Headers for a C5 Z06
Thread Starter
Heel & Toe
Joined: Oct 2008
Posts: 23
Likes: 0
Headers for a C5 Z06
After having considered the pros and cons of short tube and long tube headers I have decided to go short tube, ceramic coated. Anyone familiar with Doug's short tube headers? Are there any others I should consider?
D
D
Race Director
Joined: Jan 2006
Posts: 10,554
Likes: 33
From: Not on either liberal coast.
B&B HEADERS (Billy Boat in AZ) are usually at the top of the list, but they're not inexpensive. They are CARB compliant for all states though. Find them under bbexhaust.com
BBK HEADERS is another option. I think they are also CARB complaint. I don't know if DOUG'S HEADERS are or not.
BBK HEADERS is another option. I think they are also CARB complaint. I don't know if DOUG'S HEADERS are or not.
Burning Brakes
Joined: Aug 2004
Posts: 783
Likes: 0
From: Phoenix Arizona
I am sorry, but unless you have too go with Long tubes. Shortys are not worth the price, very little performance gain.
Le Mans Master
Joined: Oct 2004
Posts: 9,369
Likes: 4
From: Zephyrhills, Florida
St. Jude Donor '06-'07-'08-'09-'10-'11-'12-'13
Burning Brakes
Joined: Aug 2004
Posts: 783
Likes: 0
From: Phoenix Arizona
Team Owner
Joined: May 2001
Posts: 87,315
Likes: 1,585
From: Western NY
If the port openings in the headers, ANY headers, truly are sized the same as the ports on the heads, you most likely will see a HP gain over the OE manifolds. Let me explain.
Last month, I did the Comp Cam rocker arm upgrade on my '01 coupe. Just for grins, while I had the car partially apart, I pulled the exhaust manifolds are looked at the ports, comparing them to the ports in the heads, as well as the openings in the gaskets.
Like most GM mainfolds I've seen in the past, the exhaust manifolds on my car had excess metal in the flow path, especially on the 4 "end" ports, obviously causing a flow restriction. I took a die grinder and removed the metal that overlapped into the port, and reinstalled the manifolds. Removing this restriction probably would give me, even with stock manifolds, a 5-6 HP gain....
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Thread Starter
Heel & Toe
Joined: Oct 2008
Posts: 23
Likes: 0
I am looking at the shorties for the reason you mentioned. We have emissions tests on cars here every two years so no pass ... no drive.
We also have some road clearance issues and the last time I put long tubes on there were some places I could just not go.
D
We also have some road clearance issues and the last time I put long tubes on there were some places I could just not go.
D
Burning Brakes
Joined: Jun 2010
Posts: 812
Likes: 2
From: Metairie Louisiana
Just my $0.02 worth....
If the port openings in the headers, ANY headers, truly are sized the same as the ports on the heads, you most likely will see a HP gain over the OE manifolds. Let me explain.
Last month, I did the Comp Cam rocker arm upgrade on my '01 coupe. Just for grins, while I had the car partially apart, I pulled the exhaust manifolds are looked at the ports, comparing them to the ports in the heads, as well as the openings in the gaskets.
Like most GM mainfolds I've seen in the past, the exhaust manifolds on my car had excess metal in the flow path, especially on the 4 "end" ports, obviously causing a flow restriction. I took a die grinder and removed the metal that overlapped into the port, and reinstalled the manifolds. Removing this restriction probably would give me, even with stock manifolds, a 5-6 HP gain....
If the port openings in the headers, ANY headers, truly are sized the same as the ports on the heads, you most likely will see a HP gain over the OE manifolds. Let me explain.
Last month, I did the Comp Cam rocker arm upgrade on my '01 coupe. Just for grins, while I had the car partially apart, I pulled the exhaust manifolds are looked at the ports, comparing them to the ports in the heads, as well as the openings in the gaskets.
Like most GM mainfolds I've seen in the past, the exhaust manifolds on my car had excess metal in the flow path, especially on the 4 "end" ports, obviously causing a flow restriction. I took a die grinder and removed the metal that overlapped into the port, and reinstalled the manifolds. Removing this restriction probably would give me, even with stock manifolds, a 5-6 HP gain....
Team Owner
Joined: Mar 1999
Posts: 22,025
Likes: 192
From: At the beach in little Rhody
Not sure where you are located, but most states do. You can still pass depending on the thoroughness of the inspection. Some states only read the computer for codes while others have visual inspections.
Instructor
Joined: Apr 2010
Posts: 165
Likes: 7
From: Newmarket
I just installed my LG street series headers. Cant believe how easy they went in it took me 20 minutes tops for both of them. The hardest part is the spark plugs and o2 sensor wiring. No reason to buy shortys when you can get 2x+ more hp. Dont be afraid of the install its easy they go right in. DO NOT attempt the install by yourself or it will be tough!
Team Owner
Joined: May 2001
Posts: 87,315
Likes: 1,585
From: Western NY
I understand that completely. What I was getting at, was the "long tubers" ALWAYS poo-poo the possibility of any gains with "shorties". My point was if the shorties were done correctly, with no restriction at the flanges, there was certainly a gain over the OE manifolds, which most likely have the same issues with casting flash that my manifolds had.
Racer
Joined: Mar 2010
Posts: 330
Likes: 0
From: Houston Tx
DO they do a visual inspection? They are supposed t oand some shops do but not most. As long as they dont do the visual you will pass with the right tune.
