Mustang3GT07

Well just got my response back from lethal and he said that the quality build of slp's are not as good as Kooks or ARH.

tws1098

Aren't kooks more expensive?

isjoining

not my vid.

http://www.youtube.com/watch?v=anh6kLiCO74

tws1098

that sounds really good, that makes up my mind

Boostaddict

Hey Jon,

Just want to clarify what I was trying to say in the PM response I sent to you. You wanted to know since the SLP's headers were coated does that make them better than the ARH or Kooks. The Kooks and ARH headers are made from T304 stainless steel. It's a higher grade steel than what SLP uses which is T409. So the fact that the SLP headers are coated in my opinion doesn't make them better. I'd rather have a 304 stainless header than a coated 409 header.

Kooks and ARH are also companies that fully specialize in headers. That's their business. Kooks has been around for a long time and has a lot of experience. ARH is a newer company but has quite a bit of experience as well. Both handcraft top notch header kits.

I personally run Kooks on both my 03 Cobra and GT500. I've built an awesome relationship with the Kooks crew over the last few years. They treat me and my customers right and deliver quality performance headers. If I'm putting a set of headers on a car of mine it's going to be Kooks. Period!

Below is a little something that will help others to learn the difference between a 304 and a 409 stainless product.

Thanks, Jared



304 vs. 409
There is a reason that the T304 systems cost more than the T409 systems. The 304 really is a more durable, higher quality stainless steel. It all starts with what goes into the alloy that makes up the tubing.

What makes stainless steel “stainless” is the addition of chromium to the alloy. Chromium creates a film that serves as a buffer against corrosion, even when it is cut or scratched. The more chromium there is in the alloy the more resistant it is to oxidization or corrosion. The addition of nickel to the alloy enhances this resistance.

T-409 has a chromium content of between 10.50 – 11.75 percent and a nickel content of .50 percent. T-304 has a chromium content of between 18 – 20 percent and a nickel content of from 8 – 10 percent. In fact, there is so much chromium and nickel content in T-304, and so little ferrous material, that a magnet will not stick to it.
A T-304 system will not rust or oxidize. It will develop a golden color over time when exposed to high heat. The T-409 has enough ferrous material in it that it will show surface oxidization, especially when exposed to salt or calcium chloride. This oxidization can be buffed off with stainless steel cleanser and a scouring pad. Rust through will not occur until well past the warranty period even under the most severe conditions.

Mustang3GT07

^^ Thank you for explaining it better, I couldn't gather the the words I wanted to say lol. Someone should sticky this info!

tws1098

I'll get it added to my threads of interest.