fuel injection 460 build
Junior User
Joined: Mar 2008
Posts: 94
Likes: 0
From: Redbird, OK
i gotta slide a quik question in here...i intend a similar build with my currently locked up 460, and as i always do i plan on ridding myself of the useless emisions crap..no test here...however this engine has a egr valve sensor...i had a bad one on a tempo i had and i caused a 4cyl to get about 9mpg and my exhaust was 90% unburt fuel cuz it confused the computer so bad...sooo what is gonna happen it i toss my egr and emmisons? the same thing? if so what all can i safely trash?
Junior User
Joined: Mar 2008
Posts: 94
Likes: 0
From: Redbird, OK
ok that is probably what i will do, i had assumed that the egr would not function properly and cause the same problems if you remove the cat...but if you removed yours i guess it is fine...have you had any probs with your setup?
Elder User
Joined: Feb 2008
Posts: 999
Likes: 1
From: Davison, Mi.
We speak english here.
Use full sentences please.
Posting Guru
Joined: Dec 2006
Posts: 1,118
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sorry i was runnin away while i was writin 1st day one the forums in a while (school and bike) but i was tryin to ask how the seat of the pants dyno felt when you swapped cams using one thats mild enough to use with stock speed density set up. not to thread jack but im thinkin bout putting heads and a cam with the stock speed density and headers and single 3" exhaust
Cross-Country
Joined: Nov 2003
Posts: 69
Likes: 0
From: KALISPELL MONTANA
Cam Swap
I noticed a big improvement but the cam was installed along with the head work and the Thorley headers so its hard to tell how much was just the cam.
I had the fuel injection kit and the 3" cat back exhaust with the cat gutted already installed so its hard to tell. I have had zero problems with the speed density truck runs real good and I,m getting 14 to 15 mpg on the highway unloaded and behaving myself of course.
Richard
I had the fuel injection kit and the 3" cat back exhaust with the cat gutted already installed so its hard to tell. I have had zero problems with the speed density truck runs real good and I,m getting 14 to 15 mpg on the highway unloaded and behaving myself of course.
Richard
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Freshman User
Joined: Mar 2008
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i own a 97 f250 460 5spd that i just installed headers on last weekend. i ended up breaking the elbow off in the drivers side manifold because it was rusted badly as well as the egr tube itself was rusted at both ends, not letting me break it loose from the egr valve. therefor, i completely removed the egr setup and installed a blockoff plate cut from 1/4" steel. i alsor gutted the cat, removed the smog pump and air injection, including all hoses and charcoal canisters. it throws a check engine light, but idles nice, runs smooth, and ive noticed an increase in mileage. i spoke with a tech at ford and he says for that truck, removing the egr will not hurt anything, wont run extra rich or lean, itll just throw a light because the egr is unhooked. also had the muffler shop make a new 2.5" ypipe, as opposed to the factory 2 1/8" one. i am very pleased with the outcome, oh and i used l&l headers and love 'em.
Senior User
Joined: Mar 2008
Posts: 318
Likes: 1
My machinist is going to mill about .020", do a 3 angle valve job, install new springs and do some mild porting. He said that by doing some quick blending in the intake ports and cleaning up the exhaust ports that I'll see 20-30 HP over stock. Looks like a total of about $500 for head work.
Cross-Country
Joined: Nov 2003
Posts: 69
Likes: 0
From: KALISPELL MONTANA
Head work
I did a 3 angle valve job a mild port job and installed 2.08 intake valves. the 87 to 92 E7TE heads came from Ford with 1.98 intake valves. the earlier heads and the latter F3TE heads all came with 2.08 from the factory.
Richard
Richard
More Turbo
Joined: Sep 2003
Posts: 630
Likes: 4
From: Northeast
Can Speed Density Compensate for Headers or Not?
Hey All,
I'm not tryin' to hijack the OP's thread, either, but I have a related question:
I have a 1997 F-250 HD 460 5-spd, SCLB, 4x4, and I wanted to know if the speed density system will or will not adapt to a set of long tube headers?
I probably only have the budget for headers, but not cam or other mods, and I want to reinstall the 02 (somewhere?) to maintain full emissions system functionality. I would guess that I would have to get a 3" exhaust (duals, if possible) but I wanted to know if the speed density ECM can compensate for the headers or not?
Also, where does the O2 sensor get reinstalled?
Lastly, I've read that ONLY Banks offers a set of long-tube headers for the 460 with the ZF 5-speed--is that true?
Thanks.
I'm not tryin' to hijack the OP's thread, either, but I have a related question:
I have a 1997 F-250 HD 460 5-spd, SCLB, 4x4, and I wanted to know if the speed density system will or will not adapt to a set of long tube headers?
I probably only have the budget for headers, but not cam or other mods, and I want to reinstall the 02 (somewhere?) to maintain full emissions system functionality. I would guess that I would have to get a 3" exhaust (duals, if possible) but I wanted to know if the speed density ECM can compensate for the headers or not?
Also, where does the O2 sensor get reinstalled?
Lastly, I've read that ONLY Banks offers a set of long-tube headers for the 460 with the ZF 5-speed--is that true?
Thanks.
Senior User
Joined: Mar 2008
Posts: 318
Likes: 1
Hey All,
I'm not tryin' to hijack the OP's thread, either, but I have a related question:
I have a 1997 F-250 HD 460 5-spd, SCLB, 4x4, and I wanted to know if the speed density system will or will not adapt to a set of long tube headers?
I probably only have the budget for headers, but not cam or other mods, and I want to reinstall the 02 (somewhere?) to maintain full emissions system functionality. I would guess that I would have to get a 3" exhaust (duals, if possible) but I wanted to know if the speed density ECM can compensate for the headers or not?
Also, where does the O2 sensor get reinstalled?
Lastly, I've read that ONLY Banks offers a set of long-tube headers for the 460 with the ZF 5-speed--is that true?
Thanks.
I'm not tryin' to hijack the OP's thread, either, but I have a related question:
I have a 1997 F-250 HD 460 5-spd, SCLB, 4x4, and I wanted to know if the speed density system will or will not adapt to a set of long tube headers?
I probably only have the budget for headers, but not cam or other mods, and I want to reinstall the 02 (somewhere?) to maintain full emissions system functionality. I would guess that I would have to get a 3" exhaust (duals, if possible) but I wanted to know if the speed density ECM can compensate for the headers or not?
Also, where does the O2 sensor get reinstalled?
Lastly, I've read that ONLY Banks offers a set of long-tube headers for the 460 with the ZF 5-speed--is that true?
Thanks.