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Old 07-23-2019, 03:57 PM   #60
drfeelgood

 
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Drives: 2017 ZL1 Convertible A10
Join Date: Aug 2017
Location: San Gabriel, CA
Posts: 993
Quote:
Originally Posted by Jason18ZL1LE View Post
Is no one going to talk about the quality of steel? I’ve seen “cheap” headers literally rust through due to condensation where as better quality headers do not.

Fitment is only half the story... you want them to fit AND last... then there is the weld quality, weld type and this is all on top of the tuning of header length and fitment.

I feel many of you commenting on this topic only consider the basic of ideas behind design.
Most have Kooks or ARH. Both made in USA, both top notch regarding quality and longevity. The few complaints from Kooks was on the 2" possible rubbing against the drive shaft. No issues regarding fitment on the Kooks 1 7/8"

ARH:
* 304 stainless steel headers
* TIG welded
* Mandrel Bent
* 049 thickness
MADE IN USA

Next, slightly less popular are Stainless Works:

* 304 stainless steel headers
* TIG welded with 3/8" thick flanges
* 3" diameter slip fit collectors with merge spikes
MADE IN USA

Below Kooks/ARH/Stainless are

TSP , Pacesetters, and OBX

OBX specs:
Full Length Tube Design
Mirror Polished Finish
Made of 304-Grade Stainless Steel
Inlet Port Design: Square Port (2.0" x 1.8")
Primary Tube: 2.0" OD
Collector: 3.4" OD
Piping: 3.0" OD
Flange Thickness: 0.40"
Runner Wall Thickness: 16 Gauge (1.5mm)
Made in China

There are some who have had a lot of success with OBX

https://www.camaro6.com/forums/showthread.php?t=532404

other snot so much

https://ls1tech.com/forums/cadillac-...st-review.html


I think that if you look at quality, you can't beat ARH and Kooks

If you want a bargain, and fitment that could be great or could be off, take your chances on the Chinese made stuff.

So I disagree, many people have spoken on these specifics in one thread or another... but the general and most popular consensus seems to be, stick with ARH and Kooks, if for no other reason, being MADE in AMERICA!!!!!
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'17 White ZL1 A10 Convertible - TM ported TB - RotoFab CAI - 2.3" griptech upper pulley - Kooks 1 7/8" Headers with High Flow Cats - Borla S-type Catback - Audio Overhaul - NavTV M650-GM - 20" BlackDiForza- Michelin Pilot Sport4S - Tuned at BRC Raceworks (606rwhp/675trq)

'14 CTS-V Coupe - ZL1 lid - Ported TB - Ported Snout - AirRad CAI - 8.66" lower - 2.55" upper- Greenbelt - SW Headers - SW Catback - Varimax Intercooler Pump - Track Attack Intercooler-Tuned at BRC Raceworks (551rwhp/516trq)

'17 Maserati Levante- STOCK
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