Pfadt Racing

Who wants to make power?

Pfadt can now say we got you covered. Introducing our new line of
Pfadt Power Products



Kicking off our new product line is the all new and 100% completely Pfadt-designed and manufactured

Corvette TRI-Y Equal-Length Long Tube 1.75/2" Header system



Here are the lowest prices you will find on these systems:

Complete Package with Mid-Pipe, O2 Sensor Extenders, Gaskets, Flange Bolts:

1150030 - C6Z (LS7 & LS9) System with catalytic converters - $1890

1150031 - C6Z (LS7 & LS9) System without Catalytic converters $1650

GO HERE for DETAILS: http://www.pfadtracing.com/catalog/p...roducts_id/280

1150032 - 2009+ Base (LS3) System with catalytic converters$1890

1150033 - 2009+ Base (LS3) System without catalytic converters$1650

GO HERE for DETAILS: http://www.pfadtracing.com/catalog/p...roducts_id/281



Pfadt Race Engineering is taking its expertise in manufacturing well-engineered high performance suspension components and implementing it in a new breakthrough Tri-Y header design for C6 Corvettes! Immediately setting itself out from the pack, the headers feature what you have come to expect from Pfadt: motorsports design technology in a street-performance Corvette product. The Pfadt design takes proper exhaust flow to a new level by pairing non-adjacent cylinders together to create a super-scavenging effect with the 4-into-2-into-1 (Tri-Y) construction. In this system, the exhaust flow from individual cylinder pulses are optimized to suck air into the combustion chamber from the intake. This creates a much more efficient power curve that results in a greater amount of usable torque (called torque under the curve) in the mid-range, while not sacrificing any top-end power for peak numbers. Take a look at the highlights below:

• 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
• Extra bung for wideband O2 tuning included in all kits
• 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

LS3 Engine Dyno Graph vs. Pfadt Headers


LS3 vs. 1.875" 4-into-1 vs 1.75"/2" Pfadt Tri-Ys


LS7 Head/Cam/Intake Package


LS9 Stock vs. Pfadt Headers





Be sure to read all about the details of our development we published here on CF:

We broke it up into 5 components:

• Initial Analysis and Dyno Verification
• CAD and Packaging
• Jig Design
• Part Production
• Mid pipe spotlight!

tigertank

on a 2012 Z will the headers with cats bolt up to stock x pipe?

RFZ

can you install a wideband bung on the headers before shipping?

Pfadt Racing

Yes sir! !

EDIT: Sorry I read this too fast and thought you meant stock over axle. The cats are on the mid-pipe, and there are power gains with the Pfadt mid-pipe so no reason to use a stock mid-pipe. You want to use ours with our headers. Our headers will not bolt to stock x pipe.

Pfadt Racing

Yes, because that is already a feature we add in on every single header kit! The extra bung is already there for you.

tigertank

heheheheheh u said bung!!!! yes i have teenage boys can u tell lol

Unreal

You sure about that? How would a v-band bolt to the factory x-pipe. Looks like you need to use the supplied x-pipe which would bolt to the factory mufflers.

troy6166

What could I expect above and beyond LG 1 3/4" super pros w/X pipes? It's a head/cam/intake LS7 w/11.8 compression. Tks, TR

Pfadt Racing

sorry read that pretty fast, thought he meant stock over-axle since the cats are already on the mid-pipe unlike the stock exhaust.

There is no reason to use the stock mid-pipe since you lose power with that. You want to use our x-pipe with the x in the appropriate location to make the most power. So yes, you have to use our X pipe to get the performance gain and it bolts to a stock over-axle.

Pfadt Racing

TR, we won't be able to make any claims on your specific set up compared to another competitor's headers. We simply can not test every single combination of parts, but we CAN point you to the dyno chart above that shows what is left on the table with a traditional 4-into-1 design, compared to our Pfadt Tri-Ys. This comparison is going to be an accurate range for ALL LS-series engines because the Tri-Ys are designed to exploit gains in LS-Series engine architecture across the board.

tigertank

roger that thats what i meant t bolt up to over axle duh shud reread my post lol

Pfadt Racing

No problem at all. That is what I figured you meant either way. But glad we could help!

Pfadt Racing

Just got a question in another thread from JimmyZ, wanted to post here because it is relevant info.

Hi Jimmy!

Our system is 1.75/2". You kind of have to throw out traditional (4 into 1) thinking when it comes to Tri-Y headers. We found that using a 1.75"/2" setup kept the port velocities up higher since they are matched to the LS head port sizes a bit better than 1.875/2". The bottom line is with a Tri-Y design, you will make more power with a quarter inch step to the secondaries. We did testing on both setups and the clear winner was the 1.75/2" design. Anytime you expand flow, the potential is there to slow it down. Slowing down exhaust flow (generally speaking) has negative impacts on making the most power. The Tri-Y design gets it's advantages by expanding the volume of flow appropriately over the correct diameters and tube lengths. That keeps the velocities up and the scavenging effect high. The scavenging effect will essentially allow more air and fuel to be sucked into the combustion chamber while the intake valve(s) are open, and creates more power potential. This is where the 4-into-1 falls short because those designs typically just dump all 4 primaries into a much larger tube which can slow down the overall flow of the exhaust gas and reduce any scavenging effect that was present.

As you can see with testing done by a third party, when put up against the 1.875" 4-into-1 headers, our 1.75/2" stepped Tri-Y leaves nothing on the table. Hope that helps explain why though.

Pfadt Racing

Hey guys wanted to clear something up. Got a bunch of PMs asking about how to get the pricing listed in our thread above. We offer the pricing listed to CF members ONLY, so give us a ring if you want to order these headers. In the meantime, if you use

discount code: CFMAP

on an internet order of any header kit, you will get the pricing listed above during checkout!!!

Pfadt Racing

just another detail shot of the v-band pieces and overall brushed stainless finish.

Pfadt Racing

RichS made an additional 52 HP and 60 lb-ft of torque on his East Coast Supercharging blown LS3. Even more impressive, was the fact he made +100 lb-ft at 4000 RPM! Congrats to Rich for those awesome numbers coming from Pfadt Race Engineering Try-Y headers!

Before


After

double06

Or is this a comparisson over factory manifolds?

Pfadt Racing

comparison to factory manifolds. We make power over traditional 4-into-1s for sure, but 60 lb-ft is over factory. Check the thread:

http://forums.corvetteforum.com/c6-f...t-headers.html

Pfadt Racing

bump for pricing update!