[dpb119]

Mine has the traditional ring, not a band clamp. My factory catback has a section of flex pipe in front of the muffler just before the flange where it connects to the Y pipe. You may be able to order the Y pipe without the flange or possibly use a back flange. I'll try an upload some pics of what I have so you can see a little better.

EDIT:
The 1st pic shows the stock flange similar to my truck. The 3rd photo shows the Y pipe flange typical on the OBX. The 6th photo shows where the O2 sensor bracket needs to be disconnected on the passenger side. (left side of pic) As you can see, take the fender well out and you have room to work. Only takes a few minutes to remove them. Nice feature on the NNBS.

Stock Exhaust 1

• dpb119
• Oct 18, 2012

install 2

• dpb119
• Oct 18, 2012

OBX Headers 2

• dpb119
• Oct 18, 2012

OBX Long Tube Install Side View

• dpb119
• Jul 23, 2012

OBX long tube drivers side header install side view with fender well removed

OBX Long Tube Install Top View

• dpb119
• Jul 23, 2012

OBX Log Tube drivers side header install top view

OBX Header Install 1_manifold

• dpb119
• Jul 23, 2012

Removal of the fender well and manifold

 

[LSU627]

Sounds great man! And thanks for sharing that vid, sold me on getting long tube headers. That is one of the only mods I have left to do besides a custom tune or something along those lines. Great job!

 

[mjribeiro]

I spoke to a someone at dynatech - they supply an extension for the 2012 & 12 models. It is a short piece of pipe with a flange connector. part 780-00252 for those following along at home.... I assume the other manufacturers do the same.

 

[dpb119]

I've been getting emails from Maryland Speed lately running header sales. Might wanna give them a call and see if they can give you a deal on something.

 

[mjribeiro]

Here is a photo of the dynatech extension. OBX, ARH, and others all must have a similar part for the 2011 & 2012 models.
I feel guilty - but I ordered them......

 

[SMOKE]

Shorties make power in the lower RPM range where normally run in daily driving. LT's make power in the upper RPM range but make more torque. Like mentioned earlier in this thread for the amount of power gains on LT's vs shorties its up to you if it worth the extra money and instalation of the two. It took 2 hours for the install of the Gibson shorties on my 6.2 and it was a.breeze. LT's take quite a bit longer even if you have a lift. My 6.2 makes 372 at the tires with shorties. That's with a cat- back, CAI, and a tune with 4:11 gears with the converter unlocked. It's good for mid 13's in the quarter on street tires.

 

[Michael83]

Hi I'm a little new to this. Just picked up my first Silva, and I love the truck. I am looking to do some Gibson Shorties on her. 2011 5.3l Wondering how much of a PITA to put on those locking header bolts with all the tiny little parts on them. Also how do you get your hands/wrench to those cat flange bolts? Looks real tight down there. I am thinking of doing this myself as I am an HVAC mechanic and pretty good with this stuff, but I don't have a welder and worry about breaking the old header bolts. The truck only has 38K on it but the whole OEM cast iron manifold setup looks really rusty. Up here in NH we get alot of snow and salt. Should I just take it in and have someone else do it? I just worry they wouldn't take as much time and care as I would to get everything perfect...

 

[JLarsen45]

Don't be disappointed if you don't get an answer from your above post. This thread has been inactive for 2.5 years. Also, I'd recommend going with Long Tubes rather than shorties any day.