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Thread: What's the real differance in a 03 to 07- 4.8 and 5.3?

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  1. #1
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    Thumbs up What's the real differance in a 03 to 07- 4.8 and 5.3?

    So some of you might know that i am looking into getting a truck soon and have came across some 03' to 07' trucks that are the ideal year i want. (short bed reg cab).

    The one thing that keeps coming to mind is liter size. For myself i am a HUGE mustang guy and know that a 5.0 isn't any real power difference than a 4.8. With keeping that in mind I'm not an "enthusiast" about chevy trucks...yet but I'm learning and getting there.


    My real question is should i really be concerned with this and would anyone know the power rating of both? I have research a little and found out (not from a reputable source), but that the 2000 and 2003 5.3L had better overall HP and Torque while the 04 had better torque alone.

    And is it the L59 or LR4



    Not using the truck for more than a daily driver and fun country truck. Might do some light pulling ( trailer and drag car )
    Last edited by Long Dong Willy; 05-19-2012 at 08:18 PM.

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    Registered User Chriscon7's Avatar
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    Re: What's the real differance in a 03 to 07- 4.8 and 5.3?

    I think the early 4.8's had around 265 hp and the later ones had around 285 hp
    06-2wd-4.8-5speed-LR4-Z85-40series-Baja 8s-TrueTrac-4.30gears-J&S Performance Tune
    Quote Originally Posted by kyviabama View Post
    Every guy thinks he has an additional 2".


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    Re: What's the real differance in a 03 to 07- 4.8 and 5.3?

    Quote Originally Posted by Chriscon7 View Post
    I think the early 4.8's had around 265 hp and the later ones had around 285 hp
    Lol only going to answer a piece of my question? Haha joking

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    Registered User Chriscon7's Avatar
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    Re: What's the real differance in a 03 to 07- 4.8 and 5.3?

    Quote Originally Posted by Long Dong Willy View Post
    Lol only going to answer a piece of my question? Haha joking
    Sorry, I was going to do some searching for ya but im on my phone and too lazy to get on the computer right now
    06-2wd-4.8-5speed-LR4-Z85-40series-Baja 8s-TrueTrac-4.30gears-J&S Performance Tune
    Quote Originally Posted by kyviabama View Post
    Every guy thinks he has an additional 2".


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    Re: What's the real differance in a 03 to 07- 4.8 and 5.3?

    Quote Originally Posted by Chriscon7 View Post
    Sorry, I was going to do some searching for ya but im on my phone and too lazy to get on the computer right now
    Ah I'm just giving you crap. I can tell this site doesn't have a lot of daily users. Unless you have to app of course.

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    Re: What's the real differance in a 03 to 07- 4.8 and 5.3?

    Quote Originally Posted by Chriscon7 View Post
    Sorry, I was going to do some searching for ya but im on my phone and too lazy to get on the computer right now
    Ah I'm just giving you crap. I can tell this site doesn't have a lot of daily users. Unless you have to app of course.

  7. #7
    Registered User Chevy53's Avatar
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    Search wiki your answer lies there


    -Ziggy-
    2002 silverado 1500 extended cab short bed 5.3L

    current mods -

    Aftermarket speakers and aftermarket headunit
    Cree reverse light bulbs
    Custom flowmaster original 40 series exhaust
    Candied tails
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    Future
    Converted cluster bulbs to leds - only turn signals to go

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    Re: What's the real differance in a 03 to 07- 4.8 and 5.3?

    Would it be worth me not getting a truck I really like just because it has a 4.8?

    And what kinda bolt on power adders would you guys recommend? Throttle body, cold air intake, full exhaust.ext

  9. #9
    NO ROOF RACK NEEDED kemble's Avatar
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    Re: What's the real differance in a 03 to 07- 4.8 and 5.3?

    I wouldnt shy away from a 4.8 in a RCSB.

    longtubes, tune, camshaft, and a converter would be the mods I would be researching.
    SOLD: 04 z71, 3200 circle D, longtubes, Corsa sport, TBG 4l60e, 93 BB tune, 4500K HIDS, and other aftermarket stuff.

    Quote Originally Posted by 03SMURF View Post
    you have the meanest sounding 5.3 I have ever heard in person

  10. #10
    DetroitImagery.com Joe's Avatar
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    4.8l is a great motor. Unless you tow a bit it is just fine

    Quote Originally Posted by Long Dong Willy View Post
    Ah I'm just giving you crap. I can tell this site doesn't have a lot of daily users. Unless you have to app of course.
    Not a lot of users? :lol:

    Sent from a DROID X while driving

  11. #11
    Astute as fek. DarkCharisma's Avatar
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    Re: What's the real differance in a 03 to 07- 4.8 and 5.3?

    :lol: This board is far from lacking regular users. It's like 09:45 on a Sunday, not many people are doing much aside from sleeping, barbecueing, churching, whatever it is people do on Sunday.

    Anyway, the 4.8L was about 260-285HP, with tq at 280-300ft-lbs, iirc. The 5.3L ranges from 285 to 315, and tq from 315 to 345ft-lbs--again, from memory. Those may not be EXACT, but they are very close. I would get the 5.3L over the 4.8L. As with anything derived from the LS series, it is power-packed for it's size; add a cam, stall, gears, tune, long-tubes and a proper exhaust and you'll have a quick truck.


    '04 CTS-V | '01 2500HD 4x4 6.0/80e

    Quote Originally Posted by randeez View Post
    he's got real problems, you think choosing which leather to rewrap in interior is easy? :read:

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