So what do I have to do to beat a 5.0

[07-SRT]

And as for SAE ratings and not being underrated. What about the Challenger? Isn't that also an SAE engine. This is the 392 vs a camaro from Inside line. I know you say their numbers are high, but the camaro looks to be around 360-370, which is typically what you see for a LS3. The 450 of the challenger seems high for the 470 hp rating, but I believe Henessey dynoed a stock 392 and it laid down like 420 rwhp. 420 rwhp would be a drivetrain loss of 11%. Are the Challengers also just more efficient? How so? I believe they run IRS like the camaro

I'm lead to believe the NAG1 (5-speed auto) is really efficent.... Look at the 6.1 also. Most put down on average in the 360's stock, close to what a LS3 would put down.

[MauriSSio]

Originally Posted by 07-SRT

And as for SAE ratings and not being underrated. What about the Challenger? Isn't that also an SAE engine. This is the 392 vs a camaro from Inside line. I know you say their numbers are high, but the camaro looks to be around 360-370, which is typically what you see for a LS3. The 450 of the challenger seems high for the 470 hp rating, but I believe Henessey dynoed a stock 392 and it laid down like 420 rwhp. 420 rwhp would be a drivetrain loss of 11%. Are the Challengers also just more efficient? How so? I believe they run IRS like the camaro

I'm lead to believe the NAG1 (5-speed auto) is really efficent.... Look at the 6.1 also. Most put down on average in the 360's stock, close to what a LS3 would put down.

I agree with your post. Those dodge boys sure like to complain about their 5 speeds and how the competition has 6speeds but that 5speed sure puts the power down well. Btw that inside line dyno is very happy. Most 392s dyno closer to 410-415rwhp

[Deki]

Originally Posted by MauriSSio

I agree with your post. Those dodge boys sure like to complain about their 5 speeds and how the competition has 6speeds but that 5speed sure puts the power down well. Btw that inside line dyno is very happy. Most 392s dyno closer to 410-415rwhp

The insideline dyno also put a stock GT at 38x whp as well. It reads high.

[MauriSSio]

Originally Posted by Deki

The insideline dyno also put a stock GT at 38x whp as well. It reads high.

380rwhp isnt unbelievably high for a stock 5.0 especially one that is broken in. its a tad on the high side but there are a plenty of them that have hit 375-385rwhp broken in

[Deki]

Originally Posted by MauriSSio

380rwhp isnt unbelievably high for a stock 5.0 especially one that is broken in. its a tad on the high side but there are a plenty of them that have hit 375-385rwhp broken in

I see what you are saying, but those that hit 375-385whp stock still don't run any faster than the ones that dynoed 360whp. The engines are SAE certified at 412hp. Period. There is going to be deviations between any dyno due to air temperature, operator, corrections, humidity, or a variety of other factors. It's a mass produced engine, and you're not going to get a 5% difference in power between them.

[MauriSSio]

Originally Posted by Deki

I see what you are saying, but those that hit 375-385whp stock still don't run any faster than the ones that dynoed 360whp. The engines are SAE certified at 412hp. Period. There is going to be deviations between any dyno due to air temperature, operator, corrections, humidity, or a variety of other factors. It's a mass produced engine, and you're not going to get a 5% difference in power between them.

You won't see a big variance in power output at the crank, but you certainly can see and produce variably different through the drivetrain. Power at the wheels is more important than the number at the flywheel

[GR8PUMKN]

^^^^^this^^^^

[Deki]

Originally Posted by MauriSSio

You won't see a big variance in power output at the crank, but you certainly can see and produce variably different through the drivetrain. Power at the wheels is more important than the number at the flywheel

So if you have a 2011 5.0 with an MT82 and 3.73 gears, on the stock 19" wheel and tire, and I have the exact same car with the exact same options, but you dyno yours where you live and get 380whp and I dyno mine where I live and get 360whp, your car has more horsepower than mine? No. They are still both rated at 412hp SAE. The variables come in from the dyno, the dyno operator, and a host of other variables. You can't say car A is underrated, yet car B is not, purely based on the dyno. People that spew dyno numbers out like that don't get the real point of it. You can't even compare a dyno on the same car done on different days. It's a tuning tool. Nothing more, nothing less.

