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Best year of a 5.3?

This is a discussion on Best year of a 5.3? within the Technical / Maintenance forums, part of the General Discussion category; So it looks like the 06's have 295hp, is this cause of a cam change from the year before? Whats ...

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    Best year of a 5.3?


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    So it looks like the 06's have 295hp, is this cause of a cam change from the year before? Whats the BEST year for the 5.3?
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    JB
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    Re: Best year of a 5.3?

    05's have the same HP, could be due to e-fans not loading down the motor but Im not sure how GM calculates their HP
    Last edited by JB; 05-24-2006 at 12:05 PM.
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    The Bad Guy Gran Patron's Avatar
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    Re: Best year of a 5.3?

    All GENIII ,LSXX design, truck v8's are all pretty good. Of course they all have their issues but nothing major. The 99's was the first year and were less under rated @270HP/315TQ then in 00' to 03 they were @ 285HP/325TQ. The 03+ recieved upgraded computers and different settings than the 99-02's. 04+ got 295HP/335TQ in addition to the 05+'s getting efans. All the numbers listed are for the 5.3L's.

    All internals are the same no matter what year and PCM constrols are different tunes and that's how GM controls the power differences. Cams remain identical.

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    Re: Best year of a 5.3?

    i had a 00 silverado with one in it and boy was it fast lol sucked it wreaked it but anywayz my 05 Z has the 5.3 and i notice its a tad bit faster runnin even thought its a 4 door. i aint much on the numbers but i love the newer 5.3
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    Re: Best year of a 5.3?

    Get an '03+. '02 & earlier might have piston slap.
    When all is said and done, usually more is said.
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    Re: Best year of a 5.3?

    Quote Originally Posted by Bullwinkle
    Get an '03+. '02 & earlier might have piston slap.
    The 03+ still have a piston slap but less prevalent. GM has only quited down in the past years. The 99-02's are very noticeable. There's is no fix to this it's considered normal.

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    Re: Best year of a 5.3?

    Quote Originally Posted by Gran Patron
    99-02's. 04+ got 295HP/335TQ in addition to the 05+'s getting efans. All the numbers listed are for the 5.3L's.
    Actually, 04's are 295/330, 05 & 06 are 295/335

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    Re: Best year of a 5.3?

    Isnt the '06 L33 310hp/335tq???

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    Re: Best year of a 5.3?

    Quote Originally Posted by Drumaniac3000
    Isnt the '06 L33 310hp/335tq???

    Jason
    Yes, L33 in '05 and '06 is 310/335

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    Re: Best year of a 5.3?

    whats an L33?
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    Re: Best year of a 5.3?

    Quote Originally Posted by RedTSP4x4
    whats an L33?
    The 5.3 H.O. aluminum block.

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    Re: Best year of a 5.3?

    Quote Originally Posted by Nick
    The 5.3 H.O. aluminum block.
    Can i get an 06' RCSB with one?

    Which is better the iron block or the aluminum one? The cam will be changed and i plan on a 6.2 in the future anyway.
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    Re: Best year of a 5.3?

    05 H.O. 310hp

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    Re: Best year of a 5.3?

    Quote Originally Posted by RedTSP4x4
    Can i get an 06' RCSB with one?

    Which is better the iron block or the aluminum one? The cam will be changed and i plan on a 6.2 in the future anyway.
    No, Z71 ext cabs only. (maybe crews, not sure)

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    Re: Best year of a 5.3?

    Quote Originally Posted by Nick
    No, Z71 ext cabs only. (maybe crews, not sure)
    yep

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    Re: Best year of a 5.3?

    Quote Originally Posted by RedTSP4x4
    Can i get an 06' RCSB with one?

    Which is better the iron block or the aluminum one? The cam will be changed and i plan on a 6.2 in the future anyway.
    I know that my mom's new Yukon has one. It has some power, haven't towed the trailer with it yet though. We'll see how it does this summer.

    Jason
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    Re: Best year of a 5.3?

    I have the 5.3 on an '05 Ext Cab 4x4, and it hauls. My friend who has a '65 C10 with a 327 fully built Corvette motor in it compliments on how "It has way more power than he thought." I've beat '98 5.7's, '00 5.3's, 4.7 Dakotas, Hemis, Cummins, and a few imports in my day, with just a K&N and a Flowmaster.

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    Re: Best year of a 5.3?

    Quote Originally Posted by JB
    05's have the same HP, could be due to e-fans not loading down the motor but Im not sure how GM calculates their HP
    Do all '05+ Truck GenIII V8s have e-fans? What about the LQ4 in a 2500HD.
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    Re: Best year of a 5.3?

    Quote Originally Posted by JB
    05's have the same HP, could be due to e-fans not loading down the motor but Im not sure how GM calculates their HP
    The GM sales department has the final say on horsepower figures! They come up with whatever they figure will sell.
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    Re: Best year of a 5.3?

    Quote Originally Posted by DRCZ71
    Do all '05+ Truck GenIII V8s have e-fans? What about the LQ4 in a 2500HD.
    heres one on ebay and by looking at the engine it appears to have a fan shroud so I would say no.

    However by looking at this deanli with the 6.0 on ebay it doesnt have the shroud so it appears to have the factory e-fans so go figure

    (click on the word ebay for link)
    Last edited by JB; 05-25-2006 at 07:10 AM.
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