horse power

[scottsjeep05]

Since i am a former Ford guy, can anyone please explain to me why the 5.7 in the Jeep is rated at 330 HP and the 5.7 in the Dodge's is 345 HP?????

[Matt]

EDIT: reading > me

[LTrainGC]

In the Jeep the Hemi puts down 330/375

In the 300C/Charger it puts down 340/390

In the Ram is puts down 345/375

I'm pretty sure it is just PCM programming that changes the numbers up. Might be a better flowing intake/exhaust on the 300C/Charger too.

[Dylans3960ccs]

do they have different trannys?

[scottsjeep05]

doesn't matter. when they say 330 thats at the engine not the rear wheels.

[Dylans3960ccs]

duh.

[scottsjeep05]

or in my case all the wheels

[Dylans3960ccs]

Hahaha my car makes more power at each wheel than yours. lol

[Scottina06]

dream on school boy

[mzh29]

dream on school boy


Scott did you install that manifold yet?

[AdamJ]

The differences in peak power can be accounted for in multiple ways, but primarily it is because the engineers have tuned each engine to produce a particular power range and torque curve.

The tune on the Ram probably maximizes low-end torque, while the hp probably falls down alot sooner after peak, where as the Jeep probably has the curve pushed a bit more into the middle letting the hp run out a few hundred rpms more and the LX tune probably goes even further into the RPMs.

Peak hp/tq don't mean nearly as much as how much total power and torque you have under the curves and where its placed in comparison to your transmissions gearing...

[Scottina06]

Scott did you install that manifold yet?

yeah....been in for a couple weeks

[Dylans3960ccs]

dream on school boy
It does :D
(FYI my jeep is 2WD)