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Will aftermarket y-pipe bolt up with stock exhaust?

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Old 08-06-2015 | 03:17 PM
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Default Will aftermarket y-pipe bolt up with stock exhaust?

This is a pretty dumb question, but say I have some headers and a y-pipe I want to install, but still have my stock exhaust on (2002 z28) - will all aftermarket y-pipes be too large of a diameter to fit to my stock cat back?

Thank You!
Old 08-06-2015 | 03:27 PM
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im not sure what youre asking but SLP has a y pipe designed for stock ls1 fbody exhaust systems.
Old 08-06-2015 | 03:37 PM
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Your y pipe should work, read post #9
https://ls1tech.com/forums/chevrolet...l#post18902942

Last edited by 98CayenneT/A; 08-06-2015 at 03:44 PM.
Old 08-09-2015 | 11:24 PM
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Originally Posted by ULTIMATEORANGESS
im not sure what youre asking but SLP has a y pipe designed for stock ls1 fbody exhaust systems.
I thought aftermarket y-pipes would be larger in diameter than the stock exhaust, so it wouldn't flow correctly or something
Old 08-09-2015 | 11:24 PM
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Originally Posted by 98CayenneT/A
Your y pipe should work, read post #9
https://ls1tech.com/forums/chevrolet...l#post18902942

thank you!
Old 08-09-2015 | 11:28 PM
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The I pipe is 2.75 in. and should work with a 3 in. ory.
I run Lt's into a 3 in. ory into stock cat back
Your outlet of your ory will drop to 2.5 inside dia. Making the outside 2.75 in.
2.75 in. is the inside diameter of the stock I pipe and will slide over the outlet of your 3in. ory


This answered my question



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