Generation III External Engine LS1 | LS6 | Bolt-Ons | Intakes | Exhaust | Ignition | Accessories
Sponsored by:
Sponsored by:

Last question before ordering catted ARHs

Thread Tools
 
Search this Thread
 
Old Aug 17, 2008 | 10:28 AM
  #1  
Predator's Avatar
Thread Starter
TECH Addict
 
Joined: Jun 2002
Posts: 2,428
Likes: 0
From: Las Vegas, NV
Question Last question before ordering catted ARHs

I'm wondering why I should order ARHs over Kooks? I read through some of the threads here but still not 100% sure. Kooks seem to be a little cheaper, same 304 SS, WBO2 welded-in, new merge collector.

It seems the advantage ARHs seems to have is a better y-pipe and cats, and better fitment (although that seems to be debatable).

Is this a case of apples and oranges, or are ARHs better, albeit more expensive?

I wouldn't mind saving some money if there's no appreciable difference between the two. Thanks.
Reply
Old Aug 17, 2008 | 10:38 AM
  #2  
sroach20's Avatar
TECH Addict
iTrader: (31)
 
Joined: Dec 2002
Posts: 2,318
Likes: 1
From: houston, Texas
Default

i went with the arh headers because of the y-pipe.
Reply
Old Aug 17, 2008 | 10:54 AM
  #3  
Predator's Avatar
Thread Starter
TECH Addict
 
Joined: Jun 2002
Posts: 2,428
Likes: 0
From: Las Vegas, NV
Question

Originally Posted by sroach20
i went with the arh headers because of the y-pipe.
sroach, what makes the ARH's y-pipe better? Thanks.
Reply
Old Aug 17, 2008 | 11:13 AM
  #4  
lastcall190's Avatar
TECH Addict
iTrader: (36)
 
Joined: May 2004
Posts: 2,656
Likes: 4
From: NJ
Default

I'm not sroach, but it's the merge. Look at the Kooks Y, the merge seems like an afterthought, one pipe just joins into the side of the other. The ARH is an actual merge that smooths out the flow (first part is right, second part I just tried to use common sense to word it...). And from what I've seen, Kooks are MORE expensive than the ARH... (apples to apples, as in catted Y and similar sizes). Besides the merge, the y-pipes are similar (I had a kooks catted Y right before the ARH so I had a hands on deal with both). HTH.

-J
Reply
Old Aug 17, 2008 | 11:45 AM
  #5  
Predator's Avatar
Thread Starter
TECH Addict
 
Joined: Jun 2002
Posts: 2,428
Likes: 0
From: Las Vegas, NV
Thumbs up

Originally Posted by lastcall190
I'm not sroach, but it's the merge. Look at the Kooks Y, the merge seems like an afterthought, one pipe just joins into the side of the other. The ARH is an actual merge that smooths out the flow (first part is right, second part I just tried to use common sense to word it...). And from what I've seen, Kooks are MORE expensive than the ARH... (apples to apples, as in catted Y and similar sizes). Besides the merge, the y-pipes are similar (I had a kooks catted Y right before the ARH so I had a hands on deal with both). HTH.

-J
Thanks lastcall. I'm still all set on the ARHs. I think the merge in the Kooks has been improved though:

https://ls1tech.com/forums/showthrea...ht=kooks+merge

One thing I don't like about the Kooks is that WBO2 is aligned with the O2 bung. The WBO2 bung is now standard issue.

I'll take your word on the y-pipe, and thanks for the heads up.

Ordering ARHs tomorrow.
Reply




All times are GMT -5. The time now is 06:11 AM.

story-0
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

Slideshow: This heavily modified 1971 Camaro mixes classic muscle car styling with a fifth-generation Camaro interior and modern LS3 power.

By Verdad Gallardo | 2026-05-12 18:06:42


VIEW MORE
story-1
6 Common C5 Corvette Failures and What's Involved In Repairing Them

Slideshow: From wobbling harmonic balancers to failed EBCMs, these are the issues that define long-term C5 ownership and what repairs typically involve.

By Pouria Savadkouei | 2026-05-07 18:44:57


VIEW MORE
story-2
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

Slideshow: A modern Camaro transformed into a retro icon, this limited-run "Bandit" build blends nostalgia with brute force in a way few revivals manage.

By Verdad Gallardo | 2026-04-21 13:57:02


VIEW MORE
story-3
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

Slideshow: Cadillac didn't just crash the high-performance luxury vehicle party, it showed up loud, supercharged, and occasionally a little unhinged...

By Pouria Savadkouei | 2026-04-16 10:05:15


VIEW MORE
story-4
Top 10 Most Powerful Chevy Trucks Ever Made!

Slideshow: Top ten most powerful Chevy trucks ever made

By | 2026-03-25 09:22:26


VIEW MORE
story-5
Hennessey's New Supercharged Silverado ZR2 Has 700 HP

Slideshow: Hennessey has turned the Silverado ZR2 into a 700-hp off-road monster with supercharged V8 power and a limited production run.

By Verdad Gallardo | 2026-03-24 18:57:52


VIEW MORE
story-6
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

Slideshow: A one-off sports car that looks like a vintage Italian exotic-but hides a C6 Corvette underneath-just sold for the price of a new mid-engine Corvette.

By Verdad Gallardo | 2026-03-23 18:53:41


VIEW MORE
story-7
Awesome K5 Blazer Restomod Comes With C7 Corvette Power

Slideshow: A heavily reworked 1972 K5 Blazer swaps its off-road roots for a low-slung street-focused build with modern V8 power.

By Verdad Gallardo | 2026-03-09 18:08:45


VIEW MORE
story-8
10 Camaros You Should Never Buy

Slideshow: There are thousands of used Camaros on the market but we think you should avoid these 10

By | 2026-02-17 17:09:30


VIEW MORE
story-9
10 LS Engine Myths That Refuse to Die

Slideshows: Which one of these myths do you believe?

By Verdad Gallardo | 2026-01-28 18:10:11


VIEW MORE