View Poll Results: Headers
Kooks
6
3.77%
Borla
9
5.66%
Dynaflow
0
0%
Edelbrock
10
6.29%
Pacesetter
44
27.67%
Hooker
7
4.40%
JBA
29
18.24%
Headman
6
3.77%
Dynomax
3
1.89%
Gibson
17
10.69%
Doug Thorley
3
1.89%
OTHER (please specify in a post)
25
15.72%
Voters: 159. You may not vote on this poll
Headers
i got it at shop hemi.com for 8k
09- and up is little work
- 08 not so muck
alot work and alot of parts important parts 09- timing cover, 1k, and a intake mani adapter, $100, that magnuson can sell and i had i shop do it so it cost 5.5k in labor with tuning.
4.5k in parts
so 18k total but not every thing should have been order. the manifold adapter and timing cover are required
Veteran
Joined: Jun 2012
Posts: 400
Likes: 0
From: Woodbury Tn
For those not familiar with headers and the benefits they provide:
Headers are one of the easiest bolt-on accessories you can use to improve an engines performance. The goal of headers is to make it easier for the engine to push exhaust gases out of the cylinders.
During the exhaust stroke, a good way for an engine to lose power is through something called back pressure. The exhaust valve opens at the beginning of the exhaust stroke, and then the piston pushes the exhaust gases out of the cylinder. If there is any amount of resistance that the piston has to push against to force the exhaust gases out, power is wasted.
In a normal engine, once the exhaust gases exit the cylinder they end up in the exhaust manifold. It is here that exhaust gases from one cylinder build up pressure in the manifold that affects the next cylinder that uses the manifold.
Headers contain an indiviual pipe for each cylinder which come together in a larger pipe called the collector. The individual pipes are cut and bent so that each one is the same length as the others. By making them the same length, it guarantees that each cylinder's exhaust gases arrive in the collector spaced out equally so there is no back pressure generated by the cylinders sharing the collector. The longer these pipes are, the more efficient the "scavenging" effect of exhaust gasses takes place, thus more HP is generated...
Headers are one of the easiest bolt-on accessories you can use to improve an engines performance. The goal of headers is to make it easier for the engine to push exhaust gases out of the cylinders.
During the exhaust stroke, a good way for an engine to lose power is through something called back pressure. The exhaust valve opens at the beginning of the exhaust stroke, and then the piston pushes the exhaust gases out of the cylinder. If there is any amount of resistance that the piston has to push against to force the exhaust gases out, power is wasted.
In a normal engine, once the exhaust gases exit the cylinder they end up in the exhaust manifold. It is here that exhaust gases from one cylinder build up pressure in the manifold that affects the next cylinder that uses the manifold.
Headers contain an indiviual pipe for each cylinder which come together in a larger pipe called the collector. The individual pipes are cut and bent so that each one is the same length as the others. By making them the same length, it guarantees that each cylinder's exhaust gases arrive in the collector spaced out equally so there is no back pressure generated by the cylinders sharing the collector. The longer these pipes are, the more efficient the "scavenging" effect of exhaust gasses takes place, thus more HP is generated...
Hammer, I have a question for you. I have BBK shorties on my truck with Magnaflow spun hi flo cats connecting to the shorties in the stock location. Ever since I did this mod I have gotten a chk engine light for cat ineffiency. A buddy told me he tricked his computer by raising the rear o2 sensors with adaptors. I tried this and it never worked for me. Do you know of any more tricks that I might try so that the light will stay out...Thanks in advance
Rookie
Joined: Feb 2013
Posts: 75
Likes: 0
From: NJ
I am in the same boat man. I have been looking for longtubes that dont cost $1500. I really would want to put shorties on if I could help it. I havent had time to look under a 1500 and compare to a 2500 but I believe that the frame will get in the way to put in long tubes. I would like to get a set of american racing or tti longtubes and do a true dual exhaust on my 2500. But all you need is money haha.
Thread Starter
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Administrator
Joined: Jul 2007
Posts: 24,686
Likes: 21
From: South Georgia/East Florida
Hammer, I have a question for you. I have BBK shorties on my truck with Magnaflow spun hi flo cats connecting to the shorties in the stock location. Ever since I did this mod I have gotten a chk engine light for cat ineffiency. A buddy told me he tricked his computer by raising the rear o2 sensors with adaptors. I tried this and it never worked for me. Do you know of any more tricks that I might try so that the light will stay out...Thanks in advance
Champion
Joined: Aug 2010
Posts: 2,697
Likes: 3
From: Cape Carteret NC
Butting into your conversation old man and hammer, there is another way to trick them..
Every o2 sensor has external vents.. they are on the outside and go around the circumference of the plate thingy the wires go in to.. the sensor samples inside and outside air, and the filament between those ports is where voltage is measured and where the reading comes from.. it compares the two readings, in other words..
Some folks have had success simply blocking those ports.. I did it once, with aluminum tape.. the tape didn't last long, though.. I got a light, looked to see, and sure enough the tape had became road debris somewhere along the way..
Every o2 sensor has external vents.. they are on the outside and go around the circumference of the plate thingy the wires go in to.. the sensor samples inside and outside air, and the filament between those ports is where voltage is measured and where the reading comes from.. it compares the two readings, in other words..
Some folks have had success simply blocking those ports.. I did it once, with aluminum tape.. the tape didn't last long, though.. I got a light, looked to see, and sure enough the tape had became road debris somewhere along the way..
Rookie
Joined: Jan 2011
Posts: 52
Likes: 1
From: Texas
it is a magnuson.
i got it at shop hemi.com for 8k
09- and up is little work
- 08 not so muck
alot work and alot of parts important parts 09- timing cover, 1k, and a intake mani adapter, $100, that magnuson can sell and i had i shop do it so it cost 5.5k in labor with tuning.
4.5k in parts
so 18k total but not every thing should have been order. the manifold adapter and timing cover are required
i got it at shop hemi.com for 8k
09- and up is little work
- 08 not so muck
alot work and alot of parts important parts 09- timing cover, 1k, and a intake mani adapter, $100, that magnuson can sell and i had i shop do it so it cost 5.5k in labor with tuning.
4.5k in parts
so 18k total but not every thing should have been order. the manifold adapter and timing cover are required