question on headers

Reply Subscribe

Thread Tools

Search this Thread

Dec 17, 2006 | 12:08 AM

f150krsc03

Thread Starter

Member

Joined: Dec 2006

Posts: 78

Likes: 0

question on headers

Does anybody know if they make long tubes for my 03 f150 King Ranch SC 4x4. It has a 5.4 V8 in it.

Dec 17, 2006 | 12:13 AM

built54

Senior Member

Joined: Jul 2006

Posts: 6,282

Likes: 1

From: Farmington, MO

Try a search, this is discussed every day. But go with Dynatech Long tubes, they are stainless steel, I have them, and i gained 30hp and 35ftlbs torque.

Dec 17, 2006 | 12:35 AM

f150krsc03

Thread Starter

Member

Joined: Dec 2006

Posts: 78

Likes: 0

I see that you have they same engine as me, so where did you get yours? and bout how much are they?

Dec 17, 2006 | 12:39 AM

built54

Senior Member

Joined: Jul 2006

Posts: 6,282

Likes: 1

From: Farmington, MO

I got mine from www.rpmoutlet.com I think they were around $850

Dec 17, 2006 | 04:38 PM

f150krsc03

Thread Starter

Member

Joined: Dec 2006

Posts: 78

Likes: 0

Hey built 54

i see you have a high flow cat, does that make any difference in the sound of your nice truck?

Dec 17, 2006 | 04:44 PM

built54

Senior Member

Joined: Jul 2006

Posts: 6,282

Likes: 1

From: Farmington, MO

I have 1 high flow on each side, made it sound mean!

Dec 17, 2006 | 04:49 PM

f150krsc03

Thread Starter

Member

Joined: Dec 2006

Posts: 78

Likes: 0

did you get yours from www.rpmoutlet.com cause i saw some that look like they would be good.

Trending Topics

https://www.cbsnews.com/news/ford-recall-f-150-pickup-trucks-gearshift-issu...

1

55
99 4.6 2wd P0174 & P0171

3

92
Make Grandpa Trucks Great Again! (56k warning)

15

876
Blower motor hum on 4th speed.

4

978

Dec 17, 2006 | 05:01 PM

built54

Senior Member

Joined: Jul 2006

Posts: 6,282

Likes: 1

From: Farmington, MO

yep

Dec 17, 2006 | 05:20 PM

f150krsc03

Thread Starter

Member

Joined: Dec 2006

Posts: 78

Likes: 0

how many cats come on a stock truck cause the only thing i have done is put duals on and cut the muffler off.

Dec 17, 2006 | 05:21 PM

#10

built54

Senior Member

Joined: Jul 2006

Posts: 6,282

Likes: 1

From: Farmington, MO

2 on each side

Dec 17, 2006 | 05:25 PM

#11

f150krsc03

Thread Starter

Member

Joined: Dec 2006

Posts: 78

Likes: 0

So do i need to replace all of them w/ high flow ones, or cutting two off would be the thing to do, thats not illegal is it? alos wat bout that throttle body wat kind of performance did you get out of it?

Last edited by f150krsc03; Dec 17, 2006 at 05:35 PM.

Dec 17, 2006 | 05:38 PM

#12

built54

Senior Member

Joined: Jul 2006

Posts: 6,282

Likes: 1

From: Farmington, MO

Its not illegal. Just cut all 4 off and replace with 2. The throttle body gave me more responce, about 8hp, but im sure with all the mods I have now, that the stock throttle body would be restrictive.

Dec 20, 2006 | 08:20 AM

#13

f150krsc03

Thread Starter

Member

Joined: Dec 2006

Posts: 78

Likes: 0

it said it wouldnt fit a 4x4

Dec 20, 2006 | 10:56 AM

#14

JMC

Technical Article Contributor

Joined: Dec 1997

Posts: 9,417

Likes: 11

From: Windsor,Ontario,Canada

built54,

Did you have to change anything for them to fit? I believe that if you buy just the headers there is an O2 bung in the collector. Is that so?

JMC