ZL1 cats vs SS (LS3/L99) - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

rvadim76 · 04-29-2016, 06:16 PM

Hi All,
Sorry if this has been already asked, I could not find any ultimate answer.

Apparently I discovered that I got ZL1 exhaust installed on my SS. I see it's slightly different from L99/LS3 engine (but fits well) so I am curious if these platforms share the same cats system or ZL1 differs by, let's say flow capability.

Any input would be greatly appreciated.

P.S. I personally think it would be logical if zl cats had a better flow but I am not quite confident about that.

Tks

rvadim76 · 04-29-2016, 07:37 PM

..anyone?

rvadim76 · 04-29-2016, 07:44 PM

bump

olblue75 · 04-29-2016, 07:55 PM

Their totally different P/Ns so there's some kind of different and when you say it's different what part is different?? Is it dual mode if so you could have got a complete cat back setup...

cc-rider · 04-29-2016, 08:56 PM

I believe they are the exact same cats. I've read that here many times. Give one of the sponsored shops on this site a call and they will confirm 100% for you. But I am fairly certain the cats are the same.

rvadim76 · 04-29-2016, 09:23 PM

Mid-pipes and cats look alike to me, that's why I am confused. I've been told it's zl1 exhaust with muffler delete and I am positive it is. Just want to know what the differences between cats/manifolds are.

Thank you

rvadim76 · 05-16-2016, 09:41 PM

Final update: they are the same with LS3

cc-rider · 05-16-2016, 10:35 PM

Yep. That's what I thought. And it's good that you took the time to come back on here and confirm this once you found out. So many threads go unanswered and just get dropped. Closing these out with a final confirmation helps when people are searching.

04-29-2016, 06:16 PM	#1
rvadim76 Drives: SOLD: 2012 Chevy Camaro 2SS Join Date: Jan 2015 Location: Texas Posts: 560 View My Garage	ZL1 cats vs SS (LS3/L99) Hi All, Sorry if this has been already asked, I could not find any ultimate answer. Apparently I discovered that I got ZL1 exhaust installed on my SS. I see it's slightly different from L99/LS3 engine (but fits well) so I am curious if these platforms share the same cats system or ZL1 differs by, let's say flow capability. Any input would be greatly appreciated. P.S. I personally think it would be logical if zl cats had a better flow but I am not quite confident about that. Tks

04-29-2016, 07:55 PM	#4
olblue75 Drives: 2010 2SS/RS Join Date: Dec 2009 Location: Clarksville Tennesse. Posts: 6,064	Their totally different P/Ns so there's some kind of different and when you say it's different what part is different?? Is it dual mode if so you could have got a complete cat back setup... __________________ Orange Krush II 1LE Front sway bar, Splitter, shocks and struts, Z28 dual mode mufflers, Intake, UCA Bushings, and Toresen 3.91 Diff. 1 piece DSS Drive Shaft, ZL1/C7 Calipers, and 32mm JPSS Rear Bar. ASC race spec splitter and wicker. 6th Gen M017 Wheels. Stainless Works 1 7/8 LTs. DSE and PAFDT Suspension components.

04-29-2016, 07:37 PM	#2
rvadim76 Drives: SOLD: 2012 Chevy Camaro 2SS Join Date: Jan 2015 Location: Texas Posts: 560 View My Garage	..anyone?

04-29-2016, 07:44 PM	#3
rvadim76 Drives: SOLD: 2012 Chevy Camaro 2SS Join Date: Jan 2015 Location: Texas Posts: 560 View My Garage	bump

04-29-2016, 08:56 PM	#5
cc-rider Drives: 2010 Camaro SS Join Date: Dec 2006 Location: MN Posts: 1,172	I believe they are the exact same cats. I've read that here many times. Give one of the sponsored shops on this site a call and they will confirm 100% for you. But I am fairly certain the cats are the same.

04-29-2016, 09:23 PM	#6
rvadim76 Drives: SOLD: 2012 Chevy Camaro 2SS Join Date: Jan 2015 Location: Texas Posts: 560 View My Garage	Mid-pipes and cats look alike to me, that's why I am confused. I've been told it's zl1 exhaust with muffler delete and I am positive it is. Just want to know what the differences between cats/manifolds are. Thank you

05-16-2016, 09:41 PM	#7
rvadim76 Drives: SOLD: 2012 Chevy Camaro 2SS Join Date: Jan 2015 Location: Texas Posts: 560 View My Garage	Final update: they are the same with LS3

05-16-2016, 10:35 PM	#8
cc-rider Drives: 2010 Camaro SS Join Date: Dec 2006 Location: MN Posts: 1,172	Yep. That's what I thought. And it's good that you took the time to come back on here and confirm this once you found out. So many threads go unanswered and just get dropped. Closing these out with a final confirmation helps when people are searching.