Headers

peppersac · March 1, 2005

I am fixing to install OBX headers on my 02 gmc 5.3L. is there anything i should do before or after like with sensors or anything? also are there any better headers than obx? i havent bought them yet so maybe some ideas!!

ridnlow · March 1, 2005

As long as you get long tubes you will be ok.. Shorties are a waste of money on these newer trucks.. Try Arizona Speed & Marine, TOG, Thorley Tri-Y and there is also some new Pacesetter longtubes out for these trucks that are like 399.99

99Silver6.0 · March 2, 2005

The PaceSetters are sweet!!! Plus they also make a nice ORY thats pretty inexpensive too!! Coatings on the ASM headers sucks. The TOG's are some beefy, tough well built headers.

peppersac · March 2, 2005

why are long tubes better??

99Silver6.0 · March 2, 2005

why are long tubes better??

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More power. Shorts will net you 5-10HP if your lucky. Good set of LT's will get you in the neighborhood of 20-25RWHP.

peppersac · March 2, 2005

wonder what the theory is behind that?

99Silver6.0 · March 2, 2005

wonder what the theory is behind that?

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The primary tube length and size is where its at. But thats the way it is on power gains. Shorts do not net much.

XLR8NDSL · March 3, 2005

OBX = Civic Header

PaceSetter = don't they make monza tips from back in the day?

If you want a Quality Header go BASSANI XHAUST!!!

I run there full system headers, x-pipe, and aft-cat sytem on my 02 vette.

They are Top quality!!! www.bassani.com they do not sell direct but just ask for a major dealer and they will get you a toll free number to someone. I got my vette stuff from CBI distributing. I forgot the phone number.

peppersac · March 3, 2005

they dont make exhaust for my truck. Also it looks like long tube headers wont fit on my truck.

XLR8NDSL · March 3, 2005

they dont make exhaust for my truck. Also it looks like long tube headers wont fit on my truck.

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Who told you that???

02-04 silverado/sierra Headers 531500 Chorme / 531500C Ceramic Coated

Looks like you have a standard cab short bed?...

Aft- Cat System SS# 5315005 BX# BX5315005

Call "Nate" at Bassani Xhaust, He will get you hooked up (866)782-3283

malibu795 · March 3, 2005

here is the diff between shortiean adn long tubed heads. when the air is burned the air explans this is common knowledge. what most peopl dont know if you can cool it it whill create a vacum. the ideal was use steel that displace heat far better than cast iron to do this. the longer the tube the better cooling happen and more of a vacum is created. the common length is 28-32" long. anything longer is serious race. this vacum is called scavanging. the same principle is apide in the tri-ys lets say cylinders 2-4-6-8 2 and 4 are conected and 6 and 8 conected two fires goes down the tube and scavanges 4 right before its done firing. this helps the expelling of exhaust gases from 4 and freeing up power. then 2 and 4 go to the collector and scavange 6 and 8. h-pipe x-pipes do the same between both banks. thus freeing up hp and torque. now the difference is shorties were designed for convined areas like 350 in a s-10 and shuch. the genrally improve hp and not torque. long tube help out torque mor than hp.

hope this helps

wildman

99Silver6.0 · March 4, 2005

If you want a Quality Header go BASSANI XHAUST!!!

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Negative!!! Bassani only makes shorts or code named "optimum length" headers for our trucks. JBA maks the best set of shorties for the NBS LSx base motor. That aside, go for long tubes and nothing else. Save your money. Spend it on something that will make some power. Short tube headers are not worth what they cost or the trouble to put them on. Save up, get some TOG or cerami-coated Thorley headers and you WILL be happy with your investment. I can guarantee that!

budhayes3 · March 4, 2005

What's the word on that Dynatech header-Y pipe system? (puttin the huge price tag aside) Good quality and fitment? Good gains? How about on a stock or mildly modded engine? Seems like something I'd like to add to the wish list (way down on the bottom due to price, unfortunately) Is is a direct bolt in, or is there welding required?

99Silver6.0 · March 4, 2005

What's the word on that Dynatech header-Y pipe system? (puttin the huge price tag aside) Good quality and fitment? Good gains? How about on a stock or mildly modded engine? Seems like something I'd like to add to the wish list (way down on the bottom due to price, unfortunately) Is is a direct bolt in, or is there welding required?

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Its expensive. Just throwing that out there. Headers and a y-pipe. Why dont ya just get some LT's and go get a y-pipe fabbed up. Cheaper that way. Gains between a custom setup and the Dynas will be very minimal if any. No welding on the Dynatech stuff. Its got 3-bolt flanges w/ball and socket joints everywhere.

MyBigToy · March 4, 2005

There have been several people who commented that they had problems with clearance between the passenger-side downtube and the frame on the Dynatechs. Other than that, it's a bolt-on and all the comments I have heard have been positive.

I bought a set of ceramic-coated TOG's used and really like them. Unless you can weld you have to have an exhaust shop weld a new flange on the front of the y-pipe.