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Thread: will ported and polished heads affect smog test?

  1. #1
    Senior Member SENIOR BUILDER
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    Apr 2007
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    105

    will ported and polished heads affect smog test?

    I found a good deal on some sbc heads ported and polished.I am currently running full rollers 1.52 ratio on stock heads.I still have to smog.Will the port and polish make my numbers go up on the smog test and cause a fail?Any info for more performance and pass smog?Chime in.I've done the flowmaster exhaust,full roller rockers,flamethrower distributor,new tranny with shift kit..Electric fan is on the way.Was thinking electric water pump.But dont think thats to good for everyday driving.I'm open on all your thoughts.Kinda makes it more technical trying to get all you can get and pass smog test.Makes you think twice about the combo.Will a computer out think the true engine guru's?GURU'S chime on in.

  2. #2
    Senior Member DYNO OPERATOR
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    VA Hospital, Dallas, Tx (214 302 1924) cell-972-464-7400
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    Much more info is needed.

    What is it now?
    What modifications already done?
    What kind of vehicle and the year?
    What are your goals?
    What is it to be primarily used to do?

    Not all vehicles need to meet the same criteria. Some states are different too. What state ar you in?

    Usually an ok or a good porting job will not mess up a smog test. A bad port butchering job can.

    Ed
    " Let all things that hath breath, praise the Lord. Praise Ye the Lord" Psalms 150 vs 6.

  3. #3
    Senior Member SENIOR BUILDER
    Join Date
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    105
    Quote Originally Posted by edvancedengines
    Much more info is needed.

    What is it now?
    What modifications already done?
    What kind of vehicle and the year?
    What are your goals?
    What is it to be primarily used to do?

    Not all vehicles need to meet the same criteria. Some states are different too. What state ar you in?

    Usually an ok or a good porting job will not mess up a smog test. A bad port butchering job can.

    Ed
    Thanks Ed.I posted the mods I have done.77 350 impala coupe fast back rear window.My goal is to sooner or later take it off the streets and use for 1/4 mile use.I live in Calif where they dont B/S about smogs.The numbers are being lowered to pass every year here in Calif. I went to pick the heads up today.I was told they were in good shape.I dont know if it was dog piss or if the heads were used as boat anchors.I passed on them. Thanks for your reply.[/img]

  4. #4
    Senior Member RACING JUNKIE
    Join Date
    May 2006
    Posts
    2,044
    Save ur money on them heads, buy that electric fan that will free at least 20 or more ponies-something you'll defiently feel when you stomp on it and you wont even be creating anymore green house gasses than before....lol
    P.S. Dont fret worrying about an electric pump on a daily driver, most out flow OEM factory pumps big time, now accessories and electric pumps?? thats another story.
    Goodluck, Charles
    ***IN GOD WE TRUST***


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