Speed engineering just released 2" headers for the 5th Gen ls3 - Page 3 - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

WHAMMO · 11-03-2022, 04:28 PM

I dont think you will notice a 5-10hp gain. I am all for the gains that beeing said! I havent notice nothing from 2.5''(stock NPP) to full 3'' exhaust Xpipe(LT 2'' in both cases). Maybe in the 10hp range and thats in a very agressive H/C setup.

Winemedineme69me · 11-03-2022, 05:04 PM

Quote:

Originally Posted by WHAMMO

I dont think you will notice a 5-10hp gain. I am all for the gains that beeing said! I havent notice nothing from 2.5''(stock NPP) to full 3'' exhaust Xpipe(LT 2'' in both cases). Maybe in the 10hp range and thats in a very agressive H/C setup.

Boosted with a stroker motor, definitely.

joshnmn · 11-05-2022, 06:23 AM

Just wanted to share some install info.

First, the headers look awesome. The 2" tubes are monstrous. The metal is a thinner, lower quality alloy than my ARH headers, but IDK if that's a bad thing. As you can see the welds are terrific and the mounting flange is nice and thick (TWSS).

You can see on the driver's side that the primaries don't come near the steering shaft knuckle, or the rubber boot.

On the passenger side, mine didn't hit the frame. In the pic it looks like it, but there is an air gap, it's just hard to get the phone to capture it. I did opt for the thinner MLS factory gasket, the included paper gasket may be thick enough to push it out closer.

Another thing I thought was we'll thought out is the primary tube placement in regard to the spark plugs. There are no problems getting plugs, or tools, in there to swap them out. That's nice.

tartagliazl1 · 11-05-2022, 09:41 AM

Awesome job Josh. Wish mine had better clearance on the passenger side. Still rubs. Yours looks like it’s sitting against the frame in the picture. Let me know if yours sounds tingy when you drive it. Could be from the thinner wall tube. Never had it with the 17/8” headers.

joshnmn · 11-05-2022, 09:56 AM

Definitely will report back

It will have a 3" ARH system behind, muffler delete. Don't know that I'll be able to hear a thing, much less a ting

Winemedineme69me · 11-05-2022, 10:29 AM

Quote:

Originally Posted by joshnmn

Definitely will report back

It will have a 3" ARH system behind, muffler delete. Don't know that I'll be able to hear a thing, much less a ting

Very nice job, looks great. I want to upgrade mine so bad, just got to pay off the forged 416 motor, blower, etc... That I had to put on my credit cards, next year I will get these headers and bigger injectors 1200cc to upgrade my 950cc currently. I'm currently running 1 3/4" headers on my setup, that's a 416 ls3 stroker running a ESS tuning centrifugal G4 blower on e85. Making in the mid 900's rear wheel HP, so I need these bigger 2" headers.

Here's a clip of my car.

https://youtube.com/shorts/-3iwvzM77T8?feature=share

https://youtube.com/shorts/0_wqpZDiHig?feature=share

tartagliazl1 · 11-05-2022, 11:05 AM

Quote:

Originally Posted by joshnmn

Definitely will report back

It will have a 3" ARH system behind, muffler delete. Don't know that I'll be able to hear a thing, much less a ting

my car is loud as hell and i still hear it, with the radio off of coarse.

WHAMMO · 11-11-2022, 12:56 PM

Quote:

Originally Posted by Winemedineme69me

Boosted with a stroker motor, definitely.

oh I see!!

KGreen · 08-13-2023, 09:13 AM

It seems like it is 50 50, some guys are saying they hit some guys say they don't. Any new info on these?

11-03-2022, 04:28 PM	#29
WHAMMO Drives: 13' 1LE Join Date: Apr 2012 Location: Canada Posts: 2,642	I dont think you will notice a 5-10hp gain. I am all for the gains that beeing said! I havent notice nothing from 2.5''(stock NPP) to full 3'' exhaust Xpipe(LT 2'' in both cases). Maybe in the 10hp range and thats in a very agressive H/C setup. __________________ 13' 1LE Old setup: TSP 231-236/Tick 660/.105 PR, UDP, SW LT 2'' & HFC, stock NPP & H pipe, VR-DRX CAI, air scoop, Goertz1 manifold, 102mm BBK, 26" Toyo DRs, Forgestars R17x10 & F18x8, rear seat delete, remote Pat G tune Autocal, 7400 limiter, Spec Mini Twin. 91oct. 11.90@122.3, 0-60ft 2.0 / 11.99@123.6, 0-60ft 2.1 DA+819 ...519RWHP SAE Solid roller SBE LS3, FED, LLSR, 91oct, 605rwhp N/A. Tuned by Pat G. Build by me.

11-05-2022, 06:23 AM	#31
joshnmn 2&THEHIT Drives: 5th Gen Camaro; 5th Gen Ram 3500 Join Date: Mar 2018 Location: Garner, NC Posts: 1,013 View My Garage	Just wanted to share some install info. First, the headers look awesome. The 2" tubes are monstrous. The metal is a thinner, lower quality alloy than my ARH headers, but IDK if that's a bad thing. As you can see the welds are terrific and the mounting flange is nice and thick (TWSS). You can see on the driver's side that the primaries don't come near the steering shaft knuckle, or the rubber boot. On the passenger side, mine didn't hit the frame. In the pic it looks like it, but there is an air gap, it's just hard to get the phone to capture it. I did opt for the thinner MLS factory gasket, the included paper gasket may be thick enough to push it out closer. Another thing I thought was we'll thought out is the primary tube placement in regard to the spark plugs. There are no problems getting plugs, or tools, in there to swap them out. That's nice. Attached Images

11-05-2022, 09:41 AM	#32
tartagliazl1 Drives: 2013 zl1 vert Join Date: Dec 2018 Location: Rochester, New york Posts: 956	Awesome job Josh. Wish mine had better clearance on the passenger side. Still rubs. Yours looks like it’s sitting against the frame in the picture. Let me know if yours sounds tingy when you drive it. Could be from the thinner wall tube. Never had it with the 17/8” headers. __________________ 22% lower/ 2.5 upper/ 2” headers/ cat delete/ x-pipe/ 2 gallon x tank/ 100-3 pump/ fic 850/ dsx aux kit/ 103mm throttle body/ RPM 5” intake/ meth kit/ prometh lid injection/FI interchiller/ 160* stat/ ngk-7/ msd wires/ elite catch can/ tsp cam/ Che trunnions/ ported supercharger/ 1/2” lid spacer/ brick mod/BMR toe and trailing arms/ 751hp 757 tq SAE @17.3lb on a loaded dyno.

11-05-2022, 09:56 AM	#33
joshnmn 2&THEHIT Drives: 5th Gen Camaro; 5th Gen Ram 3500 Join Date: Mar 2018 Location: Garner, NC Posts: 1,013 View My Garage	Definitely will report back It will have a 3" ARH system behind, muffler delete. Don't know that I'll be able to hear a thing, much less a ting

08-13-2023, 09:13 AM	#37
KGreen Drives: 2011 Camaro SS Join Date: Jul 2022 Location: Fremont, Ohio Posts: 9	It seems like it is 50 50, some guys are saying they hit some guys say they don't. Any new info on these?