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HEMIDARTS
mopar addict


Reged: Oct 06 2004
Loc: ohio
Whats the difference between 5.7 and 6.1 HEMI?
      #5004101 - Thu Feb 05 2009 06:57 PM

I am looking at buying a new Challenger, and I am
trying to figure out what the differnce is between the RT and SRT8.
Are the heads different, the intake, the cam, the
bottom end? I am wondering if you could just upgrade
a couple parts on the 5.7 and then have the same performance of 6.1?
I posted this here because it is a performance question. Thanks.


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wldtm
mopar addict


Reged: May 17 2005
Loc: Dayton, Ohio
Re: Whats the difference between 5.7 and 6.1 HEMI? [Re: HEMIDARTS]
      #5004165 - Thu Feb 05 2009 07:23 PM

dont quote me on this, but i beleive for 09 the 5.7 is rated at 390 hp and the 6.1 at 425. i personally would not spend the money for an srt, unless you are just worried about the package.

the 6.1 has been around since about 05
and the 5.7 is the new Eagle 5.7 hemi in 09. It has variable cam timing, different heads, and a different intake from previous 5.7 cars and trucks.

There have been quite a few posts here where 5.7 cars have out ran or at least kept up with a 2008 6.1. the 08 6.1 autos did not have the 3.90s that are now offered in the 09 6.1 manual trans cars.

i guess what i am saying is an 08 srt auto car to me is not very impressive, mainly cause of the rear gear ratio.

the 09 5.7 stick cars comes with 3.90 and 390 hp
the 09 6.1 stick cars comes with 3.90 and 425 hp

i will let someone else chime in thats actually got money to drive one

justin

--------------------
Interested in having you car wired? Drag car, street car, EFI swap?
PM for details


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HEMIDARTS
mopar addict


Reged: Oct 06 2004
Loc: ohio
Re: Whats the difference between 5.7 and 6.1 HEMI? [Re: wldtm]
      #5004179 - Thu Feb 05 2009 07:28 PM

Thanks for the info.
I am looking at the 6 speeds.


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wldtm
mopar addict


Reged: May 17 2005
Loc: Dayton, Ohio
Re: Whats the difference between 5.7 and 6.1 HEMI? [Re: HEMIDARTS]
      #5004197 - Thu Feb 05 2009 07:32 PM

see signature below ...

--------------------
Interested in having you car wired? Drag car, street car, EFI swap?
PM for details


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HEMIDARTS
mopar addict


Reged: Oct 06 2004
Loc: ohio
Re: Whats the difference between 5.7 and 6.1 HEMI? [Re: wldtm]
      #5004221 - Thu Feb 05 2009 07:39 PM

I noticed that and i totally agree!!

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BobR
mad man


Reged: Oct 01 2004
Loc: Left Coast
Re: Whats the difference between 5.7 and 6.1 HEMI? [Re: HEMIDARTS]
      #5004246 - Thu Feb 05 2009 07:45 PM

I thought that the new 5.7 hemis are rated at 372 HP. There is more to the SRT package than the engine. It will always be more exclusive if that means anything to you.

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HEMIDARTS
mopar addict


Reged: Oct 06 2004
Loc: ohio
Re: Whats the difference between 5.7 and 6.1 HEMI? [Re: BobR]
      #5004294 - Thu Feb 05 2009 07:58 PM

I saw that also, online 5.7 is rated at 372HP.
But the truck 5.7 is rated at 390HP, that is interesting.
It will be more exclusive, but it is a lot more money.
There are alot of things to take into consideration about these cars.


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gch
Polara Prince


Reged: Mar 06 2005
Loc: Central NC
Re: Whats the difference between 5.7 and 6.1 HEMI? [Re: BobR]
      #5004298 - Thu Feb 05 2009 07:59 PM

I believe the 09 5.7 is rated at 390 hp in the Dodge Ram only.The Challenger/Charger is rated at 372 or 375 I believe depending on auto or stick.It would'nt make much sense to have only a 35hp spread for the added markup of an SRT-8.
I believe the intake and camshaft are different as well as the bottom end is stronger on the SRT-8 to handle the extra rpm.

