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Thread: 5.3 Build

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  1. #1
    Join Date
    Aug 2007
    Location
    Texas
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    159

    5.3 Build

    Looking for positive input on this motor.

    Going to be a daily driver for one of my 2 trucks in the future, I want to get maybe 30 or so more ponies over stock.

    I have a set of LS-1 heads to bolt on also , going to mill them 30 for more compression since they have bigger chambers.


    looking for a bigger cam but unsure on a proven size.


    Can I get the HP from the heads and cam and proper tune?
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  2. #2
    Join Date
    Sep 2010
    Location
    McPherson KS
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    556
    easily... Im not for sure just how much youll pick up from that, but it should be over 30. Toss in a CAI and some LTs and youll be golden.
    Always buying things I dont need to impress people I dont know

  3. #3
    Join Date
    May 2008
    Location
    Crowder, OK
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    8,005
    Full bolt ons and a tune will exceed 30 RWHP. No need for cam/heads if thats all you are looking for.

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  4. #4
    Join Date
    Aug 2007
    Location
    Honeywood, Ontario
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    6,994
    Just so you know the only difference between 5.3 heads and LS1 heads is the combustion chamber (The LS1 being larger) so you'll gain more from milling the truck heads.
    2006 Silverado
    Little Black Bitch

  5. #5
    Join Date
    Apr 2009
    Location
    42141
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    714
    wouldnt milling 241's be like a 862?
    Blessed be the Lord my strength which teacheth my hands to war, and my fingers to fight:
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  6. #6
    Join Date
    Aug 2007
    Location
    Texas
    Posts
    159
    OK, they are 806's castings which are the "worst" of the ls1 series head , the best would be the 243 from a Z-06 motor. true statement ?



    these should flow 240cfm 69cc ? , Theres really no noticable performance difference between most in stock form.



    I know I can get the 30 ponies with bolt on but would like to get this 30 straight from the motor, whats a good cam to work with this head that will wake it up a bit?


    just post a few up and I'll spec them out, thanks
    Last edited by 1fastchevy; 12-06-2010 at 05:34 PM.
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