Diesel Headers
Senior User
Joined: Aug 2006
Posts: 149
Likes: 1
what kind of peppier are you talking about?
it seems headers should give a decent amount of power with the right exhaust system. my 6.9 has 420 ci I think. giving that engine an easier way to get that exhaust out seems like it could add 30+ hp.
if only I had the money...
it seems headers should give a decent amount of power with the right exhaust system. my 6.9 has 420 ci I think. giving that engine an easier way to get that exhaust out seems like it could add 30+ hp.
if only I had the money...
Elder User
Joined: Jul 2005
Posts: 969
Likes: 1
From: North Texas
Originally Posted by tjc transport
many years ago, i put my 88 on a dyno when it had the 5 speed trans, open exhaust, turned up pump, and 35 inch tires. results at the wheels was 325 hp with open pipes at 17+ lbs of boost
it now is running a C6, 36 inch tires, and open pipes with the pump turned back, so i am figuring on between 275-290hp at the wheels, because i am averaging 8-12 lbs of boost.
it now is running a C6, 36 inch tires, and open pipes with the pump turned back, so i am figuring on between 275-290hp at the wheels, because i am averaging 8-12 lbs of boost.
Senior User
Joined: Jul 2006
Posts: 136
Likes: 0
From: Eastern NC
i was wondering the same thing with the 4wheel drive. i just got my pump turned up so im planing on doing the headers to see how they do with the stacks. so there ant to much to putten them on or did u run into any other probs. one thing i was wondering is do our trucks us a gasket of any sort for the manifolds or headers.
Posting Guru
Joined: Oct 2005
Posts: 1,030
Likes: 0
From: Powell River B.C.
The stock manifold has a steel, dimple type gasket, the headers have a large 1/4" base plate and a thick fiber gasket. Torqued up at install, and re-tighten a couple of times after install, no problems, been on about a year I think!@!
Headers sound -good but are expensive, If I were doing it again I think I would just get the pipes opened up to 3" right at the manifolds. Another member here just bought a set, I hope he did a dyno run before and after so a real value HP wise can be put on the headers.
They do help with acceleration, way better air / exhaust flow- actual rubber on the road horse power comes from burning more fuel. The headers allow you to turn up the fuel as they get rid of the exhaust more efficently.
Headers sound -good but are expensive, If I were doing it again I think I would just get the pipes opened up to 3" right at the manifolds. Another member here just bought a set, I hope he did a dyno run before and after so a real value HP wise can be put on the headers.
They do help with acceleration, way better air / exhaust flow- actual rubber on the road horse power comes from burning more fuel. The headers allow you to turn up the fuel as they get rid of the exhaust more efficently.
Cargo Master
Joined: Nov 2003
Posts: 2,585
Likes: 1
From: Duluth, Mn.
There was a guy over @ TDS that dyno'd Stans headers before/after. He saw something like a 8 HP differance. IIRC it was under 10HP.
Get an AutoJet exhaust. Best bang for your buck.
If you read the online conversation Gale Banks had with IDI owners. He states that no Dyno gains were found goin over 3.5" on NA diesels. And none after 4" with Turbo IDI's.
He even stated that the PSD stopped seeing gains after 4.5" So anything larger is just bling.
Get an AutoJet exhaust. Best bang for your buck.
If you read the online conversation Gale Banks had with IDI owners. He states that no Dyno gains were found goin over 3.5" on NA diesels. And none after 4" with Turbo IDI's.
He even stated that the PSD stopped seeing gains after 4.5" So anything larger is just bling.
Junior User
Joined: Jul 2009
Posts: 67
Likes: 0
I have a 1989 idi and was wonting more horses is headers a good option if so where is the best place to get them,it also sounds like open exaust is very efective for the money the bigger the better?I buoght a 86 ford that has the 460 auto the body is perfect it just came from arizona I want to put my 7.3 idi in it will that work ?and I want to swap the man trans but everybody is saying automatic trans is a little better and it isnt worth the hassle of converting a it any input.?
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Moderator
Joined: Jan 2001
Posts: 56,949
Likes: 2,718
From: Virginia
I have a 1989 idi and was wonting more horses is headers a good option if so where is the best place to get them,it also sounds like open exaust is very efective for the money the bigger the better?I buoght a 86 ford that has the 460 auto the body is perfect it just came from arizona I want to put my 7.3 idi in it will that work ?and I want to swap the man trans but everybody is saying automatic trans is a little better and it isnt worth the hassle of converting a it any input.?
Post Fiend
Joined: Nov 2003
Posts: 21,285
Likes: 15
From: Nutter Fort, WV
As stated above, Stan's Headers is the only game in town for IDI diesel headers.
You will need to do a few mods to the gasser to install a diesel, but it is very doable.
Do you know id the 86 is a heavy duty or light duty chassis?
If not, what rear axle and what is the side badging 250 or 350?
You will need to do a few mods to the gasser to install a diesel, but it is very doable.
Do you know id the 86 is a heavy duty or light duty chassis?
If not, what rear axle and what is the side badging 250 or 350?
Junior User
Joined: Jul 2009
Posts: 67
Likes: 0
It is heavy duty chassis definitly.
thanks for the info about the headers probly not worth it, im glad to know that the trany bell housing is different that is the decider to go with the man trans I like that better any how even with a bit more work.Thanks
thanks for the info about the headers probly not worth it, im glad to know that the trany bell housing is different that is the decider to go with the man trans I like that better any how even with a bit more work.Thanks
Senior User
Joined: Aug 2009
Posts: 375
Likes: 0
From: Phoenix
earlier in this thread it was mentioned that these would not work with a turbo....I know that there would be fab work necessary, and set aside the thermal issues (getting hot exhaust to the turbo), it seems that better exhaust flow is better exhaust flow (and ultimatly that flow will be driving the turbo). Also, if going with the headers, and going to true duals, am I better off running straight back, or putting in an H-pipe.
Forgive my ignorance...I am thinking out loud and am new to the diesel world.
Forgive my ignorance...I am thinking out loud and am new to the diesel world.
Moderator
Joined: Jan 2001
Posts: 56,949
Likes: 2,718
From: Virginia
earlier in this thread it was mentioned that these would not work with a turbo....I know that there would be fab work necessary, and set aside the thermal issues (getting hot exhaust to the turbo), it seems that better exhaust flow is better exhaust flow (and ultimatly that flow will be driving the turbo). Also, if going with the headers, and going to true duals, am I better off running straight back, or putting in an H-pipe.
Forgive my ignorance...I am thinking out loud and am new to the diesel world.
Forgive my ignorance...I am thinking out loud and am new to the diesel world.
Post Fiend
Joined: Nov 2003
Posts: 21,285
Likes: 15
From: Nutter Fort, WV
And let's not forget the extra volume of exhaust the headers would hold, which would have to be brought up to pressure before the turbo could start spooling.
Then you have to pressurize the air supply pipe from the turbo back up to the intake.
Turbo lag would take on a whole new meaning.
Then you have to pressurize the air supply pipe from the turbo back up to the intake.
Turbo lag would take on a whole new meaning.
