quick performance question - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

brantley847 · 09-24-2008, 01:01 AM

I have seen some discussion on cat back exhaust for the V6 so I figured I would tap it with the V8....

I heard the sound of the V8 at indy and it sounded fantastic, obviously the cat back will offer some less restrictive aspects and increases as far as performance...but what about sound? Would anyone take an educated guess on how it would manipulate the sound of the already throaty V8?

and last...Looking at the aftermarket photos/charts from indy... this probably sounds really stupid, but what the hell is a diffuser?

shroomjohn · 09-24-2008, 02:31 AM

I think it'll give it a great growl almost like you d expect to see a truck w big chrome pipes! A diffuser is the molded rear underbody of the car to help improve aerodynamics and aids w downforce I cant wait to try it out!

headpunter · 09-24-2008, 09:26 AM

the diffuser they made does not do anything substantial for aerodynamics on this car. the accesorries manager told me that the only piece that made a substantial difference was the blade spoiler.

also you can expect the cat back to be very loud.

*radz28* · 09-24-2008, 11:13 AM

I think a catback with cutouts is going to be in my car's future. I'd love to have side exhaust but don't think it's really feasible so I'll probably look toward GMPP or Borla.

fbird777 · 09-24-2008, 04:31 PM

Quote:

Originally Posted by headpunter

the diffuser they made does not do anything substantial for aerodynamics on this car. the accesorries manager told me that the only piece that made a substantial difference was the blade spoiler.

also you can expect the cat back to be very loud.

Did he go into detail about the blade spoiler???

headpunter · 09-24-2008, 05:51 PM

Quote:

Originally Posted by fbird777

Did he go into detail about the blade spoiler???

well he said it was good enough they wanted to do a run of 50 special edition cars with them installed so they could be used in NHRA Pro street classes, but the idea got shot down. so i think they make a difference how much you ask? i dont know. Do i Want one anyways? HELL YES

LSxJunkie · 09-24-2008, 06:40 PM

RPO NC8 anyone? Hopefully the GMPP Catback won't be that loud.

headpunter · 09-24-2008, 07:07 PM

Quote:

Originally Posted by LSxJunkie

RPO NC8 anyone? Hopefully the GMPP Catback won't be that loud.

what was the NC8?

brantley847 · 09-25-2008, 12:53 AM

I am hoping the cat back isnt cheesy loud....but a thick throaty growl will be pleasing

LSxJunkie · 09-25-2008, 01:06 PM

Quote:

Originally Posted by headpunter

what was the NC8?

Regular Production Option for the chambered exhaust on the 1969 Camaro. It was so loud it was removed from production mid year. You could get the same effect by deleting the mufflers on the new Camaro and welding in some Sweet Thunders.

fldrummer · 09-25-2008, 06:09 PM

My one big gripe about the new Camaro, next to the narrow trunk opening, is the unpainted rear diffuser. Why can't they just paint it like the rest of the car? After all, this is a sports car, not a truck or low-end economy car! Is GM afraid that the exhaust will stain it? I just don't get it.

AZCamaroFan · 09-25-2008, 08:02 PM

I thought the black was to thin the car out, and not make it look so bulky.

CWI · 09-27-2008, 12:32 AM

I'm planning on entire custom exhaust including high flow cats and headers when they become available. I'm thinking let it exhale then teach it how to inhale. GT500's for breakfast?

2011ssgradprsnt · 09-28-2008, 09:59 PM

Quote:

Originally Posted by azfan

I thought the black was to thin the car out, and not make it look so bulky.

Well you know the ladies always wear black to make themselves look thinner so I guess same thing works for car to

personally not a fan of the bulky muffler/box things right behind the rear bumper, should move mufflers up and just do a tailpipe setup, unless they are claiming some sort of structural integrity thing, but i dont see how that could be an issue

09-24-2008, 01:01 AM	#1
brantley847 v It bites. Drives: 2011 IBM 2SS/RS Join Date: May 2008 Location: Orlando, FL Posts: 3,585	quick performance question I have seen some discussion on cat back exhaust for the V6 so I figured I would tap it with the V8.... I heard the sound of the V8 at indy and it sounded fantastic, obviously the cat back will offer some less restrictive aspects and increases as far as performance...but what about sound? Would anyone take an educated guess on how it would manipulate the sound of the already throaty V8? and last...Looking at the aftermarket photos/charts from indy... this probably sounds really stupid, but what the hell is a diffuser?

