Stock HP

[FastNThe1320]

So I am newer to this sight, and we just recently bought our LS Camaro. Looking at the numbers for V6 HP, I'm seeing people dyno numbers around 235-250 stock. Just feels like the numbers seem a bit padded from GM. 312 and 323 on the LFX seems like approximately 25 percent loss through the drivetrain. This may have been discussed before and if so, sorry. My WS6 made 311 to the wheels bone stock, which at 15 percent loss would translate to give her take around 350 crank. And back in 01-04 I was pretty big into the Fbody scene and most cars stock were dynoing around the 300-315 range (saw a factory beast dyno 325 to the wheels stock). It seems like the old Fbody numbers were under inflated and the new Camaro number (V6 at least) seem to be a little over inflated. Just seeing what folks think.

[Sir Nuke]

the numbers are the difference of RWHP on a dyno, vs. the GM advertised Flywheel HP, which will always be more.

[6bangerBOOM]

Dynoing (word?) for rear wheel horsepower is subjected to too many variables (temperature, air pressure, humidity, ad nauseum), and are likely to show a great deal of variance. So offering the engine hp is better for car companies because they are typically more consistent numbers. And they look better, marketing wise, when the two other major American auto makers are both selling muscle cars too.

[The_Blur]

The market these days is filled with competitive vehicles. It's pretty hard to have padded numbers when the next company just wants to beat your horsepower number.

[FastNThe1320]

I understand why they use crank horsepower for marketing. It just seems like the Camaro is losing approximately 20 percent through the drive train, even on manual transmissions. With people putting down 235 when the advertised HP is 312...and I understand that external factors have to be considered, still seems the numbers look at little low when most cars lose approximately 15 percent from crank to wheel (I know autos are a little more). And yes, dynoing is a word..... maybe not an official dictionary entry, but I have heard enough people say it that I can assume you know what it means.

[VR Baron]

On the LLT V6 ITS 312. Dyno numbers I have seen posted 230 to 260 so as some have said, all over the place. Autos seem to be 240-250, Manual 250-260, on a dynojet

[Da Mammer]

Also don't forget that the difference between a mustang dyno and a dyno jet can be really significant since you can add weighted resistance to the mustang dyno where as the dyno jet is a straight 2500lbs. If you dynojet one of these cars and then strap it to a mustan dyno and add 3800lbs of resistance it's a whole new (lower) number. That's why the crank hp is best to advertise. You could have a more powerful car dyno less than a milder car all because of the dyno you use. Which could be why you're losing 20% instead of 10 or 15, but its a more real world application number.

[All Star]

F-bodies were rated very conservatively for horsepower to protect the Corvette.

All power figures are typically SAE certified processes now, so they should be pretty accurate.

[rickr9504]

Originally Posted by All Star

F-bodies were rated very conservatively for horsepower to protect the Corvette.

All power figures are typically SAE certified processes now, so they should be pretty accurate.

If it is SAE certified, it should then say "SAE certified" next to the number.