The 2016 Chevrolet Camaro SS has shown to be more powerful than the Chevrolet ratings would suggest, if we’re to believe this dyno test.
The general rule is to expect around 15 percent less power to the wheels than the official engine power ratings. Being that the 2016 Camaro officially pushes out 455 horsepower, the expectation is that there’s probably around 387 horsepower being sent to the rear wheels. However, as the testing revealed, that’s not the case.
The fellas at Hot Rod collected some data from a dynamometer. The results revealed 405.2 hp and 405.4 lb-ft, with power and torque increasing after each of the three pulls. Likely not by chance, the test echoes what’s been observed with the C7 Corvette Stingray. That LT1 V8Â seems to be quite the thing.
Comments
As common practice at GM.
You never see them get nabbed for over estimating HP like Ford did on the past Mustangs.
Good news. But I thought the horsepower ratings for Camaro are SAE certified, which prevents over / under estimating horsepower (?).
They are and the engines are not under rated. It’s a common misconception.
To insinuate that there is a flat percentage of power train loss is just silly. The engines make 455hp at the crank, + or – 1%
The truth is GM does underestimate the power.
They can still SAE them but still market a lower number. No one will complain if there is an extra few Horses under the hood but if you short change it all hell breaks loose. Think of GMs marketing as like a bakers dozen.
Case in point. when the fifth gen Camaro arrived the V6 was rated at just over 300 HP and then a few years later the HP jumped up to a higher rating. People checked the engine and no changes were made and Dyno numbers were the same. GM finally came out and stated they upped the stated HP in marketing but the truth was the HP was there all along.
If you look back and see here Ford Short Changed I believe it may have been a Cobra on some HP all hell broke loose for a while. Law suit ensued and bad publicity was all over for a while. It most likely was a honest error but one that they paid for in the end for taking the numbers too close to the edge.
As for driveline loss it can vary depending the driveline. The percentage loss is often just an estimated average outside a automaker as they hold the real numbers. You can get close but to be exact you really need to pull the engine and use a bench dyno like we have at work.
“The 2012 Chevrolet Camaro will feature 323 horsepower, or 11 more ponies than the 2011 model. But General Motors engineers didn’t accomplish this feat by adding direct injection or variable valve timing. In fact, the 2011 version of the 3.6-liter V6 already incorporated those high-tech engine components.
Instead, engineers were able to add extra power by allowing the high-tech mill to breathe better. To do this, intake airflow was improved by seven percent through extensive simulation and bench testing. As a result, power is up by 11 horsepower, while exhaust flow is improved by 10 percent.”
Source: http://www.autoblog.com/2011/05/17/heres-why-the-2012-camaro-v6-makes-11-more-horsepower/