Jetting a 950 down
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Jetting a 950 down

  1. #1
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    Default Jetting a 950 down

    How's it going. Im looking to get some advice on a 950 quick fuel carb that I just got in trade. I'm currently running a 825cfm 4165 Holley which came stock on my Hardin 454 from day one. I have since freshened it up with a 30 over bore and a comp 280h cam. I'm running logs and dual plane edelbrock. Just a cruiser engine for my minidaycruiser....
    I have just did some quick side job tradework for a quick fuel. 950cfm. I ditched the spread bore 825 and manifold and went with a performer rpm. It's the tallest Mani I can fit under my lid.
    Anyways. Can I make this carb work ok for my engine. If so what should I do to get it done?

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  3. #2
    Some guy obnoxious001's Avatar
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    Quote Originally Posted by Farnorcaljetter View Post
    How's it going. Im looking to get some advice on a 950 quick fuel carb that I just got in trade. I'm currently running a 825cfm 4165 Holley which came stock on my Hardin 454 from day one. I have since freshened it up with a 30 over bore and a comp 280h cam. I'm running logs and dual plane edelbrock. Just a cruiser engine for my minidaycruiser....
    I have just did some quick side job tradework for a quick fuel. 950cfm. I ditched the spread bore 825 and manifold and went with a performer rpm. It's the tallest Mani I can fit under my lid.
    Anyways. Can I make this carb work ok for my engine. If so what should I do to get it done?
    Short of pulling the engine and running on a dyno, you could try calling quick fuel to see what they recommend. Other way is to go run the boat and do some plug readings (buy some new plugs and get some instructions on reading spark plugs if you are not familiar, or get someone to help you who does know). Cheapest way I know to buy Holley jets is in the box, rather than set by set. Another hint is to buy them from Summit, under the Summit label.

    If you are new to the whole carb tuning deal, probably best bet is to post the area where you live, or what body of water you plan to test on, and see if someone offers to help. I am in Parker if that does you any good.

  4. #3
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    my buddy was running the carb on his stock 454 and it ran pretty good but was fat. Im thinking I can go down one size on the jets? I bought new plugs and 2 sizes smaller jets for the primary and secondaries? Sound ok?

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  6. #4
    Some guy obnoxious001's Avatar
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    Quote Originally Posted by Farnorcaljetter View Post
    my buddy was running the carb on his stock 454 and it ran pretty good but was fat. Im thinking I can go down one size on the jets? I bought new plugs and 2 sizes smaller jets for the primary and secondaries? Sound ok?
    Your engine is not the same as your buddy's. I would run it before you lean it out.

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