C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Walker rear y-pipe crossover diameter?

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Old Sep 11, 2004 | 06:48 PM
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Default Walker rear y-pipe crossover diameter?

Does anyone know the diameter of the crossover pipe on the walker rear y-pipe for the 84-91 l98? I'm thinking that it might be the perfect place to put an exhuast cutout on my 91 vert.

Thanks!
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Old Sep 11, 2004 | 07:47 PM
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The dynomax one is 2.5" but they may make different versions.
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Old Sep 11, 2004 | 07:59 PM
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Originally Posted by cj91vette
Does anyone know the diameter of the crossover pipe on the walker rear y-pipe for the 84-91 l98? I'm thinking that it might be the perfect place to put an exhuast cutout on my 91 vert.

Thanks!
I could be mistaken, but I believe the Dynomax/Walker rear y-pipes are 2.25" diameter.
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Old Sep 11, 2004 | 09:55 PM
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What I'm looking for is the diameter of the short crossover pipe that is supposed to reduce the resonance. It's the little pipe that joins the driver and passenger side.

Thanks!!!!
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Old Sep 11, 2004 | 11:52 PM
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Went out to shed and measured mine. The Y-pipe is 2.25 in and the balance tube is just over 2 inches outside diameter. Hope that helps you.
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Old Sep 12, 2004 | 07:56 AM
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Thanks for the help! This forum is great!
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