Stainless headers
Thread Starter
Melting Slicks
Joined: Oct 2007
Posts: 2,310
Likes: 9
From: KB7TIF Ville NV
Stainless headers
Anybody have these?http://www.stainlessworks.net/chevy-...6-headers.html
Last edited by illenema; Apr 21, 2012 at 02:11 PM.
Le Mans Master
Joined: Mar 2001
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From: Life is just one big track event. Everything before and after is prep and warm-up and cool-down laps
Cruise-In III Veteran
Cruise-In IV Veteran
St. Jude Donor '12
Yep, I do. What would you like to know?
Race Director
Joined: Sep 2001
Posts: 14,665
Likes: 749
From: NEwhere Ohio
Those are 1 5/8" primaries..That means the inner tube diameter is 1 1/2".
Meanwhile, 1 7/8" is the new norm for LSx motors with many 2" header designs also available.
Ive heard you (illenema) talk about going forced induction. Keep in mind, if you go forced induction it is absolutely critical to have your exhaust back pressure to a minimum so that the supercharger wont be fighting the exhaust backpressure during that cam overlap phase (which hopefully the cam you use will have a 114+ LSA 'blower cam' to keep that cam overlap phase to a minimum).
Ex. if your blower makes 10 psi and your exhaust has 5 psi of backpressure, then you are only shoving 5 psi of boost into the cylinders during the overlap phase.
For a N/A motor these are fine, especially for low end L98 TQ machines. FI, Id personally go 1 3/4" +
ARH makes a great set of stepped headers.
Meanwhile, 1 7/8" is the new norm for LSx motors with many 2" header designs also available.
Ive heard you (illenema) talk about going forced induction. Keep in mind, if you go forced induction it is absolutely critical to have your exhaust back pressure to a minimum so that the supercharger wont be fighting the exhaust backpressure during that cam overlap phase (which hopefully the cam you use will have a 114+ LSA 'blower cam' to keep that cam overlap phase to a minimum).
Ex. if your blower makes 10 psi and your exhaust has 5 psi of backpressure, then you are only shoving 5 psi of boost into the cylinders during the overlap phase.
For a N/A motor these are fine, especially for low end L98 TQ machines. FI, Id personally go 1 3/4" +
ARH makes a great set of stepped headers.
Thread Starter
Melting Slicks
Joined: Oct 2007
Posts: 2,310
Likes: 9
From: KB7TIF Ville NV
Thanks for the information, and yes I am going with Boost and plenty of it.
The stock motor is very healthy, and this will be a weekend only driver so I am doing it correct the first time.
The stock motor is very healthy, and this will be a weekend only driver so I am doing it correct the first time.
Last edited by illenema; Apr 11, 2012 at 09:03 PM.
Thread Starter
Melting Slicks
Joined: Oct 2007
Posts: 2,310
Likes: 9
From: KB7TIF Ville NV
Those are 1 5/8" primaries..That means the inner tube diameter is 1 1/2".
Meanwhile, 1 7/8" is the new norm for LSx motors with many 2" header designs also available.
Ive heard you (illenema) talk about going forced induction. Keep in mind, if you go forced induction it is absolutely critical to have your exhaust back pressure to a minimum so that the supercharger wont be fighting the exhaust backpressure during that cam overlap phase (which hopefully the cam you use will have a 114+ LSA 'blower cam' to keep that cam overlap phase to a minimum).
Ex. if your blower makes 10 psi and your exhaust has 5 psi of backpressure, then you are only shoving 5 psi of boost into the cylinders during the overlap phase.
For a N/A motor these are fine, especially for low end L98 TQ machines. FI, Id personally go 1 3/4" +
ARH makes a great set of stepped headers.
Meanwhile, 1 7/8" is the new norm for LSx motors with many 2" header designs also available.
Ive heard you (illenema) talk about going forced induction. Keep in mind, if you go forced induction it is absolutely critical to have your exhaust back pressure to a minimum so that the supercharger wont be fighting the exhaust backpressure during that cam overlap phase (which hopefully the cam you use will have a 114+ LSA 'blower cam' to keep that cam overlap phase to a minimum).
Ex. if your blower makes 10 psi and your exhaust has 5 psi of backpressure, then you are only shoving 5 psi of boost into the cylinders during the overlap phase.
For a N/A motor these are fine, especially for low end L98 TQ machines. FI, Id personally go 1 3/4" +
ARH makes a great set of stepped headers.
I am seriously considering a muffer less system. ( I ran this car right out of the cats for a while and nothing else compares
)I now have the OBX system on there and it so quiet it sounds like something is clogged up. Even though the mufflers are straight open as well as the resonator.
On my Z I was running watsons and borlas and it was how I like it.
I might get the cheapo OBX headers and run straight out of there, i will see.
Le Mans Master
Joined: Nov 2009
Posts: 6,882
Likes: 234
From: Bangkok, Thailand
I'd be a lot more concerned about the 14.7 psi of backpressure that ambient air provides at sea level. People always forget about that, but that is one of the best features about Flowmasters - they do the most to keep that external backpressure out of your exhaust system.
That said, remember that the exhasut valve diameter and the port flow/diameter is the choke point if you go to headers that are larger than 1 5/8". Better make sure you build it strong to handle "lots of boost". That means a 4-bolt main block, forged crank/rods/pistons, and heads that will flow enough that you're not wasting all that boost.
That said, remember that the exhasut valve diameter and the port flow/diameter is the choke point if you go to headers that are larger than 1 5/8". Better make sure you build it strong to handle "lots of boost". That means a 4-bolt main block, forged crank/rods/pistons, and heads that will flow enough that you're not wasting all that boost.
Safety Car
Joined: Feb 2000
Posts: 3,771
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From: MANDEVILLE, LA La
OBX Headers
http://www.ebay.com/itm/OBX-Header-E...94188503104831
Stainless Works Knock Offs much less $$$$
Excellent Quality
Stainless Works Knock Offs much less $$$$
Excellent Quality
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Last edited by CAJUN C4; Apr 21, 2012 at 11:38 AM.
Thread Starter
Melting Slicks
Joined: Oct 2007
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From: KB7TIF Ville NV
Melting Slicks
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From: Franklin IN
Safety Car
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From: MANDEVILLE, LA La
