304 ss or 409 ss catback - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

rocknrohl · 08-31-2011, 07:37 PM

Looking to replace my factory exhaust with a catback but not sure if I really need the 304 ss since nobody will be seeing it. When it comes time for headers I'll get the 304. What are the opinions from camaro5 guys. Thanks a lot

Pollock · 08-31-2011, 07:39 PM

Neither will rust. Buy what you like.

JANNETTYRACING · 08-31-2011, 07:43 PM

Quote:

Originally Posted by Pollock

Neither will rust. Buy what you like.

Actually 409 Does Rust and turn brown but will outlast mild steel 3 to 1.

304 Will Not rust and if it does it is not real 304 beware of Chinese 304 is Rusts.

Ted.

MarylandSpeed · 08-31-2011, 09:06 PM

What was posted above is correct. The stock stuff is actually 409 stainless. That is why I am always amazed when somone replaces their stainless stock exhaust with something mild steel.

rocknrohl · 09-01-2011, 06:24 AM

But does it matter if the exhaust is 304 or 409. The car only gets driven in nice weather not even rain.
Thanks for the replies.

JANNETTYRACING · 09-01-2011, 07:49 AM

Quote:

Originally Posted by rocknrohl

But does it matter if the exhaust is 304 or 409. The car only gets driven in nice weather not even rain.
Thanks for the replies.

It only matters to you and how you will use your car and what you feel is appropriate for a 40K car.

Ted.

08-31-2011, 07:37 PM	#1
rocknrohl Drives: Suburban/ RY 2SS/RS Join Date: Oct 2009 Location: Madison, Ohio Posts: 43	304 ss or 409 ss catback Looking to replace my factory exhaust with a catback but not sure if I really need the 304 ss since nobody will be seeing it. When it comes time for headers I'll get the 304. What are the opinions from camaro5 guys. Thanks a lot

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08-31-2011, 07:39 PM	#2
Pollock LT4 M6 Drives: 2018 ZL1 1LE Join Date: Nov 2010 Location: Bloomington, IN Posts: 1,249	Neither will rust. Buy what you like.

08-31-2011, 09:06 PM	#4
MarylandSpeed Account Suspended Drives: 2012 ZL1 & 2010 2SS/RS Join Date: Jul 2009 Location: Maryland Posts: 3,378	What was posted above is correct. The stock stuff is actually 409 stainless. That is why I am always amazed when somone replaces their stainless stock exhaust with something mild steel.

09-01-2011, 06:24 AM	#5
rocknrohl Drives: Suburban/ RY 2SS/RS Join Date: Oct 2009 Location: Madison, Ohio Posts: 43	But does it matter if the exhaust is 304 or 409. The car only gets driven in nice weather not even rain. Thanks for the replies.