How much more Power with headers?

MyNameIs · 02-14-2024, 10:21 PM

My car is stock SS 6 spd except with ported Throttle Body. How much more HP and Tq can I expect with Long Tube headers going through my stock NPP exhaust? Its a 17' that I bought new, now with about 68k miles.

FlukeSS · 02-15-2024, 07:42 AM

Headers in general have a range of about 20-30 rwhp give or take depending on tuner. I think some people have hit as high as 35 rwhp.

Not sure just how much torque though. Unsure on ported TB either.

LT4Greg · 02-15-2024, 09:04 AM

I would add a CAI intake if you are going to put headers on. A cam change and CAI would work real well with headers also.

KingLT1 · 02-15-2024, 09:04 AM

Catless LTH on a pretty much stock car, +25-30 whp. Catted, +20-25whp. Cat delete pipes with factory headers, 10-15whp.

knighti2 · 02-15-2024, 06:41 PM

I had a Rotofab and a Soler 87 TB when I added my Kooks headers and green cats. All else being stock. My gain was around 28hp

Summit20171SS · 02-15-2024, 06:54 PM

Quote:

Originally Posted by KingLT1

Catless LTH on a pretty much stock car, +25-30 whp. Catted, +20-25whp. Cat delete pipes with factory headers, 10-15whp.

Would that translate on a manual car to about 50-60hp at the flywheel?

Joshinator99 · 02-15-2024, 07:23 PM

Quote:

Originally Posted by Summit20171SS

Would that translate on a manual car to about 50-60hp at the flywheel?

No way. A gain of 30 WHP with a drivetrain loss of 15% means you gained 35 crank HP. A gain of 25 WHP with that same drivetrain loss is 29 crank HP.

dpevans · 02-15-2024, 07:54 PM

When you pull the trigger make sure you heat wrap them, starter overheating is a common issue.

MyNameIs · 02-15-2024, 08:22 PM

Quote:

Originally Posted by LT4Greg

I would add a CAI intake if you are going to put headers on. A cam change and CAI would work real well with headers also.

I have a drop in K&N filter in the stock box.

MyNameIs · 02-15-2024, 08:25 PM

So is that 20 or 30 HP is quite noticable?....right?

Aaron07 · 02-15-2024, 08:45 PM

I’m at 540 whp. Mods in signature

2SS Capt · 02-15-2024, 09:07 PM

Quote:

Originally Posted by MyNameIs

So is that 20 or 30 HP is quite noticable?....right?

I would think it would be hardly noticable as that is only about a 4.4% to 6.6% gain in power...

I guess you could look at it this way, the 455 HP SS is rated at 4.3 sec with M6, (4.0 sec with A10) 0-60 Mph, the 650 HP ZL-1 is rated at 3.7 sec with M6 (3.5 sec with A10) 0-60... I would guess 30 extra WHP might knock 0.1 sec off your 0-60 at best...

Joshinator99 · 02-15-2024, 09:31 PM

Quote:

Originally Posted by MyNameIs

So is that 20 or 30 HP is quite noticable?....right?

E85 is a better and more worthwhile mod IMO.

cdrptrks · 02-15-2024, 10:24 PM

Quote:

Originally Posted by MyNameIs

So is that 20 or 30 HP is quite noticable?....right?

My buddy let me drive his SS 1LE on track with the mods below and it was capable of going about 1.5 seconds faster per lap than my personal best in my SS 1LE at NOLA with stock power (around 400whp). So a gain of about 60hp was noticeable to me. If you're already getting a tune with your headers you might as well get a flex fuel sensor and make it a flex fuel tune that supports both E85 and 93 octane. LT2 intake manifold from the C8 Corvette (requires a bit of modification to fit) is another inexpensive mod to add power that you could do before a tune in addition to the previously mentioned intake.

