headers
Thread Starter
Junior Member
Joined: Sep 2001
Posts: 52
Likes: 0
From: Weston, Ma, US
headers
I'm sure this is the first time you are reading this, but I am just starting out with working on my 305TBI firebird. I have done hte open element, and the swithc to a ram air hood, and it looks like the logical next step is to upgrade the "headers". I thought I had a pretty good idea of an engine and the occult details of how it works. But I don't know what "headers" are and I can't find a tech article explaining it. What kind of mod is this, where can I get info on how to do it, and where can I get the actual "headers"?
Any help would be nice. As would any monetary donations to myself or a new car or something
Thanx in advance,
- Henry
Any help would be nice. As would any monetary donations to myself or a new car or something
Thanx in advance,
- Henry
Senior Member
Joined: Jun 2001
Posts: 649
Likes: 0
From: cary,nc,usa
hey man, welcome to thirdgen. headers are not stock on camaros, they come with exhaust manifolds. thse are the usually rusty looking things on the outside of the engine coming off of the heads. they are passageways for the exhaust coming from the valves in the engine.
assuming you want to keep a street lagal motor I would get headers from slp or edelbrock, and I think dynomax also. a good set of headers will run anywhere from $300-$600 for coated. Take a look at www.slponline.com and find the 1 5/8" headers. those are a great set of headers for f-bodies with 305s.
------------------
'86 IROC 5-speed
305 LG4
edelbrock performer rpm intake
edelbrock 600 cfm carb
msd pro billet hei distributer
'95 3.23 rearend
hotchkis rear suspension
PST front polygraphite suspension
"speed kills. buy a f@&d, live forever."
assuming you want to keep a street lagal motor I would get headers from slp or edelbrock, and I think dynomax also. a good set of headers will run anywhere from $300-$600 for coated. Take a look at www.slponline.com and find the 1 5/8" headers. those are a great set of headers for f-bodies with 305s.
------------------
'86 IROC 5-speed
305 LG4
edelbrock performer rpm intake
edelbrock 600 cfm carb
msd pro billet hei distributer
'95 3.23 rearend
hotchkis rear suspension
PST front polygraphite suspension
"speed kills. buy a f@&d, live forever."
Supreme Member
Joined: Jan 2001
Posts: 2,463
Likes: 0
From: Annandale,NJ
what abou the Heddman TES headers with Y-pipe 309.99 from Jegs
------------------
1987 Black 305 TPI 5spd IROC, seems to be fully loaded, but can't find RPO codes.
AIM: IROC 5spd
http://www.geocities.com/chevy5spdiroc/87Roc.htm
------------------
1987 Black 305 TPI 5spd IROC, seems to be fully loaded, but can't find RPO codes.
AIM: IROC 5spd
http://www.geocities.com/chevy5spdiroc/87Roc.htm
Senior Member
Joined: Jun 2001
Posts: 649
Likes: 0
From: cary,nc,usa
I have not seen these and have heard nothing about them but you should defitly consider them, though whatever header you get, it is a good idea to get them coated.
------------------
'86 IROC 5-speed
305 LG4
edelbrock performer rpm intake
edelbrock 600 cfm carb
msd pro billet hei distributer
'95 3.23 rearend
hotchkis rear suspension
PST front polygraphite suspension
"speed kills. buy a f@&d, live forever."
------------------
'86 IROC 5-speed
305 LG4
edelbrock performer rpm intake
edelbrock 600 cfm carb
msd pro billet hei distributer
'95 3.23 rearend
hotchkis rear suspension
PST front polygraphite suspension
"speed kills. buy a f@&d, live forever."
Senior Member
Joined: Dec 2000
Posts: 886
Likes: 0
From: Raleigh, NC, USA
Headers replace the exhaust manifolds on our cars. As stated above, the exhaust manifolds are those rusty things that are making it really hard for us to change our spark plugs. The stock setup is basically just a pipe that runs down each side of the block and joined by the y-pipe, which then goes into the rest of the exhuast.
