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Pickups Chevrolet Silverado & GMC Sierra Chevy Silverado and GMC Sierra Accessories and Modifications
160 messages, Last post on Nov 20, 2009 at 7:43 AM
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| ANyone installed a set of SHorty headers on a 01-04 silverado 4.8 or 5.3. I have them ready to go just want to know if anyone has any tricks or do's and don'ts. Any time frame would help also. Thanks Cj | |
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You will need to watch for the airbag sensor that maybe triggered if you need to disconnect the steering shaft. Course that should be included in your instructions. I did mine on a lift so installed the headers from below thus avoiding the shaft issue. With the help of a friend and airtools, it took about 45 minutes total to do both sides. Does help that my friend owns the shop and is ASE certified.
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Replying to: obyone (Jul 04, 2007 2:04 pm)
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Replying to: 200448 (Jul 05, 2007 5:16 am) The situation might be a little different as I had installed the headers within 6 months of owning the truck and the stock gasket was like new. You should have no problems scraping off the old gasket. |
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Just wondering if anyone has gone down the same wrong path as myself. I installed a Gibson Dual Sport Exhaust system on my truck about a month and a half ago and have regretted it ever since. My truck is a 2007 new body with 5.3 liter with fuel management. Gibson rated the system as a 3 out of 10 in noise (sound). Actually the system is loud, more like 7-8 and resonates terribly in the cab. One recent trip actually had our family taking breaks to get away from the noise. Also, we experienced a terrible drone when in the 4 cylinder mode. Switching from 4-8 cylinders creates an almost afterburner like "light off" sound. Completely annoying is this system. I've contacted Gibson and they have told me that others have complained but I have received no resolution. Even more, I had to pay for an exhaust shop to cut and weld a different muffler in place until Gibson decides to take care of their mistake. Anyone else experiencing this?? Have you contacted Gibson? Appreciate any feedback. 
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Their in cab resonance is an industry leader. But they are popular as the CHEAPEST cat back system in the aftermarket. I personally gave it to a friend who works at a Midas shop. Told him to chop it and sell it as scrap if he wants. It really is a POS and I would never buy Gibson again. Now if you want a quality system I found that Corsa makes a great but expensive system and is the only company that is GM certified. Dump the Gibson they won't be able to help you. |
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hi all i have a question about the 5.3 liter with active fuel management. i want to put a flowmaster on my 07 gmc pickup,but worry about the switching back and forth from 8 cylinders to 4 cylinders. i was wondering about performance and more importantly i was wondering about what it would sound like in the 4 cylinder mode. thx for the help josh |
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Replying to: gmc6 (Aug 06, 2007 1:55 pm) I wasted a good amount of money to purchase a dual sport from Gibson Performance and have regretted it ever since. After spending lots of money trying to right a wrong, I'm kicking myself hard. First off, GM must have spent allot of engineering dollars getting that 4 to 8 cylinder transition to sound almost seamless, yes that muffler has to weigh almost 40 pounds and as big as a pony keg. What I've found at least with Gibson is that no engineering is done, just a cut and fit an off the shelf muffler in place... and it sounds like crap! As soon as the system shuts off 4 cylinders it sounds like someone trying to drown a VW bug, best description I can come up with. The sound resonates in the cab and can cause moments of insanity. I had a local muffler shop chop and place a glass packed muffler in place, it still is unbearable. If you go this route, I'd like to buy your stock system from you. Gibson is aware of the problem but has given me the absolute run around and has never delivered a solution, just allot of unkept promises. With all of my investigation afterwards I've found that only Corsa performance has engineered a true performance system with the 8-4 cyl. drone engineered out of the transition. They are also the only GM certified supplier of aftermarket exhaust. I wish I knew what I know now 3 months ago, and the story is lengthy. Hope this helps a little. Bye the way, as a long time Gibson Performance customer, I am finished. I've never been strung along and lied to like these folks have done to me, yes you Craig H. Schlog
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