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Carb,s

  1. #1
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    Default Carb,s

    What is a good set of carb,s for tunnel ram? Jet, 18' , bbc,around 600 hp, river, lake boat, have a set of 660 on it now. Thank you.

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    Quote Originally Posted by Bobbylisa View Post
    What is a good set of carb,s for tunnel ram? Jet, 18' , bbc,around 600 hp, river, lake boat, have a set of 660 on it now. Thank you.
    How big is the motor? You are already putting 1320 cfm to it. I nay be sick but I like the 660 center squirter carb, it just takes alittle tuning savy to make them work.M

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    Motor is a 496, they they seem to work fine it's just they run fat at mid throttle.

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    Quote Originally Posted by Bobbylisa View Post
    Motor is a 496, they they seem to work fine it's just they run fat at mid throttle.
    What's the engine doing that leads you to believe it's fat at mid throttle? Would you rather tune the ones you have or buy different carbs and tune those?

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    If I'm not in it hard plugs are really black alway, if I could tune these a little better that would be great,

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    There are WAY better choices than 660's for a TR. Unfortunately, unless you're willing to mount them sideways, your choices are far more limited. Any pair of plain old 4777 or 4779 (650 or 750) carbs can work real well on an engine like yours. They can be converted to run in-line if that's your choice.
    It's pretty hard to tune out the part throttle "fatness" of the 660's since they were designd to be a strictly WOT drag race carb and never meant to run at part throttle.
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    To run them in line can i just put the bowl,s of the 660 on them?

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    Quote Originally Posted by steelcomp View Post
    There are WAY better choices than 660's for a TR. Unfortunately, unless you're willing to mount them sideways, your choices are far more limited. Any pair of plain old 4777 or 4779 (650 or 750) carbs can work real well on an engine like yours. They can be converted to run in-line if that's your choice.
    It's pretty hard to tune out the part throttle "fatness" of the 660's since they were designd to be a strictly WOT drag race carb and never meant to run at part throttle.
    Oh shoot, that's right. These are the ones with the 1:1 secondary actuation and a metering plate in the secondaries. It'll take more headache than it's worth to get them to work well in a non-race application. Can be done, but way easier to start with the right carb.

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    Quote Originally Posted by steelcomp View Post
    There are WAY better choices than 660's for a TR. Unfortunately, unless you're willing to mount them sideways, your choices are far more limited. Any pair of plain old 4777 or 4779 (650 or 750) carbs can work real well on an engine like yours. They can be converted to run in-line if that's your choice.
    It's pretty hard to tune out the part throttle "fatness" of the 660's since they were designd to be a strictly WOT drag race carb and never meant to run at part throttle.

    x 2!! Jocko

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    I know better but here goes.....

    I ran 660's on a TR2X for 10+ years and they worked great regardless of what ANYONE says. Motor was a Sghieza built .060 over 427 (440) BBC in a Fresno true flat that ran a 102 mph at Red Bluff but.... It was also a very functional every weekend ski boat. The carbs had worked over by some carb guy (Doug Dye or ???) before I bought the boat and he had ground the cams so the secondary's didn't open until later...... I know, I know, I KNOW there are conflicting opinions about that but they worked well for me for a lot of years

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    Any body ran a set of 90770 holley s in line?

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    Holley 6109`s is a good choice if you can find em. Stay away from the 4224 center squirters.

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    Bobbylisa ..... Do yourself a favor and call John Moreland at 552-229-0222 .... ask him if there is something he could do to your 660's to make em better/more efficient (work right) or should you look for some 6109's (which are great carbs) OR .... What would he recommend for what you are trying to accomplish.

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    Quote Originally Posted by Franger View Post
    Bobbylisa ..... Do yourself a favor and call John Moreland at 552-229-0222 .... ask him if there is something he could do to your 660's to make em better/more efficient (work right) or should you look for some 6109's (which are great carbs) OR .... What would he recommend for what you are trying to accomplish.
    I believe the number is 562-229-0222



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