who is running a dominator?
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who is running a dominator?

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    SDBA #819 vdrivegrimes's Avatar
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    Default who is running a dominator?

    who is running a 1050 dominator carb? would there be any benefit for me switching from a 4150 flange QFT 1050 to a holley dominator?

    motor is just a hair over 12-1cr 496 with rec port heads with 345cc runners. no clue on hp

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    Senior Member dankdave79's Avatar
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    I have a 1050 for sale in the parts section if ur intrested. Ran great on my 588 . I took it off for a bigger 1150

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    SDBA #819 vdrivegrimes's Avatar
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    Quote Originally Posted by dankdave79 View Post
    I have a 1050 for sale in the parts section if ur intrested. Ran great on my 588 . I took it off for a bigger 1150
    it was your carb that got me thinking about all this

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    Default dominator

    I run an 1150 on my 496" 13.9-1 comp. Real happy with it.

    Jerry

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    Some guy obnoxious001's Avatar
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    Quote Originally Posted by vdrivegrimes View Post
    who is running a 1050 dominator carb? would there be any benefit for me switching from a 4150 flange QFT 1050 to a holley dominator?

    motor is just a hair over 12-1cr 496 with rec port heads with 345cc runners. no clue on hp
    I think the key question is, what kind of RPM are you turning?

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    steelcomp was here
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    With those heads you might as well.
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    Thats some thing I've wondered. QF has a 1050 dom and a 1050 4150. I assume they both flow 1050 cfm. So, what would make the difference as to which one to use?

    Tim

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    I think going from a 4150 flang to a Dominator flang will be the big difference. Both carbs flow the same but the 4150 flange would be more restrictive.

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    gn7
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    Quote Originally Posted by Ol Blue View Post
    I think going from a 4150 flang to a Dominator flang will be the big difference. Both carbs flow the same but the 4150 flange would be more restrictive.
    Carbs are rated by a given pressure drop, regardless of their falnge bolt pattern,
    They can both flow 1050 at the same pressure drop, and I would rather have the 4500 dominator than the 4150 at anything over 850. The largest throttle blade on a 4150 is 1 3/4". To get the CFM up, they have to open up the venturi. The shape os the venturi is less than ideal. The diameter to height is compromised. This makes the carb less responsive at anything less than WOT. Whereas the Dominator uses a 2" throttle blade and much better shaped, taller venturi.
    The 1050 QF 4150 uses the same main body as the Holley 1000 4150. Both carbs are fine for use when there is a throttle blade diameter rule that restricts the blade to 1 3/4". But anytime you try to gain that much CFM by way of a venturi, you're making compromises.

    In almost all cases the dominator will be a better carb than the 1050 4150. It may not be any faster, or make any more HP at WOT, just better throttle response and better part throttle metering.



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    SDBA #819 vdrivegrimes's Avatar
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    thats some great info

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    steelcomp was here
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    Quote Originally Posted by gn7 View Post
    Carbs are rated by a given pressure drop, regardless of their falnge bolt pattern,
    They can both flow 1050 at the same pressure drop, and I would rather have the 4500 dominator than the 4150 at anything over 850. The largest throttle blade on a 4150 is 1 3/4". To get the CFM up, they have to open up the venturi. The shape os the venturi is less than ideal. The diameter to height is compromised. This makes the carb less responsive at anything less than WOT. Whereas the Dominator uses a 2" throttle blade and much better shaped, taller venturi.
    The 1050 QF 4150 uses the same main body as the Holley 1000 4150. Both carbs are fine for use when there is a throttle blade diameter rule that restricts the blade to 1 3/4". But anytime you try to gain that much CFM by way of a venturi, you're making compromises.

    In almost all cases the dominator will be a better carb than the 1050 4150. It may not be any faster, or make any more HP at WOT, just better throttle response and better part throttle metering.
    I couldn't disagree with this more. When you leave out any mention of the booster you're only telling half the story. There are plenty of examples where a 4150 will get down the track quicker than a 1050 on a given combination.
    The 1050 has a venturi of 1.690, the 1000HP has a venturi of 1.560. The smaller venturi will have higher airspeed at the same flow rate...higher perssure drop, better signal and atomization. Always. The 1050 is great for WOT but no where near as clean or responsive as a 1000hp.
    Last edited by scott foxwell; 03-01-2012 at 11:13 AM.
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    steelcomp was here
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    Quote Originally Posted by River Rat 005 View Post
    Thats some thing I've wondered. QF has a 1050 dom and a 1050 4150. I assume they both flow 1050 cfm. So, what would make the difference as to which one to use?

    Tim
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    Senior Member Widetrack's Avatar
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    Quote Originally Posted by steelcomp View Post
    I couldn't disagree with this more. When you leave out any mention of the booster you're only telling half the story. There are plenty of examples where a 4150 will get down the track quicker than a 1050 on a given combination.
    The 1050 has a venturi of 1.690, the 1000HP has a venturi of 1.560. The smaller venturi will have higher airspeed at the same flow rate...higher perssure drop, better signal and atomization. Always. The 1050 is great for WOT but no where near as clean or responsive as a 1000hp.

    So with a T/R this is the same?


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    Quote Originally Posted by Widetrack View Post
    So with a T/R this is the same?
    Technically, yes. Again, it's all application specific.
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