1 3/4's vs 1 7/8's Headers - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

brAnd7onX · 01-09-2010, 10:25 PM

SLP I believe only offers the 1 3/4's headers and the more popular ones like ARH and Kooks offers 1 7/8's. I guess I just wanted to know is there really any power difference between the two or even any sound difference? Thanks.

viper,redz · 01-09-2010, 11:47 PM

I would like to know also . I know with big ci decent size cam and good heads u would use the 1 7/8 for max hp but for a bolt on car 1 3/4 should be fine but I would like other opinion .

brAnd7onX · 01-10-2010, 12:57 AM

*BUMP* anyone?

mr_desmo · 01-10-2010, 08:04 AM

Quote:

Originally Posted by brAnd7onX

SLP I believe only offers the 1 3/4's headers and the more popular ones like ARH and Kooks offers 1 7/8's. I guess I just wanted to know is there really any power difference between the two or even any sound difference? Thanks.

been discussed 500 times...do a search...

bolt-ons only (no engine work) 1 3/4 the rest 1 7/8...

JANNETTYRACING · 01-10-2010, 09:38 AM

Quote:

Originally Posted by mr_desmo

been discussed 500 times...do a search...

bolt-ons only (no engine work) 1 3/4 the rest 1 7/8...

I built 3 L99 cars with Maggies and Headers 1 car with 1 3/4 and 2 with 1 7/8 I have not been able to tell any difference between the 2 sizes but they are on different cars.

The L99 car with 1 3/4 Headers belongs to RedSS, which is sitting at 545 RWHP, with 3.4 pulley and Meth injection.

The other 2 L99s have 1 7/8 Headers with 3.6 pulleys and are both sitting at 501 and 505 respectively.

When we tested RedSS with the 3.6 Pulley and NO Meth it was also sitting at 505 RWHP.

So At this point it is still up in the air.

I need someone to donate they're car so I can test the headers back to back on the same car.

I think the difference if any will be larger on an unmodified or N/A car.

I have 1 3/4 and 1 7/8 Headers sitting in wait.

Ted.

PieNsky · 01-10-2010, 09:47 AM

I think that JannettyRacing could host an online show called " Camaro5 MythBusters."
Of course it would need the obliquity hottie on it...please.

FEN · 01-10-2010, 10:21 AM

SLP tech says that their 1 3/4 produce better low end torque and are good for up to 640HP(@ motor?) applications.

JANNETTYRACING · 01-10-2010, 10:33 AM

Quote:

Originally Posted by FEN

SLP tech says that their 1 3/4 produce better low end torque and are good for up to 640HP(@ motor?) applications.

Hmmm, Sounds Familiar, 1 3/4 Header L99 545 RWHP Automatic, X 1.2 = 654 Crank HP.

JANNETTYRACING · 01-10-2010, 10:35 AM

Quote:

Originally Posted by PieNsky

I think that JannettyRacing could host an online show called " Camaro5 MythBusters."
Of course it would need the obliquity hottie on it...please.

Seeeek The Truuuth Luuuke, and in it, you will Find the Force

PieNsky · 01-10-2010, 10:40 AM

The Force that pushes you back into your seat?

aj2ssrs · 01-10-2010, 11:03 AM

Ted, I have an appointment for header install and dyno tune on the 19th if you need a car. Lat me know.

SC2150 · 01-10-2010, 11:12 AM

Quote:

Originally Posted by FEN

SLP tech says that their 1 3/4 produce better low end torque and are good for up to 640HP(@ motor?) applications.

This is a pretty accurate statement. Unless we are doing a big cube heads/cam build, the 1 3/4" make more power in the low-mid range. On a 408-454 ci build we use the 1 7/8" as the 1 3/4 hold back power above 5k.

IMHO most 2010 camaros w.stock bore & stroke the 1 7/8's will leave some of theat useable torque on the table for street driving.

brAnd7onX · 01-10-2010, 12:30 PM

So if I had 1 3/4's headers and was to eventually slap a roots charger on my camaro would that be okay or would I need to upgrade to 7/8's?

PieNsky · 01-10-2010, 12:33 PM

Quote:

Originally Posted by brAnd7onX

So if I had 1 3/4's headers and was to eventually slap a roots charger on my camaro would that be okay or would I need to upgrade to 7/8's?

See post #5

01-09-2010, 10:25 PM	#1
brAnd7onX Drives: 2012 1SS IOM Join Date: Oct 2009 Location: Hutto, TX Posts: 1,642	1 3/4's vs 1 7/8's Headers SLP I believe only offers the 1 3/4's headers and the more popular ones like ARH and Kooks offers 1 7/8's. I guess I just wanted to know is there really any power difference between the two or even any sound difference? Thanks.

01-09-2010, 11:47 PM	#2
viper,redz Drives: 99z28 Join Date: Oct 2009 Location: gonzales Posts: 115	I would like to know also . I know with big ci decent size cam and good heads u would use the 1 7/8 for max hp but for a bolt on car 1 3/4 should be fine but I would like other opinion . __________________ 99 z28 a3 346ci .Motor by FUTRAL, Suspension by MADMAN 1.36 60ft 10.06 @ 132 175 hit old setup . New setup 370ci with 88mm turbo in the works . 2010 inferno orange rs/ss 13.2 @ 108.4 stock http://getonitracing.net/

01-10-2010, 10:40 AM	#10
PieNsky Drives: Victory Red 1LS Join Date: Nov 2008 Location: Louisville,KY Posts: 1,929 View My Garage	The Force that pushes you back into your seat? Last edited by PieNsky; 01-10-2010 at 12:33 PM.

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01-10-2010, 12:57 AM	#3
brAnd7onX Drives: 2012 1SS IOM Join Date: Oct 2009 Location: Hutto, TX Posts: 1,642	BUMP anyone?

01-10-2010, 09:47 AM	#6
PieNsky Drives: Victory Red 1LS Join Date: Nov 2008 Location: Louisville,KY Posts: 1,929 View My Garage	I think that JannettyRacing could host an online show called " Camaro5 MythBusters." Of course it would need the obliquity hottie on it...please.

01-10-2010, 10:21 AM	#7
FEN Drives: BLACK 2SS/RS Join Date: Sep 2009 Location: Florida Posts: 1,092	SLP tech says that their 1 3/4 produce better low end torque and are good for up to 640HP(@ motor?) applications.

01-10-2010, 11:03 AM	#11
aj2ssrs Drives: IOM 2SS/RS Join Date: Jul 2009 Location: North NJ Posts: 192	Ted, I have an appointment for header install and dyno tune on the 19th if you need a car. Lat me know.

01-10-2010, 12:30 PM	#13
brAnd7onX Drives: 2012 1SS IOM Join Date: Oct 2009 Location: Hutto, TX Posts: 1,642	So if I had 1 3/4's headers and was to eventually slap a roots charger on my camaro would that be okay or would I need to upgrade to 7/8's?