Go Back   Jeep Garage - Jeep Forum > Jeep Platform Discussion > Grand Cherokee - WK

Join Jeep Garage Today
Reply
 
Thread Tools Display Modes
 
  #13  
Old 09-27-2010, 10:25 AM
Member
My Jeep: 2009 5.7L WK
 
Join Date: Sep 2010
Location: Tampa, FL
Posts: 32
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 1427
tpabayflyer is on a distinguished road
Re: 5.7L hemi headers

Get some srt8 exhaust manifolds and you are set! I just installed a complete srt8 exhaust on my 09 and it made a huge difference. Stock exhaust manifolds are pretty restrictive and make some very sharp turns exiting the head. Long tube headers on a mostly stock 5.7 would not be worth it in my opinion. Use a bigger cam, porting,etc and I would say yes but my jeep feels a ton stronger with just a a CAI, Diablosport 93 tune and srt8 exhaust with no resonators..... I will get this thing to the track soon but I expect no problem hitting 13's in the 1/4.... stock HP rating was 357 and I figure over 400 now..... FWIW, 09 heads have the "D" port exhaust that matches the port window shape perfectly for the srt8 headers.... TBF
__________________

__________________
Reply With Quote
  #14  
Old 09-27-2010, 11:18 AM
hemi.jon's Avatar
Member
 
Join Date: May 2009
Posts: 802
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 2728
hemi.jon has a reputation beyond reputehemi.jon has a reputation beyond reputehemi.jon has a reputation beyond repute
Re: 5.7L hemi headers

Quote:
Originally Posted by tpabayflyer View Post
I will get this thing to the track soon but I expect no problem hitting 13's in the 1/4.... stock HP rating was 357 and I figure over 400 now.....

Um not to knock you, but you cant stack all the HP #s things say you should gain to figure out what your running..
__________________

__________________
Reply With Quote
  #15  
Old 09-27-2010, 11:49 AM
08Hemi's Avatar
Senior Member
My Jeep: 2008 5.7L WK
 
Join Date: Jun 2009
Location: Santa Barbara, CA
Posts: 4,296
Thanks: 0
Thanked 25 Times in 30 Posts
Rep Power: 330350
08Hemi has a reputation beyond repute08Hemi has a reputation beyond repute08Hemi has a reputation beyond repute08Hemi has a reputation beyond repute08Hemi has a reputation beyond repute08Hemi has a reputation beyond repute08Hemi has a reputation beyond repute08Hemi has a reputation beyond repute08Hemi has a reputation beyond repute08Hemi has a reputation beyond repute08Hemi has a reputation beyond repute
Re: 5.7L hemi headers

^^ So what have you ended up doing with your headers Jon?
__________________
Reply With Quote
  #16  
Old 09-27-2010, 11:57 AM
hemi.jon's Avatar
Member
 
Join Date: May 2009
Posts: 802
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 2728
hemi.jon has a reputation beyond reputehemi.jon has a reputation beyond reputehemi.jon has a reputation beyond repute
Re: 5.7L hemi headers

Quote:
Originally Posted by 08Hemi View Post
^^ So what have you ended up doing with your headers Jon?

mine are stock right now..im working on something else atm with the jeep..hehehe


but always in the past with other vehicles/project Long tubes..and they never costed near $1000..
__________________
Reply With Quote
  #17  
Old 09-27-2010, 12:03 PM
08Hemi's Avatar
Senior Member
My Jeep: 2008 5.7L WK
 
Join Date: Jun 2009
Location: Santa Barbara, CA
Posts: 4,296
Thanks: 0
Thanked 25 Times in 30 Posts
Rep Power: 330350
08Hemi has a reputation beyond repute08Hemi has a reputation beyond repute08Hemi has a reputation beyond repute08Hemi has a reputation beyond repute08Hemi has a reputation beyond repute08Hemi has a reputation beyond repute08Hemi has a reputation beyond repute08Hemi has a reputation beyond repute08Hemi has a reputation beyond repute08Hemi has a reputation beyond repute08Hemi has a reputation beyond repute
Re: 5.7L hemi headers

gotcha...still have the elec cut-out?
__________________
Reply With Quote
  #18  
Old 09-27-2010, 12:04 PM
hemi.jon's Avatar
Member
 
Join Date: May 2009
Posts: 802
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 2728
hemi.jon has a reputation beyond reputehemi.jon has a reputation beyond reputehemi.jon has a reputation beyond repute
Re: 5.7L hemi headers

its going to a buddy of mine. pending his new truck..lol
__________________
Reply With Quote
  #19  
Old 09-28-2010, 07:41 AM
Member
My Jeep: 2009 5.7L WK
 
Join Date: Sep 2010
Location: Tampa, FL
Posts: 32
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 1427
tpabayflyer is on a distinguished road
Re: 5.7L hemi headers

Quote:
Originally Posted by hemi.jon View Post
Um not to knock you, but you cant stack all the HP #s things say you should gain to figure out what your running..
This is not my first time modifying a vehicle my friend....long time Mopar tuner here, big and small block....... track numbers will tell the story for sure but my seat of pants gauge leads me to believe that the K&N CAI,DS Tune,and full srt8 exhaust is worth at least 40HP..... I am astounded at the difference in power and response those 3 changes have made on a stock 09 5.7..... i am not sure of the cam specs of this engine as it does have the VVT and I would like to know what the specs are with and without the VVT operating.... I see some new cams have just come out in the .560 range and think I should get some nice gains from a cam upgrade as well. Stock cam is very,very smooth and I'm sure lift and duration are both quite mild........ TBF
__________________
Reply With Quote
  #20  
Old 09-28-2010, 08:51 AM
Member
 
Join Date: Oct 2009
Location: Chicago Area, IL
Posts: 906
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 2685
yousmellfunnytoo has a reputation beyond reputeyousmellfunnytoo has a reputation beyond reputeyousmellfunnytoo has a reputation beyond repute
Re: 5.7L hemi headers

Here is an idea....

Buy a pair of these:
http://cgi.ebay.com/ebaymotors/ws/eB...d=150488104151

They are OBX brand, which from my research are outsourced Kooks (knock-offs).. They are still made of 304 stainless and I have seen great reviews all over the webz.

Then you have to worry about the port matching... 555ctsv just bought the 6.1 gasket and went with it.

If you have 09 heads, they will fit

Maybe someone can contact obx and ask them to make a few sets with the 5.7 flange from the LX's so we can buy them.
__________________

__________________
09 STI - Mine :D
08 Liberty - Her's
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
HEMI Commander Limited S.O.T.I. 2005+ Jeep Commander XK 41 08-06-2010 11:17 PM
LTrainGC's 2005 WK Limited Hemi LTrainGC Members Rides 58 02-01-2010 10:41 AM

Powered by vBadvanced CMPS v3.2.3

All times are GMT -5. The time now is 02:10 AM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Copyright 2012 - JeepGarage.Org
The Jeep Grand Cherokee Owners Community