Intake or exhaust manifold?

[Redneck6.0L]

i'd personally do the modded intake manifold before exhaust manifolds, 4 yrs ago i used to burn up the back cylinders, since i put my modded intake on the burn pattern in all the cylinders are the same now, and what i mean by burn pattern is the fuel spray flower looking thing on top of the pistons, stock manifold was dropping 6-8 psi from the front of the manifold to the back of it when i did my testing, hope this helps, after that steed speed manifolds are a close second

 

[Powerstroked162]

Ya I hear ya, I'd like to know with a egr model how much would these different manifolds actually flow.

I can't say exactly how much difference there is but I can assure you there is a difference. The EGR system is a Gawd awful mess of pockets and passageways that can't help airflow. We are currently trying to figure out a way to bypass the system but offer up visual compliance. I will hopefully have an answer by Monday. In the mean time, Elites manifold is going to be your only choice for something ported that retains the factory emissions system.

 

[ODAWG714]

Excellent, thank you guys.

 

[strokin6L]

i'd personally do the modded intake manifold before exhaust manifolds, 4 yrs ago i used to burn up the back cylinders, since i put my modded intake on the burn pattern in all the cylinders are the same now, and what i mean by burn pattern is the fuel spray flower looking thing on top of the pistons, stock manifold was dropping 6-8 psi from the front of the manifold to the back of it when i did my testing, hope this helps, after that steed speed manifolds are a close second

Thanks for the info shawn....this was very helpful. As i was thinkin about doing exhaust manifolds next year...now i will more than likely do the intake manifold first. Wish i didn't have the stupid toilet seat style manifold that the '03-early '04s have.

 

[Powerstroked162]

I can fix that

 

[strokin6L]

definitly keeping you in mind with that Steve. As i have a spare '03 engine that i can yank the manifold off of and send it to ya so i have no down time on my truck other than the time it'll take to pull the stock one off and install the ported one.

 

[Extended Power]

Now if Steed Speed could make an intake manifold like his exhaust manifolds...wouldn't that just kick sum a$$...

 

[Extended Power]

I would have liked to score a set of Steed Speed manifolds for when I swap out my secondary turbo, and go with different up pipes.

 

[kyle43335]

Thanks for the info shawn....this was very helpful. As i was thinkin about doing exhaust manifolds next year...now i will more than likely do the intake manifold first. Wish i didn't have the stupid toilet seat style manifold that the '03-early '04s have.

Cut the cross over out,cap the holes and weld them up.

 

[ODAWG714]

Now if Steed Speed could make an intake manifold like his exhaust manifolds...wouldn't that just kick sum a$$...

That would be sick

 

[strokin6L]

Cut the cross over out,cap the holes and weld them up.

well i would if i could, but i dont have a welder to weld aluminum nor have i ever welded aluminum. That's why i'll send it to Steve to do.

 

[ODAWG714]

Fak I got intake and exhaust manifolds and up pipes on order we will see how well this stuff flows.

 

[strokin6L]

who's did you end up going with?

 

[ODAWG714]

Intake=Soot from Patrick@kem
Manifolds=steed speed
Up pipes=jd@elite diesel

 

[ODAWG714]

When I do the install I'm gonna do it all at once I got a lot of driving to do in August

 

[strokin6L]

cool. would love to see some pics of the install process when you put them on. Do you plan on installing the exhaust manifolds without removing the cab?

 

[ODAWG714]

Will do bud. Ya I'm gonna pull the fender liner out on the passenger side and remove the dp and everything on top of the motor. I think there is enough room if not then I'll lift the cab with my 4ft jack stands. I got all the gaskets n welder is ready to weld up my egr cooler so hopefully soon I'll be digging into this whore of a truck lol

 

[strokin6L]

i wanna do exhaust manifolds next with the intake manifold and was gonna pull the inner wheel wells to install

 

[ODAWG714]

If the exhaust manifolds come first then ya I'll call in sick to work and install them instantly lol and yes wheel liner/fender wells out. I just re torqued my factory ones it seems like the driver side has more than enough room but the passenger side is jam packed

 

[1fastTRX]

Damn even call off of work to get it done? Hell yea! I'll have to swing by between calls to see how it's going being i pass through OC all day long. If it's the weekend then I'll swing by and pass you tools! I want to see what the intake manifold looks like when you get it. You hoping mainly for power increases or mpg? what kind of mpg are you getting right now?