Which Headers for a 10' LS3?
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Joined: Feb 2011
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From: Charleston SC
Which Headers for a 10' LS3?
I'm looking to get a header back exhaust this week but came across a lot of different information.
Looking for some clarification on if my LS3 should receive a 1 3/4" or 1 7/8"? If I go 1 7/8" should I just keep it 3" all the way back or will the drop from 3" to 2.5" not make enough of a difference?
Currently looking at Stainless Work's Header-Back exhaust (Link )
Looking for some clarification on if my LS3 should receive a 1 3/4" or 1 7/8"? If I go 1 7/8" should I just keep it 3" all the way back or will the drop from 3" to 2.5" not make enough of a difference?
Currently looking at Stainless Work's Header-Back exhaust (Link )
Drifting
Joined: May 2002
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From: Dallas / Ft. Worth The Republic of TEXAS
It has been well documented on the forum with the LS3 you want 1-7/8" headers with 3" all the way back to right before the catback transition to 2-1/2". That's what I'm going to use on my 10' Grand Sport 
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C6 Corvette Headers
We offer Kooks Long Tubes in both 1 3/4", 1 7/8" and a stepped design that goes from 1 3/4" to 2".
What are your plans for the car? If you plan on extensive mods go ahead with the 1 7/8" or the stepped.
Give me a call if you have any questions.
Tom 1-800-962-9632 ext 240.
We offer Kooks Long Tubes in both 1 3/4", 1 7/8" and a stepped design that goes from 1 3/4" to 2".
What are your plans for the car? If you plan on extensive mods go ahead with the 1 7/8" or the stepped.
Give me a call if you have any questions.
Tom 1-800-962-9632 ext 240.
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Melting Slicks
Joined: Sep 2005
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From: Oxnard CA
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Joined: Feb 2011
Posts: 93
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From: Charleston SC
C6 Corvette Headers
We offer Kooks Long Tubes in both 1 3/4", 1 7/8" and a stepped design that goes from 1 3/4" to 2".
What are your plans for the car? If you plan on extensive mods go ahead with the 1 7/8" or the stepped.
Give me a call if you have any questions.
Tom 1-800-962-9632 ext 240.
We offer Kooks Long Tubes in both 1 3/4", 1 7/8" and a stepped design that goes from 1 3/4" to 2".
What are your plans for the car? If you plan on extensive mods go ahead with the 1 7/8" or the stepped.
Give me a call if you have any questions.
Tom 1-800-962-9632 ext 240.
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Melting Slicks
Joined: Sep 2005
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From: Oxnard CA
Drifting
Joined: May 2002
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From: Dallas / Ft. Worth The Republic of TEXAS
Melting Slicks
Joined: Apr 1999
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From: Toms River NJ
Who makes a LT header & x-pipe that goes from 3" to 2.5" just before the axle-back? What's the purpose of using this, can it be easily converted to accommodate a 3" axle-back in the future?
Drifting
Joined: Dec 2009
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From: OH
I got a 10 MN6 GS......I'm going with the kooks 1 7/8 with a kooks z06 3in catted x and z06 borla stinger axleback.
If you keep it all z06 it will work...Get the 1 7/8 and 3in exhaust call it a day and never have to deal with it again.
The 09+ cars have a different exhaust setup where the axleback hooks up to the x pipe. So you either have to get the 09+ x pipe or keep it all z06.
Will you give up a few feet of TQ? possibly, but once you get to bigger mods they will help you out.
If you keep it all z06 it will work...Get the 1 7/8 and 3in exhaust call it a day and never have to deal with it again.
The 09+ cars have a different exhaust setup where the axleback hooks up to the x pipe. So you either have to get the 09+ x pipe or keep it all z06.
Will you give up a few feet of TQ? possibly, but once you get to bigger mods they will help you out.
Drifting
Joined: Dec 2009
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From: OH
http://marylandspeed.com/kooks-3-x-2...09-p-1800.html
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From: Charleston SC
I got a 10 MN6 GS......I'm going with the kooks 1 7/8 with a kooks z06 3in catted x and z06 borla stinger axleback.
