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Thread: 03 Z06 Heads????

  1. #1

    03 Z06 Heads????

    Is it worth putting 03 Z06 heads on an 5.3L? Does it give you more/less clearance. Higher/lower compression?

  2. #2
    Join Date
    Jul 2008
    Posts
    329
    You will get bigger intake valves, more flow potential, and lower compression. Unless you're planning on mods that will significantly increase air flow, there's no real benefit gained - except a lighter wallet.

  3. #3
    I can get them for $650 for both and they only have 6000mi on them. complete except rockers. Do they flow better? I would think so.

  4. #4
    Join Date
    Nov 2003
    Location
    Denton Texas
    Posts
    20,540
    Too much money IMO.
    See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709

  5. #5
    Join Date
    Dec 2007
    Posts
    3,429
    Quote Originally Posted by RedHeartbeat View Post
    Too much money IMO.
    +1. You can find some 243's (C5 ZO6 heads) for a little bit cheaper than that.
    30' Ford Model A Tudor Sedan - Custom chassis - Big bore LS2 - twin B76's - Glide - 9" w/ 3.07 gears - 30" DR tire - 2k lbs cruiser

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