new hemi, in an 03 HD auto truck
http://www.dodgetrucks.org/forums/viewtopic.php?t=12676

 

So this guy wants everyone to believe that he has a 7% loss in the driveline??

Time to raise the BS flag.

 

Is that possible? The peak torque numbers are at 300 rpms higher than the peak hp numbers. Shouldn't peak torque be made lower in the rpm range?

 

Considering the fact that he would have to make the stated torque output at 4800 revs for the numbers to add up, I'm assuming the flag is already waving.

 

Here:

 

well they could be just underrated....

 

Theres no fricken way those are SAE corrected numbers!

I want to see the dyno sheet!

 

Those are not even REAL numbers, let alone SAE corrected. There's no way that the peak hp and torque numbers are that close together in the rpm range, and reversed.

 

That's not the only dyno i have heard about on the new Hemis, they have all been around the loww 300s for HP. I think they just under rated it, they have done that before on the old Hemis, didn't they?

 

Those dyno #'s seem high to me. I bet once they put that engine in the 1/2 ton trucks, you will people trying to hop them up to compete against the Lightning.

 

Simply put:

Alot less hp and torque than I got.

Discussion over.

 

Did anyone check for a nitrous bottle?

Did they use an SAE correction factor? or a "hero" correction factor?

 

They don't underate them, there are some serious liability issues with doing that. The published numbers on a Lightning at least are the low end of a series of tests performed, they're not the highest they got, but they're real. Back int he sixties they underated numbers for insurance reasons, but since them the insurance companies have gotten better lawyers, you can take it to the bank that any published number can be backed up with books full of test info.

G