Gibson Headers for the Hemi - Jeep Commander Forums: Jeep Commander Forum
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post #1 of 9 (permalink) Old 07-11-2012, 06:45 PM Thread Starter
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Gibson Headers for the Hemi

I was over at the Gibson main office and plant here in Corona and I asked then if they had headers for a Commander Hemi. They do not but said if I left my Commander with them for about two weeks that they could create the prototype for Commander Hemi Headers. Is there any interest in getting headers by anyone on here. I never really followed the subject when I had the 4.7 engine.

I have had Gibson headers on a few motor homes in the past.

2007 Jeep Green Limited 4.7 Flex Fuel, RR 2.5" 4 inch Superlift coils on rear, 1.5" Spacers, Bridgestone 265/70/17, K&N CAI, Flowmaster, Diamond Plate Locking Trunk, Blue Ox Baseplate w/D-rings, "Get Lost 4X4" Front Bumper, T-Max 9000 winch, "Get Lost rear tire carrier, 30 gal second gas tank.
Second 2007 Jeep Green Limited Leather HEMI QDII VES Uconnect Flowmaster OEM Skids Tow Package

Maybe the two will meet up soon edit: they did , I now have 2,now gave 1 away...and got it back again.
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post #2 of 9 (permalink) Old 07-11-2012, 07:37 PM
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I'm sure there is interest. But I'm sure they would be fairly expensive. Did they give you a price ?

2006 Steel Blue 5.7L HEMI Limited 4x4 Build Date: June 9, 2006 Hour 14
Interior: Dark Slate/Light Graystone with Saddle Brown Leather Seats
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post #3 of 9 (permalink) Old 07-12-2012, 07:08 AM
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Want, yes. Afford, no. lol.
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post #4 of 9 (permalink) Old 07-20-2012, 05:02 PM
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I would be interested in these!
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post #5 of 9 (permalink) Old 07-21-2012, 10:25 AM
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First thing I would want to know is a approx. gain in MPG and power. I'm sure they have a computer program for this. Then there is the matter of cost. I'm sure there will be gains in both areas but are they worth the cost? Bet it would sound great with them on!
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post #6 of 9 (permalink) Old 07-23-2012, 05:23 AM
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The gain in MPG will be nominal. At an increase of 0.5 MPG it will take the lifetime of the Jeep plus a few more years to hit the break even point in cost.

Additionally, headers are just 1 part in the equation to better fuel economy and power. You have to make gains on both the intake and the exhaust side of the engine to see real increases and even at that the cost will far outweigh the gains.


As far as market for headers, yes the market would be there but it will be a small niche. The vehicle is discontinued and despite being a capable off road vehicle, lets face it, most of them are soccer mom mall crawlers.
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post #7 of 9 (permalink) Old 07-23-2012, 09:46 AM
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Yes the MPG gain will be nominal, however the HP and TQ gain would be worth it. If your worried about MPG then your definately driving the wrong vehicle and should be driving a smart car or prius.

You are correct about the headers being only one part of the equation. But im almost positive anyone thinking about going with headers or anyone that would actualy purchase them if they were made for the XK is probablly looking for more power out of their engine. With that being said they most likey already have some sort of cold air intake, ported throtle body, cat back exhaust and some sort of tuner programed. Every mod helps!




2007 4.7 Liter XK | Front OME MD Springs w/Superlift Preload Spacer | Rear 4" Superlift Springs | Bilstein 5125 Rear Shocks | JBA UCA's | Rusty's Rear Adjustable Track Bar | Black Rock 997 Wheels | Fred Goeske 1/4 Inch Wheel Spacers | 305/70R17 Goodyear Wrangler MT/R w/Kevlar | Airflow Snorkel | Flowmaster 40 Series Muffler | Superchips Flashpaq | Mopar Skids | 4xGuard Belly Guard | American Rebel Rear Diff Cover | Rear Powertrax No-Slip | Front E-Locker | Rear Heat/AC Delete
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post #8 of 9 (permalink) Old 07-24-2012, 08:42 AM
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I have had headers on cars in the past, not a Commander. I can tell you THERE IS a hp gain and very noticeable torque gain on the vehilcle. Longer tubes are better than short tubes, but they have to make fitment for the vehicle which may mean "short tubes." You may want to research this.

2007 Jeep Commander 4X4, 4.7, Steel Blue
2003 Ford Thunderbird, White, Black Top w/ Port Holes
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post #9 of 9 (permalink) Old 07-24-2012, 03:10 PM
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Join Date: Oct 2009
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would love headers. im actually thinking of buying hemi ram headers and having the shop make them work. or buy stock srt8 manifolds

2006 Commander Limited, Jeep green metallic w/ Saddle Brown. 5.7 HEMI, Quadra-drive II system.
Brutforce Intake
3" catback with magnaflow
Diablo tuner
2" Budget boost
1.5" wheel spacers


1990 Grand wagoneer
4" Bjs off road
1" HD shackles
33" BFG KM2
Roof rack

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