[Bad70supreme]

Originally Posted by Deki

So if you have a 2011 5.0 with an MT82 and 3.73 gears, on the stock 19" wheel and tire, and I have the exact same car with the exact same options, but you dyno yours where you live and get 380whp and I dyno mine where I live and get 360whp, your car has more horsepower than mine? No. They are still both rated at 412hp SAE. The variables come in from the dyno, the dyno operator, and a host of other variables. You can't say car A is underrated, yet car B is not, purely based on the dyno. People that spew dyno numbers out like that don't get the real point of it. You can't even compare a dyno on the same car done on different days. It's a tuning tool. Nothing more, nothing less.

Exactly, people spend way to much time worrying about dyno numbers! It is a tool and that's it, the truth is at the track and what your car traps at! I don't know how many people buy a cam that will make X amount at the tire on the dyno and think that's the best choice for there car. I do think some cars are just stronger from the factory, but there is no way they would put down a 20hp difference on the same dyno at the same time.

[scrming]

Originally Posted by Bad70supreme

Exactly, people spend way to much time worrying about dyno numbers! It is a tool and that's it, the truth is at the track and what your car traps at! I don't know how many people buy a cam that will make X amount at the tire on the dyno and think that's the best choice for there car. I do think some cars are just stronger from the factory, but there is no way they would put down a 20hp difference on the same dyno at the same time.

Completely agree... Dynos are nice and a convenient way to track the progress of your changes... but for a more complete story, I'll take a time slip over a dyno sheet any day!

[GR8PUMKN]

2 cars from the same line next to each other can be greatly different performance wise.. Some are FREAKS out of the factory for sure

[MauriSSio]

Originally Posted by Deki

So if you have a 2011 5.0 with an MT82 and 3.73 gears, on the stock 19" wheel and tire, and I have the exact same car with the exact same options, but you dyno yours where you live and get 380whp and I dyno mine where I live and get 360whp, your car has more horsepower than mine? No. They are still both rated at 412hp SAE. The variables come in from the dyno, the dyno operator, and a host of other variables. You can't say car A is underrated, yet car B is not, purely based on the dyno. People that spew dyno numbers out like that don't get the real point of it. You can't even compare a dyno on the same car done on different days. It's a tuning tool. Nothing more, nothing less.

No I never said that at all. Your argument will just be with yourself if you dont comprehend what others are posting. I'm saying that all the moving parts and variables in the drivetrain can very well affect how much power gets put to the wheels. Doesnt have to change the engine rating ady all. You also have to take into account WHEN in the engines life said car was dynoed at, a broken in engine produces different power than a brand new one. You just seem mad that youre one of the lowest dynoing 5.0s ever seen and are looking for excuses why that is. Trap speed is an excellent indicator as well but tracks have variances as well.

[MauriSSio]

Originally Posted by scrming

Completely agree... Dynos are nice and a convenient way to track the progress of your changes... but for a more complete story, I'll take a time slip over a dyno sheet any day!

timeslips are an awesome way to show off power if you have a "good" or fast track!!!

[Deki]

Originally Posted by MauriSSio

No I never said that at all. Your argument will just be with yourself if you dont comprehend what others are posting. I'm saying that all the moving parts and variables in the drivetrain can very well affect how much power gets put to the wheels. Doesnt have to change the engine rating ady all. You also have to take into account WHEN in the engines life said car was dynoed at, a broken in engine produces different power than a brand new one. You just seem mad that youre one of the lowest dynoing 5.0s ever seen and are looking for excuses why that is. Trap speed is an excellent indicator as well but tracks have variances as well.

You're right, my Mustang dynoed 320whp stock...which is out of the norm for the stock 500whp dynos. My dyno penis feelings are hurt that my car dynoed so low...oh wait, I ran a 12.77@111 stock, down to my all season Pirelli. I could care less what someone in another part of the country dynos. I don't care what anyone dynoes ever. You're the only one arguing your own stupid point that makes no sense.