[BlaqWhole]

Originally Posted by Can'tHave2MuchHP

Well, however good and well cooled the 6th ZL1 is...

We all know that the LT4 itself is a HOT motor. And though no body can get it to overheat in stock form on the ZL1, who knows what might happen after you wind up the stock Heaton blower. That 10-20 degree under the hood temps might be worth it. (Especially true for people that don't plan on a cam swap, ahem.)

No cam swap for me. And no pulley swap either. I decided I'm going straight for the money...Whipple 2.9L with headers. I'm halfway tempted to go PC but that might be way more money than I wanna spend.

[nicktechla]

Even if not needed, if you can get some heat out of there, it's not going to hurt

[Evolvedx27]

check out Swain Tech. White Lightening. If you're spending the money on headers then just spend the extra couple hundred to get a quality coating. From my research people have experienced a few hundred degree difference after the coating. The exhaust will be more efficient and for every 30 degrees cooler is like 1% increase in hp. Don't quote me on those exact numbers but its around there. Bottom line is your car will make a little more power with quality coated headers.

[Infern0]

Originally Posted by Rumer10

Thanks for all the feedback on brands and sizes! I'm going with Stainless works because I'm getting a huge discount for letting them use my car for test fitment on some of their options. But also I am curious about coating the headers. I was planning on it but the guy at Stainless works pretty much said don't waste my money unless I'm using it as a full on track car, otherwise it should never get hot enough to make much difference...thoughts??

Gotta think that guy might know a little something about the topic too.

When I got my 5th Gen SS (mods in sig) I was told the same thing. Coating for standard road monsters that aren't trailer queen type racers really aren't going to see that big of a benefit (that doesn't mean no benefit - it means to benefit from the cost you're adding to get it).

[JB'sZL1]

The. other benefit(s) that have yet to be mentioned are protecting the headers, and, great looks. Acids and salts are corrosive to ss, and exhaust gasses are as well to the interiors. Certain parts of the headers get "hotspots", invariably at the bends, and these corrode quicker than the straights. Ceramic minimizes or eliminates these corrosive interactions, extending the life of the headers.

With the cost of headers, plus installation, gaskets, and bolts, I think $300-$400 is cheap life extension.

[seddon]

This this is very helpful, i decided to go with 2 inch arh long system into stock mufflers. Also no cats.

[Can'tHave2MuchHP]

Originally Posted by seddon

This this is very helpful, i decided to go with 2 inch arh long system into stock mufflers. Also no cats.

The best choice there is IMO. You'll love it. Just make sure you get it tuned.

[Rlhay2]

Originally Posted by seddon

This this is very helpful, i decided to go with 2 inch arh long system into stock mufflers. Also no cats.

I plan on doing the same except adding ceramic coating to the headers.

[S.T.A.R.]

The TSP's are made in China, any concerns?

[chrest]

Originally Posted by S.T.A.R.

The TSP's are made in China, any concerns?

I just received some TSP 2in LTs just yesterday and i am very happy with the quality all around upon my initial inspection of them. Welds all look great, they have the "collector cone" and the connection pipes look good.

Fitment wise, the driver side slid RIGHT in, couldn't have been more easy. Haven't tackled the passenger side yet though.

[S.T.A.R.]

Thanks

[seddon]

Originally Posted by S.T.A.R.

The TSP's are made in China, any concerns?

I have always used ARH, they are pricey but they are good.

[seddon]

Anyone running NO cats, im thinking of deleteing both cats. Basically headers straight to stock muffler.

[JeromeS13]

Originally Posted by seddon

Anyone running NO cats, im thinking of deleteing both cats. Basically headers straight to stock muffler.

That's what I'm running. Kooks 1 7/8" headers to Borla 60606 midpipe, into the OEM NPP muffler. It's a little raspy, but loud (when you want it to be).