Reply to "Holley 650 Question"

panteradougMember

I think that it's not whether or not you need a choke. The choke itself primarily makes the car start easier. It also speeds the idle up at partial opening to compensate for low engine rpm due to cooler engine and air temps.

If one is not particular about what rpm the engine idles whether it be high or low you can run without it particularly if your car runs a heavy idle like a Holley "double-pumper" does.

A Holley with a vacuum secondary and from OEM would need a choke to operate at all in cold weather. You would find that at 20 degrees something like a 1848 wouldn't idle at all under 2000 rpms without a choke.

The idle circuit on that carb is set lean. Without the choke flap there would be no way to richen the mixture automatically at idle.

3/21/071:33 PM

<ul id="{%=id%}ButtonGroup" class="button-group h-popup-buttons even-button-group even-1">
    <li id="{%=id%}Okay_buttonContainer"><a id="{%=id%}Okay" href="javascript:void(0);" class="button success no-margin-bottom h-alert-modal-ok-button" role="button">OK</a><script type="text/javascript">
        (function() {
            function {%=id%}Okay_click(event, data) {
            {%=id%}Popup.hide();
        }
        
                $('#{%=id%}Okay').on('click', {%=id%}Okay_click);
        })();
    </script></li></ul><a href="javascript:void(0);" class="close-reveal-modal" aria-label="Close Modal">&#215;</a><div class="last-modal-focus focus-utility-element" tabindex="0"></div>
</div>
<script type="text/javascript">
        (function() {
            {%=id%}Popup = new SS.Popup.ModalPopup('{%=id%}');
        })();
    </script>

Skip to main content

Membership Required

Remove From Your Block List

Manage Follow Preferences

Block

Please wait...