SS_bnoon_SS

iTrader: (3)

I don't know if any of the sponsors have collector design models to work from, but I have used Burns Stainless in the past. You can have them make just about anything on their site in mild steel or stainless and they work from the size of the engine, tube length, cam specs, intake specs, etc to end up with a true race style collector. If you're searching for better collectors out there in cyberspace, use the term "merge collector" if you want something better than what comes on most off of the shelf headers. Once I'm ready to change my existing catback setup, I'll probably be using a set of merge collectors in a nice stepped config from Burns.

BlackGMC

iTrader: (31)

This should help, but header collectors are not bolt on, you would have to cut off the collector on the header the weld on one of these

http://store.summitracing.com/egnsea...81&D=%2D101981

Nasty73z

I think you all might be confused about the collector length. The "collectors" of these headers were meant to be extended in length by the y-pipe that the kit normally comes with. These headers were never sold seperately. All you have to do is have a y-pipe fabricated, and set your desired length (probably another 10" or so).


Oh and Flowmaster and other companies sell Y-junctions that are dual 2.5" into 3" single which will be needed for a clean and smooth junction.
See here:
http://www.jegs.com/webapp/wcs/store...0002_695230_-1
And here:
http://www.jegs.com/webapp/wcs/store...0002_242502_-1

You should be able to have the y fab'd and have a set of ceramic coated long tubes all for under $325.

southern_chevy

iTrader: (9)

Ya they only retailed for 946.91 for the 02-05 ones with Y pipe and cats

RedHot04

iTrader: (1)

Guys, been thinking it over and pictured below "header collectors" are what you want. Also, the difference between these headers and others like Pacestter is it's gonna have to be a 2-1/2" 3 bolt, collector flange (not 3"). Looks like a production goof, since most shorty headers have 2-1/2" flanges and Long tubes mostly have 3" flanges or 3" slip on outlet. No biggie to overcome. The Pacesetter Y pipe could be adapted to fit this setup, with cats or without cats pretty easily with a couple of reducers I think, or go with an X-pipe or true duals instead. Just hope they shine like Pacesetters do... Any comments on this Nasty73z?

So total investment>>>shipped = $350 bucks (not including Cats)
1. Headers $150 (approx.)
2. Collectors $40
3. 2 Reducers $20
4. ORY $140

These are 2-1/2" header collectors.
Includes: (2) 2-1/2'' 3 hole flanges, (2) 2-1/2'' 3 hole gaskets, (2) 2-1/2'' flanged 14 gauge aluminized pipes 8" long. No O2 bungs


same thing with O2 bungs welded in.


Pacesetter ORY:

moregrip

iTrader: (8)

try this:

http://www.carcraft.com/techarticles...rbs/index.html

BlackGMC

iTrader: (31)

I when I mentioned header collectors I was refering to weld-on collectors. Like this:


What I was talking about was cutting off the small collector on the headers and welding on one of these. Not just bolting a 2.5in pipe to the end of the header. The reason would be to give the 4 pipes more room to merge, thus increasing exhaust scavenging...

moregrip

iTrader: (8)

if it was me I'd be looking for something like this to bolt to those headers:

southern_chevy

iTrader: (9)

just cut of the one on the headers and weld on those and you could have a 3" collector then. right? I think that is what you are getting at moregrip

moregrip

iTrader: (8)

that defeats the whole purpose of having a merge collector, I would just find a 2.5" to 3" transition and bolt those on to have a badass set of headers, no need to cut off those merge collectors