Difference between 1 7/8" and 2" ARH Headers - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

cody.freeman1 · 11-03-2011, 12:44 PM

As the title states, is there any HP/TQ/Sound difference between the 2 sizes?

Parag · 11-03-2011, 12:52 PM

Everyone will give thier opinion and that really all it is, but i go with the professionals opinion, and they say that if you want only headers on a otherwise stock car go 1-3/4. If you want other goodies go 1-7/8. And if you want a 700 hp machine for track go 2

The Stig · 11-03-2011, 12:55 PM

Minimal differences in rwhp and torque. Sound I have no idea. If you do a search there are numerous threads that discuss this topic.

Juiced1 · 11-03-2011, 01:37 PM

I doubt it would make much of a sound differance. Stick with the 1 7/8 unless you plan on adding some serious power.

10camaross · 11-03-2011, 02:07 PM

Quote:

Originally Posted by Juiced1

I doubt it would make much of a sound differance. Stick with the 1 7/8 unless you plan on adding some serious power.

Why???? 2in make more power. Why not go with them??

blazzin1 · 11-03-2011, 03:01 PM

Quote:

Originally Posted by 10camaross

Why???? 2in make more power. Why not go with them??

Oh Jeez! Do we really need to open this can of worms again!?!?!? LOL!!!

Parag · 11-03-2011, 03:12 PM

Quote:

Originally Posted by blazzin1

Oh Jeez! Do we really need to open this can of worms again!?!?!? LOL!!!

This has been said over and over again i dont want to see it either, just search it. It has to do with back pressure. Think about it if 2 makes more power than 15 inch must make 1500 hp
Just go with the right aize for your build and stop arguing about it

10camaross · 11-03-2011, 03:20 PM

Quote:

Originally Posted by Parag

This has been said over and over again i dont want to see it either, just search it. It has to do with back pressure. Think about it if 2 makes more power than 15 inch must make 1500 hp
Just go with the right aize for your build and stop arguing about it

Okay just stating facts. But for the OP i have 2in headers and a few other bolt ons and my car made 435hp 428tq on a mustang dyno so its really up to you.

Raptor626 · 11-03-2011, 03:30 PM

Go stepped, and you'll get the best of both worlds, that is if money is of no concern to you. Good luck.

10camaross · 11-03-2011, 03:31 PM

Quote:

Originally Posted by Raptor626

Go stepped, and you'll get the best of both worlds, that is if money is of no concern to you. Good luck.

This is true

Juiced1 · 11-03-2011, 04:46 PM

Quote:

Originally Posted by 10camaross

Why???? 2in make more power. Why not go with them??

They cost more.

10camaross · 11-03-2011, 05:34 PM

Quote:

Originally Posted by Juiced1

They cost more.

okay i gotcha. But it seems if your gonna spend $1000 dollars on headers. $100 shouldn't hurt. But i see your point

Motion427 · 11-03-2011, 05:40 PM

I installed a set of step 1 7/8" - 2" Kooks headers and their full 3" catted exhaust last week.Sounds good.
Car is parked for the winter now though,will put it on the dyno in the spring to see how much gain compare to with a stock setup.

10camaross · 11-03-2011, 06:01 PM

My car made 403hp with a set of pacesetter 1 3/4 headers threw stock h pipe with a muffler delete. Now it makes 436 with 2in ARH and 3in x pipe.

11-03-2011, 12:44 PM	#1
cody.freeman1 Drives: 2010 2SS/RS M6 Join Date: Oct 2010 Location: Charlotte, NC Posts: 637	Difference between 1 7/8" and 2" ARH Headers As the title states, is there any HP/TQ/Sound difference between the 2 sizes?

11-03-2011, 12:55 PM	#3
The Stig knows 2 facts about ducks Drives: ...and they're both wrong Join Date: Aug 2009 Location: The HMS Invincible Posts: 25,072 View My Garage	Minimal differences in rwhp and torque. Sound I have no idea. If you do a search there are numerous threads that discuss this topic. __________________

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11-03-2011, 12:52 PM	#2
Parag Drives: 2010 camaro 2SS LS3 Join Date: Aug 2011 Location: Denver Posts: 1,334	Everyone will give thier opinion and that really all it is, but i go with the professionals opinion, and they say that if you want only headers on a otherwise stock car go 1-3/4. If you want other goodies go 1-7/8. And if you want a 700 hp machine for track go 2

11-03-2011, 01:37 PM	#4
Juiced1 Account Suspended Drives: 2012 2SS CAMARO 45th Join Date: Apr 2011 Location: St. Charles, IL Posts: 18,663	I doubt it would make much of a sound differance. Stick with the 1 7/8 unless you plan on adding some serious power.

11-03-2011, 03:30 PM	#9
Raptor626 Account Suspended Drives: 2011 Camaro SS Summit White Join Date: Apr 2010 Location: Astoria, New York Posts: 796	Go stepped, and you'll get the best of both worlds, that is if money is of no concern to you. Good luck.

11-03-2011, 05:40 PM	#13
Motion427 Account Suspended Drives: 2010 2SS/RS Red Jewel L99 Join Date: Jun 2011 Location: NB,Canada Posts: 834	I installed a set of step 1 7/8" - 2" Kooks headers and their full 3" catted exhaust last week.Sounds good. Car is parked for the winter now though,will put it on the dyno in the spring to see how much gain compare to with a stock setup.

11-03-2011, 06:01 PM	#14
10camaross Drives: 2010 camaro ss/rs 6spd manual Join Date: Dec 2009 Location: Kiln, Mississippi Posts: 258	My car made 403hp with a set of pacesetter 1 3/4 headers threw stock h pipe with a muffler delete. Now it makes 436 with 2in ARH and 3in x pipe.