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Old Jan 22, 2012 | 01:11 AM
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Default 2" primary header options

I am looking for a good set of 2" primary headers. I have seen that both kooks and american racing headers make them. I am just wondering who makes the best set and why?
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Old Jan 22, 2012 | 12:43 PM
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Originally Posted by aaronj
I am looking for a good set of 2" primary headers. I have seen that both kooks and american racing headers make them. I am just wondering who makes the best set and why?
What size motor are you installing that you feel you need 2" primaries?
1-7/8 should be fine for anything up to and including a 440" motor.
1-7/8 stepped up to 2" might be a good alternative also. I know ARH makes them for Corvettes, not sure about Kooks. I do know from personal experience with ARH that they are an easy install.

Jimbo
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Old Jan 22, 2012 | 01:04 PM
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You already have LG pros which are great headers! I don't understand why you would want to spent the $$$ on 2" headers when you will see very little to no hp gain, you will also lose bottom end torque!

Can you share with us why you want or need 2" headers.
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Old Jan 22, 2012 | 01:34 PM
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I run 2" headers on and Fbody. I have 457 cubic inches though and need them. ARH was the best fitting header I used and I ran Kooks SW and ARH.

The Vette is a little different but the headers are going to be of the same quality. You wont go wrong with ARH, Kooks, LG Motorsports, or SW IMO... ARH was offering a better collector by default where I think you had to pay for the upgrade from some of the others but I think they all offer the same now as a standard. I dont see 2" listed on LG's. I know ARH will make 2" or anything a person wants. We can help you with them if you like. Why do you want 2" ?
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Old Jan 22, 2012 | 05:15 PM
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Would you like to donate your LGs to me if you go the 2" route?
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Old Jan 22, 2012 | 09:45 PM
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Well i am planning an engine swap. I am going to do a sleeved ls2 that is at least 454ci, so i figure that 2" headers would work the best.
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Old Jan 24, 2012 | 06:40 AM
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2" with 3.5" collectors are what I run
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Old Jan 24, 2012 | 08:55 AM
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Originally Posted by 99blancoss
2" with 3.5" collectors are what I run
Those are ARH? I think that will be the route that i go.
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Old Jan 24, 2012 | 09:09 AM
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FWIW, a link to my 2" Kooks headers in the C5
http://forums.corvetteforum.com/c5-t...e-headers.html

Link to more header fit pics
http://forums.corvetteforum.com/phot...y.php/cat/1572

PM me if ya got questions......
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Old Jan 24, 2012 | 10:47 AM
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awesome, thanks for the info.
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Old Jan 24, 2012 | 11:18 AM
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Yes they are. I ran Kooks and switched to ARH. Let me know if you want ARH I can set you up with them
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Old Jan 24, 2012 | 02:44 PM
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I have been using the ARH 2" headers for 3-4 years now, very nice set up.
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Old Jan 24, 2012 | 06:08 PM
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I'm getting a LSX 440 from Vengence and they recommended 2" but I'm also shooting it 300-400 with gas. I went with Kook's and had them coated with Jet Hot. I'm luckey as I will put them on THEN install my engine......
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Old Jan 24, 2012 | 10:36 PM
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Thanks everyone for the replys. Do any of you have pictures of how they fit?
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Old Jan 25, 2012 | 05:57 AM
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Originally Posted by aaronj
Do any of you have pictures of how they fit?
post #9.......scroll through the pages of pics.
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Old Jan 25, 2012 | 06:48 AM
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Thanks, those are good pics, i should have been more clear, do any of you have pictures of the ARH's. I think it will be a toss up either way(kooks/ARH). I just dont want to have to do anything crazy to get them to fit like removing the a/c, etc. Also i am assuming that you have to delete the A.I.R. system correct? Thanks again for the help guys!
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Old Jan 25, 2012 | 09:00 AM
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I have a set of ARH that are ceramic coated that I would be willing to sell. Send me a pm if interested.
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