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Old 06-05-2018, 10:01 PM   #1
P1100
 
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Why are ZL1 manifolds and cats so expensive?

Did a search but could find an answer. Looked at approximate prices through GM Parts Online.

LS3

1 Manifold: $190
1 cat pipe: $550

LSA

1 manifold: $550
1 catalytic pipe: $850

I imagine that the ZL1 uses different material to withstand LSA temperatures but is there also something different inside the catalytic pipe?
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Old 06-05-2018, 10:02 PM   #2
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It’s a ZL1. Same goes for buying Z28 parts or Corvette parts...
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Old 06-05-2018, 10:23 PM   #3
Welker2
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Quote:
Originally Posted by Wizard1183 View Post
It’s a ZL1. Same goes for buying Z28 parts or Corvette parts...
Agree … with our Corvettes, we call it the 'Corvette tax', same holds true for the ZL1 & Z28.
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Old 06-05-2018, 11:07 PM   #4
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Not sure about the cats, but SS exhaust manifolds are cast iron and the ZL1 manifolds are steel.
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Old 06-06-2018, 05:17 AM   #5
pyroguy
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Not sure about the manifolds, but I'd imagine the cats are more expensive because they can withstand added torture from boost.
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Old 06-06-2018, 09:31 AM   #6
Moto-Mojo
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Be glad it's not a boat or airplane. Marine and Aviation "tax" is worse!
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Old 06-06-2018, 09:55 PM   #7
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Sounds like a combo, tax because why not and likely some different internal design to withstand increased pressure.
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Old 06-07-2018, 08:39 PM   #8
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the ZL1 parts are stainless steel
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Old 06-08-2018, 08:34 AM   #9
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You can always go with Solo cats, I've been running them for years and hold up fine at 625hp so stock will be no issues.
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Old 06-08-2018, 10:05 AM   #10
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i have a few sets if anyone is looking
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Old 06-08-2018, 12:50 PM   #11
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I bought a set, really for the manifold but wondering if I should use the cats as well?

Will keep stock ones if the internals are the same.
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