what size headers should I get for my 2011 camaro SS - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

jims2SSL99 · 11-07-2012, 08:48 AM

My next mod is going to be headers & X-pipe but not sure what kind to get? any suggestions??? I already have SLP loudmouth Axle back & love the sound from SLP But I'm confused on which header to get? SLP headers are 1 3/4 & a few others I looked at were 1 7/8 --- which size should I get?? & does it matter??? Please help!

is there a right size or wrong size to fit the L-99 V-8? really could use some input from other 5th gen Camaro owners. Thank U

Joe@CPR.com · 11-07-2012, 08:52 AM

You will gain some power w/ the 1 7/8 over the 3/4 it's not much on a stock motor but if you ever get buck wild w/ the car they will start showing their advantage down the road. the price difference is very little so why not just get the 1 7/8

sportyb24 · 11-07-2012, 08:59 AM

1 7/8 no doubt!!

Stingray · 11-07-2012, 09:15 AM

How about 1 7/8 stepped... worth it? (like Kooks)

Juiced1 · 11-07-2012, 09:17 AM

1 7//8" have worked amazing on theses motors. You won't lose much running a 1 3/4" header though and the SLP set up is nice because it'll allow you to run a 3" system all the way back. The 1 7/8" headers are also nice because they'll give you some room to grow if you add some more serious mods down the road such as a cam, heads or maybe even a power adder. Just as a heads up... that Loud Mouth axle-back will sound INSANE with headers. Very loud and very raspy.

Kelly@PCMofNC · 11-07-2012, 02:45 PM

I suggest 1 7/8" headers as well! As far as brand I definitely recommend Kooks. Great performance and high quality. They are also running a ~$100 off special until almost the end of the month, shoot me a PM if you'd like some pricing!

caverman · 11-07-2012, 03:00 PM

If you are buying new then I would go with 1 7/8" and actually I would really consider the 1 3/4" - 1 7/8" stepped headers.

Like others have mentioned there is very little HP difference in 1 3/4" vs 1 7/8". It's only if you end up adding more power adders down the road. On a stock motor I can tell you that I've beaten plenty of other stock motor (even some with a cam) with my 1 3/4" at the drag strip. I have suspension mods though and most other guys I come across with stock motors haven't touched suspension.

Muscle SS · 11-07-2012, 03:01 PM

size doesnt matter unless ur a pro... you'll never notice the 1-2hp that you'd be missing

litle88 · 11-07-2012, 03:05 PM

1 3/4 stepped to a 1 7/8 will technically speed up the air in the tubes but come at a Lil costlier price tag. But IMHO I'd stick to a 7/8's since they are cheaper. Ill be installing 2" TSP headers on my cousins car really soon they cost just the same as their 7/8's so why not. It wil be just a bolt on car..........so far lol.

VR1LE · 11-07-2012, 03:06 PM

1 7/8's here

Supercharged Red · 11-07-2012, 03:23 PM

1 7/8" Kooks LT

Apex Motorsports · 11-07-2012, 04:09 PM

You will see nice gains with 1 3/4 (in the neighborhood of 30 RWHP and 30 RWTQ) but you will see another 6-7 RWHP and 4-5RWTQ with 1 7/8. The larger the primary diameter gets the more air the headers will flow and the further up the RPM range the power band is moved. This means that generally the more power you make or the more race oriented your application is the bigger primary diameter you need, the closer to stock or the more street oriented the smaller primary diameter you need. In the specific example of the 2010+ Camaro SS, we have found that 1 7/8 long tube headers are a great all around header for the typical bolt on modified car that is driven regularly and occasionally taken to the track. They offer a tremendous improvement over stock with room to grow as owners modify their car further.

Ivan @ Southwest Speed · 11-07-2012, 04:17 PM

1 3/4" Tri Y's....

Bottom end Tq is unmatchable.

1 7/8" is the lead that everybody follows too. Can't go wrong either way.

