03, F250 5.4, Power

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dfitz16
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03, F250 5.4, Power

Post by dfitz16 » Mon Oct 09, 2017 1:03 pm

Gents,
I have a 03, F250 4x4 Super Duty extended cab with 8' bed, with 3.73 gearing. 150,000 on the clock. I have owned the truck since 05, I have always thought it should have more power, it just feels sluggish. It is all bone stock, I have done nothing except routine maintenance. Now I may start playing with trying to improve the power. What would be the best things to try on this?

GerryP
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Re: 03, F250 5.4, Power

Post by GerryP » Mon Oct 09, 2017 4:38 pm

A diesel swap.

englertracing
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Re: 03, F250 5.4, Power

Post by englertracing » Mon Oct 09, 2017 4:46 pm

no personal experience, but my friend was telling me his v10 dealyo had a horrible intake snorkel that he thinks was choking it up. I remember looking under my moms excursion and seeing the y pipe was a hideous little piece.

learner1
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Re: 03, F250 5.4, Power

Post by learner1 » Mon Oct 09, 2017 4:47 pm

If yours has the crappy shaped y-pipe you might try installing one from these guys:



http://www.spdperformance.com/index.php ... 1ohqmiflt1

bobalattie
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Re: 03, F250 5.4, Power

Post by bobalattie » Mon Oct 09, 2017 5:37 pm

New timing chains and guides and a better pair of camshafts. They can really use some help in the compression ratio departmentas well.

As mentioned before, have a look at the exhaust y pipe and see if it has the restricted one on it or not.. I can't remember what years had them for certain.

Keith Morganstein
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Re: 03, F250 5.4, Power

Post by Keith Morganstein » Mon Oct 09, 2017 9:37 pm

Vortec or other supercharger kit. Ford mods are good with a power adder

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