New Camaro SS Dyno Pull 384.4 RWH

[THE EVIL TW1N]

Originally Posted by DGthe3

So, we now have 2 runs on 2 cars on 2 different dynos, with 20 hp difference? I would not be surprised if the third puts 374 to the ground.

I'm thinking they should be putting down 370-375rwhp stock.

[THE EVIL TW1N]

Originally Posted by Doc

I would think to get certified and the requirement is within 1% that would mean it can't be any less than 1% of the stated figure. So if you are stating your HP is 500 it can't be less than 495 to be certified. I know the original purpose was to protect consumers from being cheated by misrepresenting values as being higher than they actually were. But if they actually were higher than stated that's not cheating anybody; you're getting more for your money than you thought (or they stated) you were.

I've always interpreted certification as being a guarantee of an "at least" value; but that's just me.

If I can find the source, I'll post it. I know it's all over the Corvette forums. But the engine must make +-1% of the SAE Certified rated power to be Certified. And it is SAE that picks the HP level it's certified at, not GM.

[radz28]

Thanks for the info'. All of these numbers are pretty impressive if you ask me, though the more the better

[kopacko]

Originally Posted by THE EVIL TW1N

Also, another note. The LS3 is not underrated, its SAE Certified, it can't be underrated. It must make within +-1% of its rated power.

Underrated is the wrong term to use on this car. Given the headers, cats, and exhaust as well as the upper intake, I would say "restricted" is a better word. Change those out to high flow cats, etc and you will see an easy jump in HP for little to no $$

My Mach1 was the same way. Rated at 305 at the crank. I swapped the exhaust and intake and reprogrammed the air/fuel ratio and I have (at last dyno SAE corrected) 333rwhp.

[syr74]

Here is a brief rundown of SAE 'certified' specs as per an article in Motor Trend. If you want to be SAE 'certified' you do indeed have to post your hp ratings within -+1 percent of the SAE findings and then you have to guarantee that all production engines will produce within two percent either way of that power rating.

This isn't a secret, the new SAE certs are a known quantity by this juncture.

http://motortrend.automotive.com/364...gue/index.html

Very few new cars are seriously under-rated, as attested to by the fact that most manual transmission cars run on a DYnojet will correct to within a hair of their factory power ratings given an ~11% correction factor, which is pretty much the loss you can expect through a modern manual transmission.

[mike@newera]

You are going to find different dynos are going to show different numbers, especially different dyno manufacturers.

[SS 376]

365, 375, 385 whp. Doesn't matter! I'll take it. Where's my hammer?

[fdjizm]

i have a feeling the OP isnt coming back to offer anymore info lol... just expect 450+ hp camaros lol

[DeathChill]

It's neat to show those who swear by dyno's but useless for anything else. You don't win races on a dyno.

[MrGazinya]

Originally Posted by fdjizm

i have a feeling the OP isnt coming back to offer anymore info lol... just expect 450+ hp camaros lol

http://www.5thgen.org/forum/showthread.php?t=12930&page=3

[fdjizm]

Originally Posted by MrGazinya

http://www.5thgen.org/forum/showthre...t=12930&page=3

not seeing the clarification on the correction anywhere. maybe i missed it

btw if you dont run 12.8 at the track your dyno is way off i will wait till then to make my final call

trap speed should be a about 116-119mph?

[DeathChill]

Originally Posted by fdjizm

not seeing the clarification on the correction anywhere. maybe i missed it

btw if you dont run 12.8 at the track your dyno is way off i will wait till then to make my final call

trap speed should be a about 116-119mph?

I agree. I'm not saying the guy is a liar but no one's going to come out and say "Hey, we're probably a bit off."

Should be easy enough to prove at the track, no?

[Doc]

Originally Posted by syr74

Here is a brief rundown of SAE 'certified' specs as per an article in Motor Trend. If you want to be SAE 'certified' you do indeed have to post your hp ratings within -+1 percent of the SAE findings and then you have to guarantee that all production engines will produce within two percent either way of that power rating.

This isn't a secret, the new SAE certs are a known quantity by this juncture.

http://motortrend.automotive.com/364...gue/index.html

Very few new cars are seriously under-rated, as attested to by the fact that most manual transmission cars run on a DYnojet will correct to within a hair of their factory power ratings given an ~11% correction factor, which is pretty much the loss you can expect through a modern manual transmission.

Okay reading the article you linked to it has this part:

"The certified output must be within one percent of the dynamometer output. Of course, ringer engines could easily be slipped through this process, but by certifying an engine the manufacturer guarantees all production engines will produce within two percent of the rated output (Europe allows five-percent deviation)."

I put bold on the part in bold which says a ringer can be slipped through. It seems like two things are being talked about. On the one hand it looks like it IS saying every engine produced will be +/- 1% of rated output. Yet it talks about ringers slipping through which contradicts that, UNLESS what the certification is actually saying is all production engines WILL produce within 2% of the rated value AT LEAST. That is different than saying all production engines MUST produce exactly that rating; no more, no less. If that were the case "ringers" wouldn't be possible.

The way the article is worded it's not exactly clear whether the certification is guaranteeing all engines must be that rated value ONLY, or since they speak of ringers, it means all engines must produce NO LESS than within 2% of the certified value but more than that (a ringer) is possible.

Either way it's good to see such strong numbers being guaranteed as a minimum.

[TAG UR IT]

Not bad at all!.....let's see if we can get over that 400hp mark to the wheels by exhaust alone.....