Ivan

MarylandSpeed · 11-07-2012, 05:09 PM

95% of our header sales are 1 7/8". We also have stepped headers that are the best of both worlds. If you have questions, call us @ the number in the sig. We have helped a lot of customers here.

11-07-2012, 08:48 AM	#1
jims2SSL99 Account Suspended Drives: 2011 Camaro 2SS L-99 Join Date: May 2012 Location: Fort Myers Florida Posts: 821 View My Garage	what size headers should I get for my 2011 camaro SS My next mod is going to be headers & X-pipe but not sure what kind to get? any suggestions??? I already have SLP loudmouth Axle back & love the sound from SLP But I'm confused on which header to get? SLP headers are 1 3/4 & a few others I looked at were 1 7/8 --- which size should I get?? & does it matter??? Please help! is there a right size or wrong size to fit the L-99 V-8? really could use some input from other 5th gen Camaro owners. Thank U

11-07-2012, 08:59 AM	#3
sportyb24 Romanian Outlaw Drives: 13 ZL1 , 14 Silverado Crew Cab Join Date: Apr 2010 Location: Texas Baby Posts: 1,082	1 7/8 no doubt!! __________________ [/SIGPIC]2013 Camaro ZL1 M6

11-07-2012, 03:00 PM	#7
caverman Drives: '69 SS Convertible Join Date: May 2009 Location: DFW, TX Posts: 7,111	If you are buying new then I would go with 1 7/8" and actually I would really consider the 1 3/4" - 1 7/8" stepped headers. Like others have mentioned there is very little HP difference in 1 3/4" vs 1 7/8". It's only if you end up adding more power adders down the road. On a stock motor I can tell you that I've beaten plenty of other stock motor (even some with a cam) with my 1 3/4" at the drag strip. I have suspension mods though and most other guys I come across with stock motors haven't touched suspension. __________________ *-2010 Camaro* 2SS \| M6 \| VR w/White Stripes \| 1 3/4" KOOKS - 3" Magnaflow \| LPE 3.91 gears \| ADM tuned \| Halltech w/ADM Scoop \| Spohn/BMR Trailing Arm/Toe Rod \| BC Coilovers\| Pedders FE4 ZL1 swaybars \| Cradle/Diff/Radius Rod bushings \| VMax TB \| Morimoto Projectors \| MGW shifter \| Red Calipers Build Journal

11-07-2012, 03:01 PM	#8
Muscle SS All blackkk Drives: 2010 2SS/RS LS3 Join Date: Oct 2011 Location: Albany, NY Posts: 871	size doesnt matter unless ur a pro... you'll never notice the 1-2hp that you'd be missing __________________ Drivin it like I stole it.

11-07-2012, 03:05 PM	#9
litle88 V8 Lounge member #2 Drives: 2001 Ws6 Join Date: Sep 2009 Location: Burbank,IL Posts: 6,373	1 3/4 stepped to a 1 7/8 will technically speed up the air in the tubes but come at a Lil costlier price tag. But IMHO I'd stick to a 7/8's since they are cheaper. Ill be installing 2" TSP headers on my cousins car really soon they cost just the same as their 7/8's so why not. It wil be just a bolt on car..........so far lol. __________________ 2001 ws6, 40k miles, Ls3 416 stroker, short block built by PER the rest by me. LPE Ls3 heads milled to 12-1 comp, FAST 102, NW 102, kooks 2", dual DMH cutouts, Magnaflow C/B, BTR cam + springs. Full UMI suspension.

