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Will LS7 exhaust mani/h-pipe/catback work on LS3 (08 Corvette)

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Old 01-27-2008, 05:37 PM
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Default Will LS7 exhaust mani/h-pipe/catback work on LS3 (08 Corvette)

I haven't really seen any threads about putting the LS7 exhaust manifolds/h-pipe/cat-back on an LS3 but plenty of LS2's. Has anyone done this? I have a 2008 Corvette with no NPP exhaust. What kind of results might be expected if it will work? I thought I had heard that there are slight differences in the ports so I wasn't sure if it would work or not. Please excuse my ignorance on this if its an easy answer. Thanks
Old 01-29-2008, 10:15 PM
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you will pick up about 10-14 rwhp with the entire system. We did one not too long ago for a gentlemen looking for stock upgrade parts for his 06 car. While not an LS3, it bolts up and will have the same, if not better results
Old 06-13-2008, 05:28 PM
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Does the exhaust manifold for the LS3 have the same "efficient looking" 4 into 1 design as the manifold for the LS7?

Or is the LS3 exhaust manifold more of a traditional log were the runners are not even close to being equal length?




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