Because of the way the exhaust manifolds are designed, the exhaust gasses do not freely flow out, they are rather restricted. This is where headers come in. You'll notice when you get a set of headers how different they look from ordinary exhaust manifolds. They consist of four pipes (per side) bent and twisted around, but generally of equal lenght. These pipes then go into a colector, and then they go into the y-pipe.
When a cylinder spits out exhaust gas, it creats a little burst of compressed air and gasses. As this moves through a pipe, it leaves a bit of a vacuum behind it. Headers take advantage of this. The vacuum helps to suck out more exhuast gas from the cylinder than regular exhaust manifolds do, thus making more room for fresh fuel and air. This increases not only horsepower but also gas mileage. Headers are shaped to try to maximize the effects of this. If the pipes are too small, too much pressure results and the not all of the exhaust gasses will be sucked out. If the pipes are too big, not enough of a vacuum will be created. Length also plays a part. Some people put quite a bit of effort into designing the perfect headers, trying to maximize power.
Also headers tend to run very hot, so you wouldn't want to get any spark plug wires too close to them or they'll melt.
------------------
89 iroc-z 305 tbi
k&n filtercharger, open element air filter. nuffin' else
Because of the way the exhaust manifolds are designed, the exhaust gasses do not freely flow out, they are rather restricted. This is where headers come in. You'll notice when you get a set of headers how different they look from ordinary exhaust manifolds. They consist of four pipes (per side) bent and twisted around, but generally of equal lenght. These pipes then go into a colector, and then they go into the y-pipe.
When a cylinder spits out exhaust gas, it creats a little burst of compressed air and gasses. As this moves through a pipe, it leaves a bit of a vacuum behind it. Headers take advantage of this. The vacuum helps to suck out more exhuast gas from the cylinder than regular exhaust manifolds do, thus making more room for fresh fuel and air. This increases not only horsepower but also gas mileage. Headers are shaped to try to maximize the effects of this. If the pipes are too small, too much pressure results and the not all of the exhaust gasses will be sucked out. If the pipes are too big, not enough of a vacuum will be created. Length also plays a part. Some people put quite a bit of effort into designing the perfect headers, trying to maximize power.
Also headers tend to run very hot, so you wouldn't want to get any spark plug wires too close to them or they'll melt.
------------------
89 iroc-z 305 tbi
k&n filtercharger, open element air filter. nuffin' else
Supreme Member
Joined: Jan 2001
Posts: 7,164
Likes: 1
From: Someone owes me 10,000 posts
Car: 99 Formula
Engine: LS1
Transmission: T56
Axle/Gears: 342
I wouldn't say that the wires would melt, rather they would crack to where you could see the internals, at least that is what has happened to me twice, so make sure you keep them away from the headers. This will cause backfires and severe loss in power.
------------------
"Rice burners are like tampons...Every pu$$y has to have one"
'86 IROC
T-TOPS, TINTED WINDOWS, BRAKE LIGHT BLACKOUTS
GM GOODWRENCH 350
EDELBROCK TES HEADERS
3" Hooker CatBack w/Aero Chamber muffler
EDELBROCK 600CFM CARB.
KN AIRFILTER
ACCEL HEI DISTRIBUTOR
160* Stat
3:73 Posi
Rebuilt 700R4
B&M Megashifter, 5" Autometer Tach w/shift lite
------------------
"Rice burners are like tampons...Every pu$$y has to have one"
'86 IROC
T-TOPS, TINTED WINDOWS, BRAKE LIGHT BLACKOUTS
GM GOODWRENCH 350
EDELBROCK TES HEADERS
3" Hooker CatBack w/Aero Chamber muffler
EDELBROCK 600CFM CARB.
KN AIRFILTER
ACCEL HEI DISTRIBUTOR
160* Stat
3:73 Posi
Rebuilt 700R4
B&M Megashifter, 5" Autometer Tach w/shift lite
Thread
Thread Starter
Forum
Replies
Last Post
redformula88
Engine/Drivetrain/Suspension Parts for Sale
2
Oct 14, 2015 06:08 PM
