Hacked up 460
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Hacked up 460
the 460 was introduced in 74'.any engine can increase performance buy adding a small tube set of headers.every engine is just a air pump.the fuel just forces the cylinders down.and with saying that the engine needs to get rid of the spent gases quickly.the headers let each cylinder disperse there exhaust evenly to the collector.think about it,there has to be a reason to have 'em other than being a pain in the *ss!!....blue=
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From: Cullman Alabama
Hacked up 460
Oh how I hate to be argumentative, especially with an experienced engine guy, but I reiterate, "nowhere is it documented that Headers (as we know them) will increase the performance of a STOCK engine" and Headers do not have the life expectancy of the stock exhaust manifolds. The exhaust breathing of the stockers is plenty adequet. If you increase the breathing of one of those stockers you just move more fuel through in an un-burned state. There must be some back pressure or it's just inefficient. I sure wish there were some S.A.E.'s on this forum. DIsmond Peacher, where are you?
I do say that with some Cam and Carburator or F.I. improvments, a set of tuned exhaust ports leading to a "Collector" which also has a specific function, will make one hell of a difference through a given RPM range.
One place in our stock world, there is a real use for headers. It's to replace the cracked exhaust manifold on a 240/300 I-Six. The replacment from Ford is nearly or just over $400, and headers for the Six are less that $300 in some places I'm told.
I do say that with some Cam and Carburator or F.I. improvments, a set of tuned exhaust ports leading to a "Collector" which also has a specific function, will make one hell of a difference through a given RPM range.
One place in our stock world, there is a real use for headers. It's to replace the cracked exhaust manifold on a 240/300 I-Six. The replacment from Ford is nearly or just over $400, and headers for the Six are less that $300 in some places I'm told.
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Hacked up 460
what good is a s.a.e gonna do?alcoholic stressed out grease monkeys know no more on the subject than ma' self.i know your question was refering to stock engines and there passage of exhaust is no less powerful than a slightly built motor that countless people and magazines say headers are one of the first upgrades to be made.they are lighter and disperse heat well. and back pressure and exhaust turbulance are two different things ya' know?it is a proven fact(really!)that the ports and initial and final travel of the exhaust are no less important that the mixture leading into the cylinder.but heck i'm just a hillbilly.
as for the sae comment.,
save your breath,i have three friends who are certified in most of the fields.and they have a h*ll of a life.keep everbody elses heaps runnin' and your to burned out to fix your own!that's why i chose not to work in the auto buis.that way i could enjoy builin' my old fords......blue
as for the sae comment.,
save your breath,i have three friends who are certified in most of the fields.and they have a h*ll of a life.keep everbody elses heaps runnin' and your to burned out to fix your own!that's why i chose not to work in the auto buis.that way i could enjoy builin' my old fords......blue
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Hacked up 460
I've got half a dozen magazines downstairs in which a variety of engines were dyno tested after installation of a set of good headers. Without exception, substantial amounts of horsepower and torque were gained.
Both the 390 and the 460 (which is in the same 385 series engine family as the 429) were manufactured in several configurations. And, again, both were great engines. But Ford Motor Company itself never claimed equal power (horsepower or torque). An early stock (pre-smog) 460 made more power than any stock 390 Ford ever did. And, if you are willing to pay for the fuel, the 460 can be modified to pull a little bigger stumps out of the ground than a modified 390, all mods being more or less equal.
Barnes and Noble stocks about 20 books that touch extensively on these two great engines. Don't take my word -- read all about it. It appears that the man who posted on the wisdom of viewing an engine as and air pump has done a lot of reading and/or working on engines.
Oh, and may a lovely co-ed in a short skirt sit in the chair across the coffee table to make your reading even more enjoyable.
Both the 390 and the 460 (which is in the same 385 series engine family as the 429) were manufactured in several configurations. And, again, both were great engines. But Ford Motor Company itself never claimed equal power (horsepower or torque). An early stock (pre-smog) 460 made more power than any stock 390 Ford ever did. And, if you are willing to pay for the fuel, the 460 can be modified to pull a little bigger stumps out of the ground than a modified 390, all mods being more or less equal.
Barnes and Noble stocks about 20 books that touch extensively on these two great engines. Don't take my word -- read all about it. It appears that the man who posted on the wisdom of viewing an engine as and air pump has done a lot of reading and/or working on engines.
Oh, and may a lovely co-ed in a short skirt sit in the chair across the coffee table to make your reading even more enjoyable.
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From: Cullman Alabama
Hacked up 460
>I've got half a dozen magazines
>downstairs in which a variety
>of engines were dyno tested
>after installation of a set
>of good headers. Without
>exception, substantial amounts of horsepower
>and torque were gained.
Well, thank's for the Eye opener, CraigH. You can probably guess that I'd like to see the details. I would just have to see for myself where the Horsepower gain occurred, and how much it was. Sometimes those old articles can be pulled up from the Magazines archives. Let's give it a try, or maybe you have a scanner and can send it to me direct.
I'm open here. If I cant get the milage, I'll take the Horsepower. I am worried about the up-coming emissions testing though.
Yup, in engineering terms, we got Hot air machines. There are some very knowlegable contributers on this forum.
>downstairs in which a variety
>of engines were dyno tested
>after installation of a set
>of good headers. Without
>exception, substantial amounts of horsepower
>and torque were gained.
Well, thank's for the Eye opener, CraigH. You can probably guess that I'd like to see the details. I would just have to see for myself where the Horsepower gain occurred, and how much it was. Sometimes those old articles can be pulled up from the Magazines archives. Let's give it a try, or maybe you have a scanner and can send it to me direct.
I'm open here. If I cant get the milage, I'll take the Horsepower. I am worried about the up-coming emissions testing though.
Yup, in engineering terms, we got Hot air machines. There are some very knowlegable contributers on this forum.
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