Can anyone weigh in on shorty headers for an '01 4.6L Supercrew? Pros and cons, do they really help and who makes good, better, and best? Will headers for a 5.4L work even though the deck height is taller?

Thanks.

 

5.4 headers will fit the motor but you would have to do some work to the rest of the pipes to get them to hook up to them.
You get a lot more power out of long tube headers.
Wont get much if any power out of the shortys.

Phil

 

With long tubes and high flow cats, your looking at 20-30 hp gain. With Shorties your gonna be lucky to get 5... The best long tubes for an '01 are the Dynatechs, a bit on the pricier side though, but you get what you pay for, and the quality is superb!

 

Thanks guys, this confirms what I have been hearing. You probably saved me some money and disappointment.

 

Iv got an old set of 5.4 shortys if you want to give them a try.
But that's why I moved up to long tubes,,,,way more power!

Phil

 

Hi Phil,

You looking to sell them? Next month I'm wanting to change out my manifolds for some shorty headers. I know that long tubes are the way to for the best return, but I'm just looking to step up some what from the inefficient scavenging of the manifold. My proposal on long tubes and cats to the wife failed due to high $$. Let me know what you have. I have 2000 Expy 5.4L.

Thanks,
Rob

 

i have shortys and i wish i would have spent the money for longtube dyntech ther flaking the armor coat off my pacesetters it sucks

 

Hi,
Tried to sent a PM,,,,,no go.
My email is psvitalo@comcast.net

Phil

 

not to thread jack or anything but is it true what Phil6608 said about the 5.4. headers being able to fit on a 4.6? cause about 3 years ago i bought a set of shorties wish i woulda just saved my money,now i want some long tube but everywhere i look they only offer shorties for a 4.6. now the diff is 01whitecrew has an 01 supercrew i have an 02 fx4 would i be able to fit headers made for a 02 5.4 4x4 on my engine?

 

i had shorties and felt a small difference up top. but long tubes are way to go if u want even more top end.

 

No it's not true,,,,I just made it up hahahaha.
The 4.6 and 5.4 use exactly the same heads! So headers will fit both motors.But where you might run into problems is will the header fit in your truck.They could hit the frame or anything else that may be in the way.

Phil