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Old Nov 7, 2017 | 04:23 PM
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Default LS9 headers

I have a question. If anyone could help I️ would appreciate it. A friend of mine is selling a used set of American racing headers for an LS9. I have a LS7 will they fit? I️ see that they part numbers are different. Just wondering if anyone has tried. Thank you
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Old Nov 7, 2017 | 04:48 PM
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My guess is if they are different part numbers, they are different and will not interchange, otherwise, they would specify that they would fit both.
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Old Nov 7, 2017 | 04:55 PM
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I figured the same thing. Was wondering if anyone tried to see if they would fit.
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Old Nov 7, 2017 | 04:55 PM
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I really wish someone with experience would develop a master list of what headers fit what. Isn't the Ls9 just a supercharged Ls3, and don't LS3 headers fit the Ls7? It's all very confusing for me and I've never seen a cross-reference
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Old Nov 7, 2017 | 05:33 PM
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Originally Posted by Mbutters
I have a question. If anyone could help I️ would appreciate it. A friend of mine is selling a used set of American racing headers for an LS9. I have a LS7 will they fit? I️ see that they part numbers are different. Just wondering if anyone has tried. Thank you
Why not call ARH & ask them? 631-608-1986

Last edited by 449er; Nov 7, 2017 at 05:36 PM.
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Old Nov 7, 2017 | 05:48 PM
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I just called them and they said no. The flanges are what is different. Thanks for all the help.
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