Carburetor Selection
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Carburetor Selection

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    "Floatin' Motor" BoNeS's Avatar
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    Post Carburetor Selection

    Need your guy's input and/or opinion on selecting a new carb. What i have now is a Holley 4160 750-DP(3310-2), its ancient. Need some reccomendations on what carb i should replace this with.

    Details

    454 BBC (stock), 330hp, Edelbrock Torker 2-0 manifold, runs on gasoline

    Let me know if there's anything else that needs to be known, Thx in advance.

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    Senior Member CK7684's Avatar
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    Why not a new one that's the same thing?

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    Senior Member harley222's Avatar
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    well does it run good now, im just guessin but i would stick with what works and i think a holley 750 sounds about right...Its a holley throw a rebuild kit in it and give it a try..

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    "I'm just SPRAYIN' man!!" '78 Crusader's Avatar
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    Quote Originally Posted by BoNeS View Post
    Need your guy's input and/or opinion on selecting a new carb. What i have now is a Holley 4160 750-DP(3310-2), its ancient. Need some reccomendations on what carb i should replace this with.

    Details

    454 BBC (stock), 330hp, Edelbrock Torker 2-0 manifold, runs on gasoline

    Let me know if there's anything else that needs to be known, Thx in advance.
    I'm running a similiar set up as you, Edlebrock Torker II intake and an ancient Holley 750 3310. I went to the Holley website, put in all of my requirements and it recomended I go with the Holley 850 CFM Model 4150 4 Barrel Marine Carburator Part #: 0-80443

    While a 750 may suite your needs, and 850 would really make a difference.

    Go to http://www.holley.com/ and see for yourself.

    A buddy of mine is running a stock 454 like yours and he put the Holley 850 marine carb 0-80443 on his motor and it woke it up nicely....
    Last edited by '78 Crusader; 11-02-2010 at 11:08 AM.
    Cliff
    1978 21' Crusader, 466 CID BBF, Berkely Jet
    1966 13' Boston Whaler sport, 40 HP Yamaha Two Smoker

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    Senior Member YumaJet's Avatar
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    imo, a 750dp is alittle much for a 330hp motor. I have about 400hp, with a 750dp and when I changed the carb jet's, the motor didn't like it. But every motor is different. Too much carb defeats the purpose sometimes.
    boatless....

  8. #6
    "I'm just SPRAYIN' man!!" '78 Crusader's Avatar
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    Jets and CFMs are different topics. Changing the jets increases or decreases the fuel flow while the CFM is the amount of air the carb can input into the motor.
    Cliff
    1978 21' Crusader, 466 CID BBF, Berkely Jet
    1966 13' Boston Whaler sport, 40 HP Yamaha Two Smoker

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    Quote Originally Posted by YumaJet View Post
    imo, a 750dp is alittle much for a 330hp motor. I have about 400hp, with a 750dp and when I changed the carb jet's, the motor didn't like it. But every motor is different. Too much carb defeats the purpose sometimes.
    i agree ...IMO, a 650/700cfm DP mech sec carb would be a better choice!...its a "stocker"...would get much better fuel mileage & still perform quite well...remember...bigger is NOT always better! ...just sayin' my .02 cents

    FastRat

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    Senior Member harley222's Avatar
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    well i dont me to thread jack but im running a 429/460 BBF with a big cam and a torker 2 intake, any ideas on what sive carb i should run?

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    Super Moderator HammerDown's Avatar
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    Quote Originally Posted by '78 Crusader View Post
    I'm running a similiar set up as you, Edlebrock Torker II intake and an ancient Holley 750 3310. I went to the Holley website, put in all of my requirements and it recomended I go with the Holley 850 CFM Model 4150 4 Barrel Marine Carburator Part #: 0-80443

    While a 750 may suite your needs, and 850 would really make a difference.

    Go to http://www.holley.com/ and see for yourself.

    A buddy of mine is running a stock 454 like yours and he put the Holley 850 marine carb 0-80443 on his motor and it woke it up nicely....
    True > like use MORE fuel
    My 850 DP I tried (actually spent a lot of time tuning) vs my little 715vc really did NOTHING on my 468, that spins 5400 with an AA-impeller...but used more fuel
    It did pull a little harder from all the fuel dumped > but gained NOTHING at max RPM.

    > I'd bet dollars to donuts the 750 is just fine for the HP requirements of the OP's 454
    <img src=http://www.performanceboats.com/gallery/data/500/medium/06-30-11_1234.jpg border=0 alt= />

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    gn7
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    Quote Originally Posted by BoNeS View Post
    [B]Need your guy's input and/or opinion on selecting a new carb. What i have now is a Holley 4160 750-DP(3310-2),
    3310-2 are not double pumpers. They are vac sec.



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    Senior Member lbhsbz's Avatar
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    Quote Originally Posted by gn7 View Post
    3310-2 are not double pumpers. They are vac sec.
    Double pumper vacuum secondary??



    LOL. I found this when I took apart one of the carbs I bought.

  14. #12
    Senior Member YumaJet's Avatar
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    Quote Originally Posted by '78 Crusader View Post
    Jets and CFMs are different topics. Changing the jets increases or decreases the fuel flow while the CFM is the amount of air the carb can input into the motor.
    I should've described it better. The motor doesn't make enough power for the 850DP.


    Quote Originally Posted by harley222 View Post
    well i dont me to thread jack but im running a 429/460 BBF with a big cam and a torker 2 intake, any ideas on what sive carb i should run?
    Big Cam meaning? .700 plus lift? The intake isn't doing much and without knowing anything else, it's hard to say. My torker intake didn't do much for my current mild set-up, so I switched to a victor jr. intake. It opened up, and wasted a lot more fuel.

    A Holley 750 or 850 double pumper (true) with mechanical secondaries will work fine. I usually use a Holley 750DP as a starting point when I build mild motors. Depending on the application and bottom end, you match the carb the best way possible.
    boatless....

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    JRPM/e-PerformanceMarine Squirtin Thunder's Avatar
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    Quote Originally Posted by lbhsbz View Post
    Double pumper vacuum secondary??



    LOL. I found this when I took apart one of the carbs I bought.
    I have seen that so much lately, What the hell ?
    Jim & Amanda Rich
    CJ 72 & 53c

    JR Performance Motorsports

  16. #14
    JRPM/e-PerformanceMarine Squirtin Thunder's Avatar
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    Quote Originally Posted by harley222 View Post
    well i dont me to thread jack but im running a 429/460 BBF with a big cam and a torker 2 intake, any ideas on what sive carb i should run?
    An 850dp will work great !
    Jim & Amanda Rich
    CJ 72 & 53c

    JR Performance Motorsports

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