serious power adders for the 4.7?
#22
11-28-2008, 11:07 PM
I have run both and would have to side with the JBA headers... I can get you either set... but from the sets I have seen the JBA where of better quality.
Also, I would not add headers until you have addressed the true restrictions of your exhaust system.
Your factory "Y" pipe is the single greatest restriction in the system. Make sure you address that with a HIGH FLOW "Y" pipe. I would go from the factory primary tubes (2.25") to the "Y" and merge that into a SINGLE 3" system useing a SINGLE 3" CAT & HIGH FLOW MUFFLER. After you have completed that set up you will be ready for headers. But until then your headers will only flow as much as your greatest restriction will allow. This is why some people claim headers don't work on the 4.7L... because they never address the greater restrictions in the system first.
SPEED SAFE, AIR RAM
Also, I would not add headers until you have addressed the true restrictions of your exhaust system.
Your factory "Y" pipe is the single greatest restriction in the system. Make sure you address that with a HIGH FLOW "Y" pipe. I would go from the factory primary tubes (2.25") to the "Y" and merge that into a SINGLE 3" system useing a SINGLE 3" CAT & HIGH FLOW MUFFLER. After you have completed that set up you will be ready for headers. But until then your headers will only flow as much as your greatest restriction will allow. This is why some people claim headers don't work on the 4.7L... because they never address the greater restrictions in the system first.
SPEED SAFE, AIR RAM
#23
11-28-2008, 11:12 PM
A stock 5.7L HEMI QUAD CAB RAM runs consistent 10.2's /10.3's all day long.
My 4.7L MAGNUM QUAD CAB RAM runs consistent 9.49's all day long.
SPEED SAFE, AIR RAM
#24
11-28-2008, 11:15 PM
If your into heavy modifications (Ported heads/Cams/Intakes) then you would be into the SCT tune. Our tuner has the software for the 1999-2002 4.7L engines... We can put you into contact with somone who can tune the 2003-Up 4.7L engines.
So there is hope for the 4.7L engine as far as tuning goes.
SPEED SAFE, AIR RAM
#25
11-28-2008, 11:17 PM
Trust me, I have already been down that road and still feel the pains he has caused me.
If your plan on ported heads, you need to go with SCT and a Wide Band Data Logger. This would be the quickest and most cost effective way to tune your engine...
SPEED SAFE, AIR RAM
#26
11-30-2008, 02:07 PM
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#28
05-26-2009, 12:49 AM
I have a 2004 Dodge Ram 1500 with the 4.7 its a single cab longbed. I just bouth a camper weighing about 4000 lbs and when towing it I sometimes find my trucks rpms jumping to 6000 to 7000. Any suggestions on how to get more power out of my truck? It has straigt pipe exaust but i dont know if that is helpful or not.
#29
01-30-2010, 11:36 AM
While the heads from the 08 (corsair) 4.7 will bolt on the 07 bottom end, your not gonna get the power that the 08 engine makes unless you swap the pistons too. The pistons are a dome/dish design that is totally different than 07 back. You would be better off to find a used corsair engine out a wreck and just do a swap.
#30
01-30-2010, 01:54 PM
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i have an 07 qc with the 4.7 and im on the hunt for some more power ive thought about the 5.7 or 6.1 swap but i dont have to get to crazy i would like to get some 08 semi hemi heads and ecm flash along with full exhaust i just cant find any where to get those nor do i know what all goes into changing to those heads if any of you guys in the know could pass on some of that info id greatly appreciate it