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-   -   Question about HP (http://www.jeepgarage.org/f73/question-about-hp-41716.html)

five.7 Hemi 05-05-2012 08:33 AM

Question about HP
 
Anyone know why the Ram trucks have 390hp and 407 lb/ft torque and the Jeep is only 360 and 390?
Anyone know if the cam is different, compression.....etc.

:thumbsup:

dizz1979 05-05-2012 05:05 PM

Re: Question about HP
 
I called Chrysler specifically with this question, they called me back two days later and said the engines are identical, it was strictly different programming.

five.7 Hemi 05-05-2012 05:07 PM

Re: Question about HP
 
Quote:

Originally Posted by dizz1979 (Post 625112)
I called Chrysler specifically with this question, they called me back two days later and said the engines are identical, it was strictly different programming.

Huh, thanks. That's good to know. So we could potentially gain 30hp with some better software.

padgett 05-05-2012 06:39 PM

Re: Question about HP
 
Suspect the programming is similar, is more marketting. Is the fuel requirement different ?

dizz1979 05-05-2012 06:41 PM

Re: Question about HP
 
Quote:

Originally Posted by five.7 Hemi (Post 625113)
Huh, thanks. That's good to know. So we could potentially gain 30hp with some better software.


That is why I can wait for one of the tuners to up the ante. I believe they are purposely keeping the hp lower so there is a much bigger gap between the 5.7 and the 6.4 SRT8.

Tybalt39 05-05-2012 06:57 PM

Re: Question about HP
 
Is it the same transmission/drive-train?

Raptor 05-05-2012 08:34 PM

Re: Question about HP
 
I think the 5.7's found in Mopar trucks have better flowing intake/exhaust systems that help the engines breath better for more power.
Tuning is also a factor, and an aftermarket programmer would probably open up the 5.7 Hemis found in our Grand Cherokees. Still waiting on that! :(

FlyinRyan 05-05-2012 08:41 PM

Re: Question about HP
 
tuning/exhaust.

five.7 Hemi 05-07-2012 06:28 PM

Re: Question about HP
 
I want to do an exhaust but what I really want to know is weather the SRT exhaust manifolds will work on the 5.7? If they will.....then will an SRT exhaust system work also?
It would be better if someone made headers for the 5.7.

Escape 05-07-2012 09:26 PM

Re: Question about HP
 
Order a set of exhaust manifold gaskets for both the 5.7 and 6.4. If they match up give it a go. If not return the parts.

five.7 Hemi 05-08-2012 07:53 AM

Re: Question about HP
 
Quote:

Originally Posted by Escape (Post 626301)
Order a set of exhaust manifold gaskets for both the 5.7 and 6.4. If they match up give it a go. If not return the parts.

Yeah, it's just a lot of work to find out if it will work or not. Was hoping some one would know. I contacted a company called Bouchillon Performance Engineering last night. They told me the exhaust ports aren't even close to the same.:(

Now what? The aftermarket sure does move slow on Jeep products.

http://bouchillonperformance.com/

6t6gto 05-09-2012 06:35 PM

Re: Question about HP
 
I think the Rams have a dual-runner intake........JB.


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