Conversions & Swaps LSX Engines in Non-LSX Vehicles
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Exhaust setup

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Old Nov 5, 2009 | 08:34 PM
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Default Exhaust setup

I've almost finished my swap and will be taking it to get the exhaust done soon.


The headers that I am using have a 3" collector, and my car is best suited for a single pipe out the back. So here are the options that I'm considering.

1) Headers -> Two 3" cats -> Y ->3.5" pipe w/ single Muffler

2) Headers -> Two 3" cats -> Y ->3" pipe w/ single Muffler

3) Headers -> Y -> 3.5" cat -> 3.5" pipe w/ single muffler

4) Headers -> Y -> 3" cat -> 3" pipe w/ single muffler

Any thoughts on which route would be the best? My engine is a Camaro LS1, with a TR227 cam and stock heads.
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Old Nov 5, 2009 | 09:22 PM
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You should check to see what way performance exhaust for the f-bodys run. I THINK they run the cats on the end of the manifolds then Y into a singe pipe back to the muffler where it is split back into 2. So a performance exhaust system for an F-body *should* be a good reference for the size pipes that will work with the engine package.
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Old Dec 30, 2009 | 10:36 PM
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Following up with this thread, the headers I tried wouldn't fit in my car, so I'm using the C6 corvette manifolds. Since they have a 2.5" outlet, I was planning on running the two 2.5" pipes into a 3.5" single pipe.

Do any of you have a recommendation on which mufflers sound good on a single pipe LSx engine? Or maybe some audio clips of a similar setup?
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Old Jan 2, 2010 | 12:20 PM
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What is the engine installed in?

What's the compression ratio?

Are you planning mufflers at the back of the car or in the center?
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