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

Difference between 85 and 86 Exhaust?

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Old Aug 1, 2006 | 08:34 PM
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Default Difference between 85 and 86 Exhaust?

There's a magnaflow exhaust for sale on the forum for n 86. I'm interested in it but I have a 85. What would it take to make it fit? Large scale operation or just a little garage engineering? Thanks in advance for the info. I know someone around here has done this probably a couple dozen times.
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Old Aug 1, 2006 | 08:43 PM
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The cat connection is completely different.

You'd need an 86-91 front Y pipe, an 86-91 cat... then you could fit that magnaflow system.
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Old Aug 1, 2006 | 09:02 PM
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I took a look at the exhaust in question. It should work and I'm sure a muffler shop could fabricate it on for you. Do a little research on the web at at popular corvette item sites. You might find the right answer.
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Old Aug 1, 2006 | 09:31 PM
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An exhaust shop should be able to weld it right up for you, but the difference is the main cat.

One is slip-fit, other is bolt-in.
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Old Aug 2, 2006 | 01:12 AM
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As always, you all are a wealth of information. I appreciate it.
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Old Aug 2, 2006 | 06:24 PM
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My 85 has a 4 bolt flange to the cat. The 86's have a bell end to the cat with slip flange.
Bill
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