tunnelram carb setup
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tunnelram carb setup

  1. #1
    Senior Member sandeggo's Avatar
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    Default tunnelram carb setup

    I have dual 450 holleys on my tunnelram. list #9776. mechanical secondary single inlets. right now they're currently setup inline.
    I am planning to redo the linkage and turn them sideways.
    Is there a benefit to changing out the bowls to the V style bowls?
    Should i get the choke horn milled off?
    is the enderle linkage the way to go?
    If i convert the bowls over should i feed both bowls or still run the single inlets?
    Im purchasing the clay smith pump and would like recommendations on a regulator. how many ports etc.
    Current setup

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    just a ski boat with bark Carnivalride's Avatar
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    Ok first off why do you want to turn them sideways? You have a nice looking set up there and I guess I don't see any gains in going sideways unless you just want to. I'm not against it just asking, my 750dps are turned sideways.

    Enderle makes a nice linkage for the sideways carbs and it works well for me.

    Milling the choke horns only gains about 20cfm per carb and you have 900cfm right now, with th eexhaust logs I wouldn't bother if it were mine.

    being you only have 450s I don't see dual feeds being needed but they won't hurt. I can't answer your float bowl question I've only run the "cathedral" bowls sideways.
    Quote Originally Posted by gn7 View Post
    Carnivalride, you really need to find some other hobby. You have no talent for this boat thing

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    Senior Member sandeggo's Avatar
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    simple answer is to make working on the carbs alot easier like jet changes.
    to change the jest now involves pulling the whole assembly apart. out of pure laziness and not wanting to disassemble everything i ran rich the whole season.
    Quote Originally Posted by Carnivalride View Post
    Ok first off why do you want to turn them sideways? You have a nice looking set up there and I guess I don't see any gains in going sideways unless you just want to. I'm not against it just asking, my 750dps are turned sideways.

    Enderle makes a nice linkage for the sideways carbs and it works well for me.

    Milling the choke horns only gains about 20cfm per carb and you have 900cfm right now, with th eexhaust logs I wouldn't bother if it were mine.

    being you only have 450s I don't see dual feeds being needed but they won't hurt. I can't answer your float bowl question I've only run the "cathedral" bowls sideways.

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    Senior Member Josh@JBP's Avatar
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    x2 keep them inline, you have nothing to gain. If i was going to do anything i'd face them forward. It looks clean.

  7. #5
    steelcomp was here
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    Quote Originally Posted by sandeggo View Post
    I have dual 450 holleys on my tunnelram. list #9776. mechanical secondary single inlets. right now they're currently setup inline.
    I am planning to redo the linkage and turn them sideways.
    Is there a benefit to changing out the bowls to the V style bowls?
    Should i get the choke horn milled off?
    is the enderle linkage the way to go?
    If i convert the bowls over should i feed both bowls or still run the single inlets?
    Im purchasing the clay smith pump and would like recommendations on a regulator. how many ports etc.
    Current setup
    To answer your questions,
    You already know the benefits
    Don't bother with the choke horns
    Any of the sideways linkage kits seem to be the same
    If you convert to center inlet bowls you'll hve to feed both bowls
    The easiest way to feed all four bowls is with a four port regulator. Any of them will do for what you're doing...pick the one that looks the coolest or is easiest to mount.
    If God is your co-pilot, change seats!
    Acts 2:38, the perfect answer to the perfect question.

  8. #6
    Senior Member sandeggo's Avatar
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    shauns setup is really clean.

    so i would just need 2 of these with pump provisions and 2 without? is there anything else that needs to be changed?
    http://www.holley.com/134-73S.asp
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  9. #7
    gn7
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    Quote Originally Posted by sandeggo View Post
    shauns setup is really clean.

    so i would just need 2 of these with pump provisions and 2 without? is there anything else that needs to be changed?
    http://www.holley.com/134-73S.asp
    Yes, you need 4 floats, 4 float hinges, 8 float hinge screws, and you probably should change the needles/seat assembles.



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  10. #8
    Senior Member sandeggo's Avatar
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    Quote Originally Posted by gn7 View Post
    Yes, you need 4 floats, 4 float hinges, 8 float hinge screws, and you probably should change the needles/seat assembles.
    thank you

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    Senior Member rogerroost's Avatar
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    so your going to do all that 4 bowls,linkage , feeds,etc.,basicly try to make these be 4150's ,to make it easier to change jets???

  12. #10
    gn7
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  13. #11
    Senior Member sandeggo's Avatar
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    Quote Originally Posted by rogerroost View Post
    so your going to do all that 4 bowls,linkage , feeds,etc.,basicly try to make these be 4150's ,to make it easier to change jets???
    When it's 100+ out would you rather spend over an hour disassembling your whole fuel system to jet your carbs or 15 minutes?

  14. #12
    gn7
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    Quote Originally Posted by sandeggo View Post
    When it's 100+ out would you rather spend over an hour disassembling your whole fuel system to jet your carbs or 15 minutes?
    Why are you jetting this thing so much. When you get done with the boat, you re-jet you your car or truck.
    I re-jet my deal once a year when we go to Burley Id. and change it back when we return.
    Just looking for that very last HP?



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  15. #13
    Team CJ460 Just Electric's Avatar
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    i feel your pain but my fix was just a hotter plug after i got mine dialed in. ican agree for having them sidewyas but im cheap and would rathe run my 660's inline and use the money for other parts.keep us posted

  16. #14
    Senior Member sandeggo's Avatar
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    Quote Originally Posted by gn7 View Post
    Why are you jetting this thing so much. When you get done with the boat, you re-jet you your car or truck.
    I re-jet my deal once a year when we go to Burley Id. and change it back when we return.
    Just looking for that very last HP?
    Still trying to tune it. I'll be the first to admit I'm still learning to tune
    Last edited by sandeggo; 11-05-2010 at 04:54 PM.

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