i was looking on some post and noticed that the 09 dodges way more power than the 3rd gens. 3rd gens have 345HP and 4th gen has 390hp.


Im wondering what the 09s are useing to get them numbers cuz as far as i know they have the same engine and stuff, so do they have different cams, heads, injectors, or what?

 

is that crank hp or rwhp?

 

From http://www.allpar.com/mopar/new-mopar-hemi.html

2009 Hemi: 390 hp / 407 lb-ft in the Ram
359-375 hp in cars (as per Car & Driver)

Variable cam timing was introduced for the 2009 model year, increasing efficiency. Other changes include a higher compression ratio; higher-flowing heads, intake, and exhaust; and an active intake manifold that switches from long runners to short runners, to optimize the engine for either better high-end horsepower or better low-end torque. Other upgrades are crankshaft structural upgrades, a dual-mass crankshaft damper, floating pin piston design, valve spring design, and oil pump capacity increase.

 

I think it just comes down too just newer things. Better tuning, different parts, and stuff like that.

 

its all about whos driving

 

that variable cam is some slick ****. read up on it. it's something they experimented with on the viper, and carried it over onto the hemi.

 

What no one seems willing to tell me (engineer wise) is if the 09 heads will physically bolt on and function correctly with a pre-09 block. From what I've read, those heads flow better (in this application, anyway) than stock 6.1 heads.