They are mild steel which is a problem to some. They don't tend to take the heat as well. Again, good budget headers.
header question
Melting Slicks
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Not sure what they are made of now but they used to be steel. Whatever brand you choose make sure they are stainless. 
Burning Brakes
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From: Carmel IN
TPIS longtubes are ceramic coated...will bolt up to factory pipes. going there, along with a 245 cam, in about 30 days. sweeeeeet with the corsa pace cars...non cat!!
Le Mans Master
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From: Oakville Ontario,Canada
Ive had my ceramic coated TPIS headers for a few years with NO problems at all, before I did the engine mods I had them hooked up to the Corsa Pace exhaust and they sounded amazing... Now with everything else Ive done, they sound incredible. I've always had good dyno results with them and they still look new. Mine are ceramic coated and I dont think they are budget headers at all. You can see the quality of fit and finish, TPIS is a great shop with really good LS1 products. LG's and Kooks are great headers and are the latest craze on the forum, back a couple years it was TPIS. Long story short, you will NOT be disappointed with these.
Last edited by GettReal; Feb 15, 2008 at 10:25 PM.
Instructor
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From: Extreme Madness
Header Question
I have to agree with Chris's previous comment;
"Not sure what they are made of now but they used to be steel. Whatever brand you choose make sure they are stainless"
For me the problem with any mild steele/ceramic coated header is one of longevity. Under certain conditions peolple have reported that these headers will rust. That was an issue for me. I've never heard of anyone reporting stainless steele rusting. That quality was the reason why I narrowed my choices to stainless steele products.
I chose LG Steets because they are the best value in price and quality for someone not looking to go with "radical" hp. They are awesome!
Just my humble opinion.
"Not sure what they are made of now but they used to be steel. Whatever brand you choose make sure they are stainless"
For me the problem with any mild steele/ceramic coated header is one of longevity. Under certain conditions peolple have reported that these headers will rust. That was an issue for me. I've never heard of anyone reporting stainless steele rusting. That quality was the reason why I narrowed my choices to stainless steele products.
I chose LG Steets because they are the best value in price and quality for someone not looking to go with "radical" hp. They are awesome!
Just my humble opinion.