09-24-2008, 09:26 AM	#3
headpunter Not That sad..considering Drives: Man Join Date: Aug 2007 Location: the part of washington the capital forgot about. Posts: 3,747 View My Garage	the diffuser they made does not do anything substantial for aerodynamics on this car. the accesorries manager told me that the only piece that made a substantial difference was the blade spoiler. also you can expect the cat back to be very loud. __________________ Stop Whinging

09-24-2008, 11:13 AM	#4
radz28 Petro-sexual Drives: Ultra-Grin Join Date: Oct 2006 Location: Crazy Coast Posts: 15,186 View My Garage	I think a catback with cutouts is going to be in my car's future. I'd love to have side exhaust but don't think it's really feasible so I'll probably look toward GMPP or Borla. __________________ '20 ZL1 Black "Fury" A10, PDR, Exposed CF Extractor Magnuson Magnum DI TVS2650R // RFBG // Soler 103 // TooHighPSI Port Injection // THPSI Billet Lid // FF // Katech Drop-In // PLM Heat Exchanger // ZLE Cradle bushings // BMR Chassis-Suspension Stuff // aFe Bars // Diode Dynamics LEDs // ACS Composites Guards // CF Dash // Aeroforce // tint // other stuffs

09-24-2008, 06:40 PM	#7
LSxJunkie Snark snark snark Drives: RX350 Join Date: Sep 2008 Location: 3L Hell Posts: 555	RPO NC8 anyone? Hopefully the GMPP Catback won't be that loud. __________________ What is this, CorvetteForum Lite?

09-27-2008, 12:32 AM	#13
CWI Helping Build America Drives: 2010 2SS/RS,LS3 2013 Duramax 3500HD Join Date: Aug 2008 Location: Freeport LPG Export Posts: 3,839 View My Garage	I'm planning on entire custom exhaust including high flow cats and headers when they become available. I'm thinking let it exhale then teach it how to inhale. GT500's for breakfast? __________________ Life's journey is not to arrive at the grave safely in a well preserved body, but rather to skid in sideways, totally worn out, shouting "Holy shit, what a ride!"

09-24-2008, 02:31 AM	#2
shroomjohn Drives: Golden Eagle Join Date: Jun 2008 Location: No Posts: 1,135 View My Garage	I think it'll give it a great growl almost like you d expect to see a truck w big chrome pipes! A diffuser is the molded rear underbody of the car to help improve aerodynamics and aids w downforce I cant wait to try it out!

09-25-2008, 12:53 AM	#9
brantley847 v It bites. Drives: 2011 IBM 2SS/RS Join Date: May 2008 Location: Orlando, FL Posts: 3,585	I am hoping the cat back isnt cheesy loud....but a thick throaty growl will be pleasing

09-25-2008, 06:09 PM	#11
fldrummer "Black Ace" Drives: Supercharged 2010 SS, 2016 Golf R Join Date: Aug 2008 Location: Ft. Lauderdale, FL Posts: 1,352	My one big gripe about the new Camaro, next to the narrow trunk opening, is the unpainted rear diffuser. Why can't they just paint it like the rest of the car? After all, this is a sports car, not a truck or low-end economy car! Is GM afraid that the exhaust will stain it? I just don't get it.

09-25-2008, 08:02 PM	#12
AZCamaroFan Camaro6 2016-2018 Drives: sometimes Join Date: Mar 2008 Location: Phoenix Posts: 18,450	I thought the black was to thin the car out, and not make it look so bulky.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
I wonder it this will make it on Camaro: GM reconfigurable performance display	radz28	Audio, Video, Bluetooth, Navigation, Radar, Electronics Forum	15	10-27-2008 01:52 PM
Quick question for everyone.	AnEvilPenguin	5th Gen Camaro SS LS LT General Discussions	35	07-16-2008 05:48 PM
Performance question - gains from pulleys?	96CAMaro	Camaro V8 LS3 / L99 Engine, Exhaust, and Bolt-Ons	7	04-11-2008 07:22 PM
quick question on pontiacs	Dave McFly	General Automotive + Other Cars Discussion	19	03-03-2008 12:33 AM
New Member, Quick Question	NateZ	5th Gen Camaro SS LS LT General Discussions	10	10-11-2007 10:59 AM