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-   -   Hp info (

Jayzsun 08-15-2012 02:06 AM

Hp info
2012 5.7 liters HEMi is 390hp....crank or wheels?
Anyone dynoed his stock truck here?I need the wheels hp's and or the drivetrain loss(%).

Grubrunner 08-15-2012 02:34 AM

The "claimed" 390 ponies is crank.

Yes, several have dynoed their trucks and I'm sure they'll chime in upon discovering this thread.

There are TONS of variables, but I've always been taught that there's app. 15-20 percent loss/change of HP from crank to the wheels.

Finally, there's really no need to post multiple threads asking the same questions on various sections of the boards. Most members use the "New Posts" button so, believe me, one time only and your thread will be viewed by MANY.


Jchaney579 08-15-2012 03:36 AM

308whp/332ftrq on my truck dynoed back a couple months ago when it only had 350 miles on it.

KarateManAZ 08-15-2012 03:55 AM

390 is at the crank. Most see 300ish to the wheels stock.

NWRQC 08-15-2012 07:28 AM

HP rating is at the crank.
Figure about 20% drivetrain loss so about 305-310hp at the wheels....

Red05Ram 08-16-2012 08:25 AM

Nice to have the new motor mines 300 rear wheel with full bolt ons and a cam lol

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