Pfadt Power Products C6 Corvette GS 2005-2008 1.75/2" LS2/LS3 Tri-Y Long Tube Header Package

Pfadt Power Products now brings you a race-proven Tri-Y header design making more HP and Torque at an affordable price!

    TRI-Y Design, 4-2-1 tube merging
    Makes much more torque under the curve, while still increasing top end HP
    1.75/2" tube diameter
    CNC flanges with OEM locating features
    Fully hand-TIG welded on-site
    T-304 16 Gauge Stainless Steel
    Fully Brushed Stainless Steel Finish
    V-Band Clamp connections
    Equal length long tubes
    1-piece X-Pipe available w/ and w/o Cats
    Full 3" collector and X-pipe
    Comes with bullet-nosed flange bolts for installation
    Available with 2 or 4 O2 Sensor extenders
    Available with Cometic Multi-Layer Steel gasket upgrades
    Exhaust system with Cats is 24lbs lighter than factory
    Exhaust system without Cats is 27lbs lighter than factory.
    Made in Salt Lake City, Utah

As you would expect, the beginning of a great header begins with a lot of hard work! We began our journey with a lot of number crunching. There are two main ways that a properly designed set of headers will make more power:

    Removing Restrictions -By reducing pumping losses you can increase the overall velocity of the exhaust gas coming out of the cylinders and make more power! We settled on a final tube diameter of 1.75 primaries and huge 2" secondaries which flow into one final 3" collector. This gradual step up in tube diameter ensures you will have great flow up to power levels of 850+whp. The Tri-Y design is a whole-different animal than a traditional 4-into-1. The unique aspect being that the combination of 1.75"/2" tubes supports horsepower levels at and above the range of a standard 1.875" 4-into-1 design.
    Pressure Pulse Tuning-Each time a volume of exhaust gas flows out of the head and into a collector, whether it be a Tri-Y or a 4-1 header design, when it comes in contact with a change in cross sectional area like a collector there is a negative pressure pulse sent back up the tube and back into the head at the speed of sound. This negative pressure pulse when tuned correctly can help improve scavenging by sucking fresh air into the cylinder. To take full advantage of this effect the lengths of the tubes must be designed to the proper length. One of the big reasons why a Tri-Y setup offers superior low end performance is because the 3 collectors in a Tri-Y let us optimize scavenging at both high and low RPM, rather than just one RPM range like in a typical 4-1 header.

Mid-Pipes with or without Catalytic Converters The mid-pipe will house your cats should you choose to run them. The cats being offered use a high flow Metal Matrix design, are extremely high quality and made in the USA, so you can be sure they will last you quite a long time. Typically you can expect more HP with a cat-less setup, but the cats are great for reducing some exhaust emissions, cutting down on both the strong fuel smell from a true performance tune and also slightly muffling the sound of an aggressive exhaust. For the vast majority of applications the catalytic converters are the only option. All of our Pfadt Tri-Y header products are intended for off-road use only, but for those looking for that last extra bit of HP a non-catted mid-pipe is available. The cats will be welded directly into the mid-pipe instead of welded and bolted to a flange, we chose to do this because it eliminates one more potential spot for leaks and misalignment. Our kits have the option of adding 2 or 4 Oxygen Sensor Extenders depending on if you have a mid-pipe with or without catalytic converters.

X-Crossover Design The crossover portion of the mid-pipe is important because it provides not only pressure and flow equalization between the left and right header banks, but also adds one more change in cross sectional area to help with scavenging. Just like the position of our Tri-Y collectors, the position of the X must be tuned to the proper length. We tried several different X pipe positions before settling on the final one. Our dyno tuning proved that where we positioned our X was making the most power over other positions with this particular header design. The differences weren't massive, but enough to prove that position 2 was the clear winner in midrange torque without much effect on top end power. Position 2 is the position we decided to run with!

Price Includes O2 Extender Harness and Gaskets!