need advice!
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Senior User
Joined: Nov 2004
Posts: 173
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From: town near el paso tx.
need advice!
Finally I'm ready to make some mods. to my 99 f 250 5.4 superdutty.I need advice from all you experts.
First I'll regear from 3.73 to 4.30. Also need to know what to do to pull the max possible torque with out affecting hp. I'm planing to swamp headers, wish brand and tipe will be the best. By the moment I need to stay with the stock exaust muffler, but later I'll change it.What do you recomend a chip or a computer programer. I do lots of daily towing and need more power.Basicly these are the 3 things I think should do to improve power, but if somebody knows something better (let me know).
Thanks.
First I'll regear from 3.73 to 4.30. Also need to know what to do to pull the max possible torque with out affecting hp. I'm planing to swamp headers, wish brand and tipe will be the best. By the moment I need to stay with the stock exaust muffler, but later I'll change it.What do you recomend a chip or a computer programer. I do lots of daily towing and need more power.Basicly these are the 3 things I think should do to improve power, but if somebody knows something better (let me know).
Thanks.
Lead Driver
Joined: Jun 2006
Posts: 5,676
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From: Near Yosemite CA
Not having a 5.4 I can't say from experience with that set-up in particular, however, if you re-gear to 4.30 you will LOVE that, next would be the exhaust so it will let it breathe, then programmer and intake, in that order, they all kinda go with each other.... more gas+more air= more power, but if it is restricted (exhaust is stock) your complete gains are not realized, so once your ready to do one, make sure you are ready to do them all.
Thread Starter
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Senior User
Joined: Nov 2004
Posts: 173
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From: town near el paso tx.
Originally Posted by Pickupmanx2
Not having a 5.4 I can't say from experience with that set-up in particular, however, if you re-gear to 4.30 you will LOVE that, next would be the exhaust so it will let it breathe, then programmer and intake, in that order, they all kinda go with each other.... more gas+more air= more power, but if it is restricted (exhaust is stock) your complete gains are not realized, so once your ready to do one, make sure you are ready to do them all.
Senior User
Joined: May 2007
Posts: 356
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From: Dinwiddie, Virginia
Man you can ask a big question can't you. What you want to do depends on what you want. You said daily towing, just how much weight? Any off roading how often does a open diff let you down? Are you after gas milage or just the power to spare? Budget is what $1000 or $10000? Planning on getting bigger tires? You may need engine mods only, gear change only or both. I will watch for your answers because I have tried it all on my 2001 5.4L.
