lookin 4 a set of headders 4 my 03' 4.7 dak. im leanin more towards shortys so i dont hav2 mod the downpipes. i plan on wraping the headers with headder wrap so i dont want any stainless, chrome, or ceramic coatings...who makes the best set for this motor& 4 the best price.what r yall runnin?

 

fyi you might want to spend money on something else. 4.7 exhaust manifolds were built to flow within 2% of headers so you wont see any performance gain.

 

r u serious? thats awesome! where did you hear that?

 

it used to be on allpar.com but it may be gone now, i have heard it from a few other people though. If you're looking for performance out of the exhaust take it to a shop and have them get rid of the stock y-pipe and the third cat, or gut it yourself. The stock y-pipe is very restrictive and you can free up about 10-15 horsepower just by removing that. Add yourself a nice muffler and you've got a nice sounding v-8 also. The only reason you would need headers on a 4.7 is if the engine is supercharged or turbo'd and you need to get the exhaust out faster.

 

I agree on a stock truck don't bother with headers. Just make sure you have a good muffler flowmaster 40 is the favorite and if it is legal in your state remove the cat

 

remove it or get a high flow third cat, it dont think it will affect the truck's computer, just be sure to get a better y-pipe.

 

if i gut all 3cats will my coomputer go nuts? just tryn 2 figure out a good plan of attack

 

uhh im pretty sure, the main thing is to get rid of the stock ypipe. The third cat should be after all the 02 sensors so it wont affect anything.

 

Im havin exaust work done n the next few weeks already...so im thinkin bout replacing the y-pipe...do i hav 2 hav 1 custom bent or does a company make a replacement?

 

im not sure do a search on www.summitracing.com
if theres not one on there just have one custom bent, im no expert on 4.7's.