Mods: Rotofab Intake, 95mm throttle body, LT2 intake from C8 Corvette, 1 7/8" headers, x-pipe, tuned for 93 octane making 457rwhp

02-14-2024, 10:21 PM	#1
MyNameIs Account Suspended Drives: Camaro SS Join Date: Aug 2023 Location: Middle Park East, Liberty City Posts: 238	How much more Power with headers? My car is stock SS 6 spd except with ported Throttle Body. How much more HP and Tq can I expect with Long Tube headers going through my stock NPP exhaust? Its a 17' that I bought new, now with about 68k miles.

02-15-2024, 07:42 AM	#2
FlukeSS Drives: 2020 Camaro 2SS A10 Join Date: Jun 2018 Location: Michigan Posts: 1,388	Headers in general have a range of about 20-30 rwhp give or take depending on tuner. I think some people have hit as high as 35 rwhp. Not sure just how much torque though. Unsure on ported TB either. __________________ 2020 Camaro 2SS A10 \| Rebuilt by: CBI Street Cars \| 2" SE LT Headers \| 3" SE X-Pipe \| 3" MBRP Axle-Back \| Pri & Sec Cat Deletes \| K&N Typhoon CAI \| LT2 Ported \| 95mm ZR1 TB \| DOD Delete \| BTR Stage I Cam \| ECM, TCM & E85 \|Tuned by: Shane Hinds \| Dyno: 510 rwhp 472 rwtq

02-15-2024, 09:04 AM	#3
LT4Greg Drives: 2017 Camaro ZL1 Coupe Join Date: May 2016 Location: Georgia Posts: 5,813	I would add a CAI intake if you are going to put headers on. A cam change and CAI would work real well with headers also. __________________ ZL1 Coupe, PDR, Exposed carbon fiber hood insert, My Link with Nav, M6 6 speed and Silver Ice Metallic. Mods done: ceramic window tint, GM Accessories Camaro floor mats and Roto-Fab CAI.

02-15-2024, 09:04 AM	#4
KingLT1 Drives: 2016 1SS NFG A8 Join Date: Aug 2017 Location: 46804 Posts: 6,800	Catless LTH on a pretty much stock car, +25-30 whp. Catted, +20-25whp. Cat delete pipes with factory headers, 10-15whp. __________________ 2016 NFG 1SS A8 Options-2SS Leather/NPP Perf. mods-Whipple 2.9/Fuel System/Flex Fuel/103mm TB/Rotofab Big Gulp/Cat Deletes/Corsa NPP Per. times- 10.5 @ 137 w/ 1.8 60ft Full weight on 20's 1200DA

02-15-2024, 06:41 PM	#5
knighti2 Drives: 2SS M6 Hot Wheels #515 Join Date: May 2020 Location: Virginia Posts: 103	I had a Rotofab and a Soler 87 TB when I added my Kooks headers and green cats. All else being stock. My gain was around 28hp __________________ Rotofab, Soler 87mm ported TB, Kooks headers / green cats, MSD wires, flex fuel Stock intake (no porting) and stock NPP exhaust.

02-15-2024, 07:54 PM	#8
dpevans Drives: 2024 Riverside Blue 2SS 1LE Join Date: Mar 2016 Location: Fort Wayne, IN Posts: 1,209	When you pull the trigger make sure you heat wrap them, starter overheating is a common issue.

02-15-2024, 08:25 PM	#10
MyNameIs Account Suspended Drives: Camaro SS Join Date: Aug 2023 Location: Middle Park East, Liberty City Posts: 238	So is that 20 or 30 HP is quite noticable?....right?

02-15-2024, 08:45 PM	#11
Aaron07 Drives: 2017 2SS F1FTY Join Date: Feb 2020 Location: Fort Wayne, IN Posts: 348	I’m at 540 whp. Mods in signature __________________ 2017 2SS F1FTY/HUD/Mag Ride/NPP/Nav/M6/Mishimoto catch can/BTR stage 2 Cam kit/GPI ported LT2 IM and 95mm TB/Roto Fab CAI/Kooks Long Tubes ceramic coated/Borla S Type NPP catback/AFE lowering springs/1LE wheels/OEM smoked tail lights/Diode Dynamics side markers/Uniden R7/3D Maxpider floor mats/Adams graphene ceramic coat

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