i have an 04 supercrew with a 4.6 and the thing is a complete dog.. its really pretty hard to even get on the highway unless i have a long onramp to build up some sort of speed... i'm just curious, is the motor REALLY this gutless for this big of a truck? it has flowmasters on it but is there another brand of muffler that these ford motors take too better? what about an intake or some type of tune? i need to wake this thing up a little bit, its horrible to drive..

any help is appreciated

 

I got a 4.6 supercab that isn't to bad on me, but it is stock from head to toe.

 

Without comming across as a smart ***, I have to wonder why someone buys a truck that weighs as much as a Screw with the 4.6...either way I think the true answer is most likely that the motor in all reality is underpowered for such a large and heavy truck. The flowmasters are also killing your low end torque.

 

This body style is heavy, any cab.

Of course, the supercrew is going to be the heaviest. Coupled with the often labeled underpowered 4.6l, and you've got the pretty slow truck.

I've got the 4.6l in my supercab and stock is was pretty slow. With the addition of CAI, exhaust, and custom tunes it is now starting to feel more like a 5.4l. With the additional cost of aftermarket parts, it probably would have been more cost-efficient to go with the 5.4l in the first place.

I love my 4.6l though. I considered my STX like a barebones setup made for modding. Everything thats done to it was done by my hand. It may be a little underpowered, but its reliable as hell, and with some mods will perform better.

 

dont worry even the 5.4 is a dog. atleast the 4.6 doesnt shift out at 4900rpm.

 

Any time you wish to strap a 7,000Lb trailer to your 4.6, I'll do the same to my 5.4 Dog, & we will see which DOG, makes it to the finish line, & which one is still sittin in the Dog House!.................

 

Swap the Flowmasters for Magnaflows is a start. The Supercrew and a 4.6: I wouldn't ever really personally want to own, it would need some power to haul the body. Well atleast its not a Dodge quad cab that has the V6 available.

 

Unless those pipes are the diameter of Honda fart cans, they're not.

Regear or just stay out of OD.

4.6s like revs, and a SuperCrew with 3.55s or 3.73s is not cutting it.

 

if you want the 4.6 to get out of its own way you have to let the gerbil's wind up the rubber bands faster.

 

I have a 5.4 in a short box-regular cab configuration, and it is hardly a rocket, so I can't imagine what a 4.6 in a supercrew must feel like.

I'll be real interested to see what kind of change I notice in the get-up-and-go of this truck once I add a CAI and tune to my Magnaflow.

 

deal!

 

comparison
4.6L supercrew 2005 with a super 55 flowmaster on it. from a stop 20-85 11 seconds
http://www.youtube.com/watch?v=KAnJf...eature=related

5.4L 2006 super crew with intake and exhaust from a rolling start 20-85mph is 12.5 seconds
http://www.youtube.com/watch?v=3DYCr...eature=related

 

http://www.youtube.com/watch?v=8nb2Ha1ZTWo

2005 5.4 3v VS 2003 4.6 2v 50 punch, basically mod for mod

 

I dont care what yall say 5.4 is the one to have. I think I can take 4.6.

 

....I remember when I used to stand up for my modded 4six-before I had the 5four.


Now I just look back and laugh at myself.