My catless Pfadt's and straight pipe borlas are insane. Cant even start it at night 
Stock '02 Z06 headers. How good?
Thread Starter
Instructor
Joined: Nov 2005
Posts: 101
Likes: 0
From: Garden City Kansas
Stock '02 Z06 headers. How good?
Just wondering if the z's stock headers are considered good, with regard to air flow? Any reason to upgrade the headers while doing the exhaust?
Melting Slicks
Joined: Jun 2012
Posts: 3,163
Likes: 6
From: Oceanside California
If doing the exhaust for sound and the look out back, dont mess with the headers. If big power in the form of FI or a heads and cam build are in mind in the future, you will need a better system. Long tubes themselves are a great way to add power. Depends on what you're after.
Melting Slicks
Joined: Jun 2012
Posts: 3,163
Likes: 6
From: Oceanside California
Tech Contributor
Joined: Dec 1999
Posts: 32,910
Likes: 2,402
From: Anthony TX
CI 6,7,8,9,11 Vet
St. Jude Donor '08
If you decide to swap in C5 ZO6 manifolds, you will also most likely need the mid pipe also. an early C5 LS1 pipe wont fit the Z manifolds
The Oil Dip Stick is also different as is the mountig of the A.I.R. Flange on the passengers side.
BC
The Oil Dip Stick is also different as is the mountig of the A.I.R. Flange on the passengers side.
BC
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Le Mans Master
Joined: Dec 2005
Posts: 8,475
Likes: 332
From: Port Arthur, Texas 77642
Here is some testing done by Car Craft Magazine.
http://www.carcraft.com/techarticles...t/viewall.html
This off road X connects to factory pipes to eliminate cats. More sound and performance from your current system. With a canned tune, CAI and this X pipe I put down 336 rwhp on stock engine. Added new set of long tubes with dyno tune and gained an additional 8 rwhp.
http://www.breathlessperformance.com...&productId=879
http://www.carcraft.com/techarticles...t/viewall.html
This off road X connects to factory pipes to eliminate cats. More sound and performance from your current system. With a canned tune, CAI and this X pipe I put down 336 rwhp on stock engine. Added new set of long tubes with dyno tune and gained an additional 8 rwhp.
http://www.breathlessperformance.com...&productId=879
Le Mans Master
Joined: Dec 2005
Posts: 8,475
Likes: 332
From: Port Arthur, Texas 77642
"The 26-pound titanium muffler and tailpipe assembly of the Z06 replaced the 44-pound stainless steel system used in the base-model C5. Titanium has a natural oxide layer that provides immunity to external corrosion from road salts, as well as to internal corrosion from sulfur-rich engine exhaust. Although common in 2010, titanium exhausts were very rare when the Corvette Z06 was developed in 2001. At that time the manufacturing technology to produce titanium mufflers in mass-market quantities didn't exist. Working with TIMET to optimize an exhaust grade of titanium, ArvinMeritor, the manufacturer of the GM system, adapted its stainless steel stamping, bending, cold forming and welding methods to accommodate the structural differences between stainless steel and titanium."
Drifting
Joined: Apr 2009
Posts: 1,898
Likes: 10
From: Morrisville PA
The LS7 exhaust manifolds are a great, cheap alternative to headers. I have been running them and the 3" h-pipe on my c5 for over a year. It will pickup power over the stock c5z stuff. Good alternative if you don't wanna spend 4x the price for headers. Headers will shine much more with an aftermarket cam.
Mine are coming off in a couple weeks. I'll be selling the whole setup for around $400, manifolds, cats, 3" h-pipe, adapted down to 2.5" at the end to fit the stock mufflers.
Over your stock c5 stuff, it will be a 20+ rwhp gain, more with a tune to go with it.
Mine are coming off in a couple weeks. I'll be selling the whole setup for around $400, manifolds, cats, 3" h-pipe, adapted down to 2.5" at the end to fit the stock mufflers.
Over your stock c5 stuff, it will be a 20+ rwhp gain, more with a tune to go with it.
Last edited by mchicia1; Feb 18, 2014 at 10:11 PM.
Tech Contributor
Joined: Dec 1999
Posts: 32,910
Likes: 2,402
From: Anthony TX
CI 6,7,8,9,11 Vet
St. Jude Donor '08
Man,, you lucked out. I bet if mchicia1 took pictures of his install, you would want it for your car. The LS7 setUp is the next best thing to headers and its STOCK!
Bill
Drifting
Joined: Apr 2009
Posts: 1,898
Likes: 10
From: Morrisville PA
This guy did an awesome writeup on installing these in a c5. Mine are already adapted and ground in the correct places. The only issue I saw was the rear 02 on the driver's side might have had a clearance issue. Not that I care, because I don't run them. Rear 02s aren't really necessary, they don't have any bearing on fueling.
We installed these on my Dad's car as well and he had no issues with fitment anywhere though. I tuned it right after I installed them and it went from dead hooking 1st with the stock exhaust to absolutely shredding the tires with the ls7.
Matt even took the time to weld in air tubes to keep it really factory looking. I am sure this wouldn't be too difficult to do, but I just ripped that air stuff out lol.
http://forums.corvetteforum.com/1583203755-post1.html
Racer
Joined: Nov 2012
Posts: 354
Likes: 10
From: Virginia
This off road X connects to factory pipes to eliminate cats. More sound and performance from your current system. With a canned tune, CAI and this X pipe I put down 336 rwhp on stock engine. Added new set of long tubes with dyno tune and gained an additional 8 rwhp.
http://www.breathlessperformance.com...&productId=879
http://www.breathlessperformance.com...&productId=879
Le Mans Master
Joined: Dec 2005
Posts: 8,475
Likes: 332
From: Port Arthur, Texas 77642
Stock pipe needs to be cut to replace cat section. Slip fit but I welded mine. It was over 10 years ago when I did my car so cannot vouch on fitment of this part as it may be sourced from another fabricator. Call Breathless and ask for most current information.