11-07-2012, 08:52 AM	#2
Joe@CPR.com Account Suspended Drives: 03 vette, 94 trans am, 04 gto Join Date: Jul 2012 Location: Mesa, AZ Posts: 995	You will gain some power w/ the 1 7/8 over the 3/4 it's not much on a stock motor but if you ever get buck wild w/ the car they will start showing their advantage down the road. the price difference is very little so why not just get the 1 7/8

11-07-2012, 09:15 AM	#4
Stingray just can't get enough Drives: a bunch of fast toys... Join Date: May 2012 Location: SoFla Posts: 3,605 View My Garage	How about 1 7/8 stepped... worth it? (like Kooks)

11-07-2012, 09:17 AM	#5
Juiced1 Account Suspended Drives: 2012 2SS CAMARO 45th Join Date: Apr 2011 Location: St. Charles, IL Posts: 18,663	1 7//8" have worked amazing on theses motors. You won't lose much running a 1 3/4" header though and the SLP set up is nice because it'll allow you to run a 3" system all the way back. The 1 7/8" headers are also nice because they'll give you some room to grow if you add some more serious mods down the road such as a cam, heads or maybe even a power adder. Just as a heads up... that Loud Mouth axle-back will sound INSANE with headers. Very loud and very raspy.

11-07-2012, 02:45 PM	#6
Kelly@PCMofNC Drives: 2010 RS/SS Join Date: Dec 2010 Location: Mooresville, NC Posts: 959	I suggest 1 7/8" headers as well! As far as brand I definitely recommend Kooks. Great performance and high quality. They are also running a ~$100 off special until almost the end of the month, shoot me a PM if you'd like some pricing!

11-07-2012, 03:06 PM	#10
VR1LE lighten up Francis Drives: 2013 Camaro 1LE Join Date: Oct 2012 Location: Liberty City,FL Posts: 218	1 7/8's here __________________ 1SS 1LE track rat ordered 10/19 Arrived at dealer 12/26/12 after hours delivery

11-07-2012, 03:23 PM	#11
Supercharged Red Drives: 2011 Camaro 2SS/RS A6 Victory Red Join Date: Aug 2012 Location: Snohomish WA Posts: 203	1 7/8" Kooks LT __________________ 2011 Camaro 2SS/RS A6/L99 Victory Red SLP TVS2300 Supercharger 6psi & Coil Covers. Roto Fab CAI. RX Catch can ZL1 Fuel Pump Kooks 1 7/8" LT Headers w/ High Flow Cats Corsa out the back! NT555R 305/35/20 472 RWHP 466 RWTQ 12.11 @ 114.3 MPH 1.81 60' Pacific Raceways Kent, WA 6/6/13

11-07-2012, 04:09 PM	#12
Apex Motorsports Drives: 2000 Camaro SS Join Date: Feb 2010 Location: Louisville, Ky. Posts: 25,179	You will see nice gains with 1 3/4 (in the neighborhood of 30 RWHP and 30 RWTQ) but you will see another 6-7 RWHP and 4-5RWTQ with 1 7/8. The larger the primary diameter gets the more air the headers will flow and the further up the RPM range the power band is moved. This means that generally the more power you make or the more race oriented your application is the bigger primary diameter you need, the closer to stock or the more street oriented the smaller primary diameter you need. In the specific example of the 2010+ Camaro SS, we have found that 1 7/8 long tube headers are a great all around header for the typical bolt on modified car that is driven regularly and occasionally taken to the track. They offer a tremendous improvement over stock with room to grow as owners modify their car further.

11-07-2012, 04:17 PM	#13
Ivan @ Southwest Speed Drives: '15 Z06, '01 NBM SS, '97 SS Join Date: May 2009 Location: Rio Rancho, NM Posts: 12,170	1 3/4" Tri Y's.... Bottom end Tq is unmatchable. 1 7/8" is the lead that everybody follows too. Can't go wrong either way. Ivan

11-07-2012, 05:09 PM	#14
MarylandSpeed Account Suspended Drives: 2012 ZL1 & 2010 2SS/RS Join Date: Jul 2009 Location: Maryland Posts: 3,378	95% of our header sales are 1 7/8". We also have stepped headers that are the best of both worlds. If you have questions, call us @ the number in the sig. We have helped a lot of customers here.