Which headers should I get for my truck, I am looking to gain some lowend torque. Thorleys are cheaper, but I haven't seen any numbers from them. I don't really care to much about coatings, just looking for best performance for the dollar. Does anybody have Thorley headers, any dyno numbers.

 

In Truck Trend magazine, they have a picture of a the new headers for our trucks, check it out. They look pretty wicked.

 

which headers are you talking about???

 

Don't bother with the ASM's the coating on mine is gone already and rusting through ...
I emailed them about and they won't even respond
My advice get the asm's and don't get them coated
You can get them done by a guy locally for $300 or so and the coating won't flake off
My truck had 14k on it and they look like **** and i have to get them recoated at 400 and that's to strip the old **** off and recoated them
sorry to vent
Just my view on ASM headers and customer service
jim

jim

 

Those were the Thorleys, remember Jet Hot is awesome with their coatings. I used them before, and then nevermore, cuase the **** works real nice, like butter and spice.

 

I like my ASMs. I got a real good deal, but they were a total pain to install. Probably 12 hours of labor total plus a new dipstick, torn hoodliner, scratched firewall and broken starter wire, but in the end it was all worth it. Be prepared for anything.

 

LOL. How did you tear the hood liner? :p

 

Hey GMC Ski what does the coating look like? So far my ASMs look allright but I havent had them that long. To be honest Im not sure if I have the ceramic coating or not.

 

I can Snap some Pics of my headers the coating is a silver color when it was new
Now there a cross between rust and silver

 

I would like to see some pics. Does the silver color look like a paint or is it a clear coating?

It took me like 10 hours to put in my headers, would have been maybe 7-8 if I had all the right tools. Didnt break anything doing the install though.

Definitely worth it! I felt some real SOTP hp/tq gains top end and throughout the whole rpm range. Wish I dynoed it before the headers though. Oh well.