--------------------
You can't fix stupid
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70 Polara 4dr 496/727/3.73
98 Grand Cherokee 4.OH
75 Newport 440 on life support


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HEMIDARTS
mopar addict


Reged: Oct 06 2004
Loc: ohio
Re: Whats the difference between 5.7 and 6.1 HEMI? [Re: gch]
      #5004317 - Thu Feb 05 2009 08:05 PM



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67HEMI
super stock


Reged: May 27 2008
Loc: Mopar Lane,Mississippi
Re: Whats the difference between 5.7 and 6.1 HEMI? [Re: HEMIDARTS]
      #5004329 - Thu Feb 05 2009 08:08 PM

The heads are also different.

--------------------
'67 Coronet Blown Aluminum HEMI w/bolt ons.
'07 D2500 QC 6.7 Cummins w/ bolt ons.
'09 SRT 8 Challenger 6.1 w/ bolt ons.



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The Stig Jr
super gas


Reged: Sep 25 2003
Loc: Duloc
Re: Whats the difference between 5.7 and 6.1 HEMI? [Re: 67HEMI]
      #5004927 - Fri Feb 06 2009 05:25 AM

Two different engines although some parts interchange.


--------------------
If we aren't supposed to eat animals, then why are they made out of meat?


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ZIPPY
Get-Real! Get-X!


Reged: Jan 20 2003
Loc: S.E. Michigan
Re: Whats the difference between 5.7 and 6.1 HEMI? [Re: HEMIDARTS]
      #5004979 - Fri Feb 06 2009 06:07 AM

Heads, intake, cam, springs, forged crank and rods instead of cast are the biggest differences. The block is supposed to be a little stronger but looking at them side by side....I dunno if that's really true.

The thing is, everything mentioned above will swap on to a 5.7. The crank for example literally drops right in. You can make darn near the same power with a 5.7 for alot less money, but it'll never be considered the crown jewel like the 6.1.

The 6.1 is larger CI to begin with and has more potential for bigger displacement via the plethora of stroker kits out there..... But again the 5.7 isn't far behind and is dirt cheap in comparison.

I'm more than likely picking up a 5.7 today to mess with and it'll be the second one I've rebuilt. The first one was bone stock, just needed bearings, but this one is in rougher shape. Mopar has forged .020 over pistons for only 200 bucks right now (see my post in the new product area) so those will likely go in it, and I'm thinking about a 6.1 crank and rod upgrade also. Low buck forged bottom end. I'm thinking about running this one on carbs instead of FI just to be different.

--------------------

11.0 @ 123 so far


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440Jim
Diamond Jim


Reged: Jan 19 2003
Loc: Southern Maryland
Re: Whats the difference between 5.7 and 6.1 HEMI? [Re: HEMIDARTS]
      #5005067 - Fri Feb 06 2009 07:21 AM

I always am amazed at the price difference between packages.
Roughly $8k from the base model car to the 5.7 Hemi R/T, and another $10k from the Hemi to the SRT8 package.

SE 2-door coupe $21,820

R/T 2-door coupe $29,820

SRT8 2-door coupe $39,820
Price note: SRT8 adds $1751 Gas-Guzzler Tax


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4406brl
Loves Fixing Fords


Reged: Oct 07 2004
Loc: table
Re: Whats the difference between 5.7 and 6.1 HEMI? [Re: HEMIDARTS]
      #5005077 - Fri Feb 06 2009 07:24 AM

One is made in mexican plant with people who can not afford the cars they go in.
And the other is made in a mexican plant with Oh wait, No differance

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69 4-speed a12 11.42 @ 118. 3880#


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hemidup
super stock


Reged: Nov 19 2008
Loc: MN
Re: Whats the difference between 5.7 and 6.1 HEMI? [Re: 4406brl]
      #5005148 - Fri Feb 06 2009 08:01 AM

Block wise, the 5.7 has a solid casting through the main webs were the 6.1 has a 'D' shape opening in the web. For windage??? I don't know. The 6.1 also has neat little oil squirter's to help cool the pistons where the 5.7's don't. Sonic checking both the blocks, the 5.7 can handle more of an over bore than the 6.1. The 6.1 comes with a forged crankshaft which will drop right in a 5.7 and also has 4 bolts that attatch the toner ring to the crank compared to the 5.7's cast crank with only 3 toner ring bolts.

--------------------
Jerry Williams.


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HEMIDARTS
mopar addict


Reged: Oct 06 2004
Loc: ohio
Re: Whats the difference between 5.7 and 6.1 HEMI? [Re: ZIPPY]
      #5005223 - Fri Feb 06 2009 08:44 AM

Now this is getting interesting.
It sounds like the 5.7 is the best bang for the buck.
And its not that hard to swap a few things and be right with the 6.1.


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