If you keep it all z06 it will work...Get the 1 7/8 and 3in exhaust call it a day and never have to deal with it again.
The 09+ cars have a different exhaust setup where the axleback hooks up to the x pipe. So you either have to get the 09+ x pipe or keep it all z06.
Will you give up a few feet of TQ? possibly, but once you get to bigger mods they will help you out.
If you keep it all z06 it will work...Get the 1 7/8 and 3in exhaust call it a day and never have to deal with it again.
The 09+ cars have a different exhaust setup where the axleback hooks up to the x pipe. So you either have to get the 09+ x pipe or keep it all z06.
Will you give up a few feet of TQ? possibly, but once you get to bigger mods they will help you out.
Drifting
Joined: May 2002
Posts: 1,479
Likes: 42
From: Dallas / Ft. Worth The Republic of TEXAS
No he meant if you want to buy a used Z06 catback then you can use it with Z06 headers on your car, but beware if it is an auto it may be very tight back there you might rub in spots. You need 1-7/8" headers with a 3x3 center section with a neckdown at the very end to 2.5" to mate up to you stock exhaust. The 09-up uses a different center section than the 05-08' so be sure you order the right one.
Safety Car
Joined: Sep 2007
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From: Los Alamitos California
St. Jude Donor '09
It hasn't been "well documented" that 1 7/8 headers are the way to go for the LS3. I'd advise you to research twice and purchase once.
http://forums.corvetteforum.com/c6-t...d-1-7-8-a.html
San
http://forums.corvetteforum.com/c6-t...d-1-7-8-a.html
San
Drifting
Joined: May 2002
Posts: 1,479
Likes: 42
From: Dallas / Ft. Worth The Republic of TEXAS
It hasn't been "well documented" that 1 7/8 headers are the way to go for the LS3. I'd advise you to research twice and purchase once.
http://forums.corvetteforum.com/c6-t...d-1-7-8-a.html
San
http://forums.corvetteforum.com/c6-t...d-1-7-8-a.html
San
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Joined: Feb 2011
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From: Charleston SC
It hasn't been "well documented" that 1 7/8 headers are the way to go for the LS3. I'd advise you to research twice and purchase once.
http://forums.corvetteforum.com/c6-t...d-1-7-8-a.html
San
http://forums.corvetteforum.com/c6-t...d-1-7-8-a.html
San
The larger pipes were done to focus on higher end HP, which is also the reason for a shorter pipe. We also had to work within the space limiations of the car between the bellhousing and the frame with the larger pipes, which placed the collector there.
Personally,
Unless you are going forced induction the 1 3/4" is going to make more total power across the board and really focus in on torque production, which in the end is what makes the car fast.
Only in a few occasions have we used the larger pipes on an LS3 and it made any kind of difference on increasing power over the 1 3/4 systems.
Blown and bigger cube engines...it is a slightly different story but I even use the 1 3/4" on a lot of the LS7 pacakges as well.
Personally,
Unless you are going forced induction the 1 3/4" is going to make more total power across the board and really focus in on torque production, which in the end is what makes the car fast.
Only in a few occasions have we used the larger pipes on an LS3 and it made any kind of difference on increasing power over the 1 3/4 systems.
Blown and bigger cube engines...it is a slightly different story but I even use the 1 3/4" on a lot of the LS7 pacakges as well.
Think I'll just do 1 3/4 and call it a day.. The power gains are going to be nominal going to 1 7/8 and I wont be using Forced Induction.
Safety Car
Joined: Sep 2007
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From: Los Alamitos California
St. Jude Donor '09
Melting Slicks
Joined: Oct 2010
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From: Cape May, NJ; Guntersville, AL; Orange Beach, AL
If you aren't doing FI then you won't notice a difference between the 1 3/4 and the 1 7/8. I've seen a lot of FI cars that are even using the 1 3/4. I'm planning on a SC in the future but I've ordered the 1 3/4 LG superpro's with hi-flow cats. If you shop around you can get a good deal on the headers. Good luck with your choice.