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Thread: 5.3 to 6.0 longblock hp tq difference?

  1. #1
    Join Date
    Mar 2009
    Location
    Lubbock,Tx.
    Posts
    23

    5.3 to 6.0 longblock hp tq difference?

    So what i am doing is taking out my 5.3 and installing a 6.0 longblock with the all my 5.3 stuff. My question is will i have more hp and tq with a 6.0 longblock rather than the 5.3 Lb?? O yeah its i think an 02 or 03 6.0 with 317 heads i got goin in a 2000 RcSb Silverado.

  2. #2
    Join Date
    Nov 2003
    Location
    Denton Texas
    Posts
    20,540
    more displacement normally means more HP and TQ unless something is wrong with the engine.
    See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709

  3. #3
    Join Date
    Mar 2009
    Location
    Lubbock,Tx.
    Posts
    23
    Ok well sofar i dont think anything is wrong with it, will do an inspection before i put it in of course.

  4. #4
    Join Date
    Mar 2009
    Location
    Lubbock,Tx.
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    23
    Can anyone also tell me would it be better to use the 5.3 heads or the 6.0 317 heads?? Thanks

  5. #5
    Join Date
    Nov 2007
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    THE MEAN STREETS OF OKLAHOMA
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    11,119
    What heads are on the 5.3, but you're Polly better off using the 6.0 heads because the others will screw with compression although 317s suck but like Greg said the 6.0 will be better in the long run for power.
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  6. #6
    Join Date
    Mar 2009
    Location
    Lubbock,Tx.
    Posts
    23
    Damn i dont remember what type of heads are on the 5.3, Im in lubbock and my trucks in lufkin. I will just go with the 6.0 heads and a good texas speed cam.

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