 1LE 2SS M6 Rally Green Join Date: Mar 2014 Location: Franklin WI Posts: 6,632	Its a fanboy test. Don't believe it. __________________ "the trouble with our liberal friends is not that they're ignorant; it's just that they know so much that isn't so.” Ronald Reagan -

10-21-2019, 04:31 PM	#6
SnakeEyeSS Drives: Camaro 2SS & ZL1 Join Date: Mar 2018 Location: Oklahoma Posts: 857	The whole article addresses everyone's comments so far(as DaveC knows) Personally, Im hoping the old GM way of underrating V8s is back(like the 4th gen Z28, original 69 ZL1, the modern LSA) I know what we need is the C8 run on a Dyno back to back with an established car, which Hennessey will probably do or provide comparable data. __________________ 2017 Camaro 2SS A8 Bright Yellow NPP MRC 2023 Camaro ZL1 A10 Radiant Red Last edited by SnakeEyeSS; 10-21-2019 at 04:43 PM.

10-21-2019, 07:15 PM	#7
Number 3 Hail to the King baby! Drives: '19 XT4 2.0T & '22 VW Atlas 2.0T Join Date: Dec 2008 Location: Illinois Posts: 12,170 View My Garage	GM has spent so much time and effort with SAE to develop the industry standard I don’t see them walking away from that. What posible benefit would GM have for announcing 495 when it’s actually 520 or more? I can’t think of anything. __________________ "Speed, it seems to me, provides the one genuinely modern pleasure." - Aldous Huxley

10-21-2019, 02:42 PM	#3
Umbriel Drives: 2016 Camaro SS Join Date: Sep 2018 Location: Bartlett, TN Posts: 1,121	Dynos can be set to or read all over the place, that run where they got 478 or whatever is probably pretty close to a real world number on a high reading dyno.

10-21-2019, 08:00 PM	#9
z28pat Drives: 2002 z28, 2018 2ss 1LE Join Date: Sep 2012 Location: Parrish, Florida Posts: 835	Dynos are so different one from the other that the real tell tale is the cars 0-60, 1/4 mile and 122 mph.

10-21-2019, 08:33 PM	#11
50MileSmile Drives: 2023 2SS, 2018 1SS 1LE, 1993 Z/28 Join Date: Jun 2018 Location: Midwest Posts: 819	The numbers can’t be real, and staff at Motor Trend knows something is wrong with the results. They have requested other C8s to test ASAP.

10-21-2019, 08:36 PM	#12
nicktechla Drives: 2012 Porsche 911 Turbo S Join Date: Jan 2017 Location: Los Angeles, CA Posts: 1,776	https://www.instagram.com/p/B35pm7Yge5g/ __________________ IG: 2fast2nick -- Current -- 2012 Porsche Turbo S - PDK - Basalt Black Metallic -- Past -- 2017 Camaro ZL1 Coupe - Red Hot - A10, PDR - HRE P101 2015 Mustang GT PP - Whipple Supercharger

10-21-2019, 10:53 PM	#13
Scraps0f Drives: 2018 NGM ZL1 Join Date: Jul 2018 Location: Buffalo Posts: 145	Didn't the same authors do this with the new Supra and get the same style of high number?

10-21-2019, 11:00 PM	#14
Bhobbs Drives: 2015 SS 1LE Red Hot, 1970 Chevelle Join Date: Apr 2012 Location: Chino, CA Posts: 6,989	There's no way the LT2 is making as much horsepower as the LT4. The issue I can see with the LT2 going in the SS is the intake manifold looks really tall. I'm not sure it can fit with the same setup. Maybe the dry sump will allow them to push it down far enough in the bay to clear the hood. __________________

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