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Old Feb 6, 2008 | 09:00 PM
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Which longtube headers would make more power on an H/C 346ci? And which are better. Kooks 1 7/8ths or LG Streets? How much more power will the better one make over the over?
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Old Feb 6, 2008 | 11:40 PM
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Originally Posted by c5_ls1_6spd
Which longtube headers would make more power on an H/C 346ci? And which are better. Kooks 1 7/8ths or LG Streets? How much more power will the better one make over the over?
I personally like the American Racing headers the best. They has a nice design for the collector. Great for the scavaging.
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Old Feb 7, 2008 | 08:48 AM
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Between the two choices I'd picks the Kooks, because they have the merge (waisted) collectors to add midrange power....

The LG streets are just.... normal... a deal made with a company that I think may be TPIS just to label as their "street headers".... LG goes through Borla to make their premium headers...
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Old Feb 7, 2008 | 09:08 AM
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Get the LG Pro Longtubes. Not the lg street headers. Pros have full 32" primaries, merge collector, full 3" X pipe and really kick ***. Have seen some cars eek out a couple more peak hp running Kooks 1 7/8 but they were off on hp and torque under the curve. Besides how long do you stay at peak rpms anyways. Its all about power under the curve and LG Pro longtube headers are the way to go.
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Old Feb 7, 2008 | 10:06 AM
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We run and recommend the Kooks. Shoot me a PM for best pricing.
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Old Feb 8, 2008 | 09:12 AM
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I love my Lg pros and recommend them, but if you have plans to go F.I. later on i would recommend the Kooks 1 7/8
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Old Feb 8, 2008 | 09:25 AM
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SLP has some for the vette that are rated as tuned-headers and have seen big time numbers. I personally dont run them cuz i found out about them later, and they are about $800. As far as the 1 7/8 goes, if you are going supercharged or just have a crazy cam for the 346c.i. i would stay with the 1 3/4 header, or you'll probly be losing power.
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Old Feb 8, 2008 | 04:56 PM
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1 7/8 are only needed if your going with a blower-other than that 1 3/4 are plenty. IMHO-they all perform very close-just find one that is made from SS-as the AR, Kooks and LG's are. Also the AR are the easiest to install.
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Old Feb 8, 2008 | 11:29 PM
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LG Pro long tubes worth it
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