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port and polish question

Discussion in 'The Garage' started by Guss, Sep 16, 2005.

  1. Guss

    Guss Registered Member

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    stock 5.7 tbi if port and polished will stock tbi be enough to fuel the beast?
     
  2. tarussell

    tarussell 1/2 ton status

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    Dude , we need more info ........ Just how much of a "Beast" do you have ?
     
  3. Jagged

    Jagged 1 ton status

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    ... money spent polishing stock 350 heads can be better spent elsewhere first. I see polishing as more of a 'finishing touch' on an engine build, not a place to start with.
     
  4. Guss

    Guss Registered Member

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    5.7 stock with stock tbi but am building new/fresher of the same as not to use
    the worn out one i have much longer. havnt decided if im gonna cam the new one or not but what the heck might as well port and polish while im in there if the tbi will still work.


    i will do the job myself so the money not an issue when the only real work ill pay for is the valve job.
     
  5. uglyangelracing

    uglyangelracing 1/2 ton status

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    If your plan is to just to pull heads and stock intake, port and polish them, then reinstall. I wouldnt even bother. Truthfully it should be done to take advatage of a performance cam, intake, and exhaust.
     
  6. Jagged

    Jagged 1 ton status

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    Not to knock on you or anything, but that almost makes no sense; pay for a valve job but port/polish yourself. Do you do headwork regularly?
     
  7. Guss

    Guss Registered Member

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    im a macinery technician and not regularly but ive done a few over the years
    never did the valves myself i set and adjust valves regularly but never installed
    new. usualy if its that bad the head gets replaced.
     
  8. Mad-Dog

    Mad-Dog 1/2 ton status

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    Port match the Intakes, deburr the Intake runners and polish the exhaust side........the TBI won't care.

    Do not polish the Intake side, leave it rough.

    Do a lttle bowl blending to increase flow around the guides.
     
  9. dyeager535

    dyeager535 1 ton status Premium Member

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    Better idea, don't waste the time and just go buy heads that will be better in every way shape and form no matter how much work you do to the TBI heads.
     
  10. Guss

    Guss Registered Member

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    cant just buy heads i have this issue called wife and 3 kids.
     
  11. cybrfire

    cybrfire 1 ton status Vendor GMOTM Winner

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    If you have the time and the inclination then go for it. It will help but you probably won't feel the difference in the seat of the pants dyno. But hey, if you add a cam later its already done.
     

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