05-12-2009, 06:48 PM
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CC Member
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Join Date: Jul 2005
Location: Bartlett,
Ill
Cobra Make, Engine: Everett-Morrison LS1
Posts: 2,448
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Not Ranked
does your carb have the idle eze adjustment in the center of the base plate?
On many carbs I find that there is a burr inside the transfer slot cutout, and the throttle plates aren't adjusted properly---they should be opened to the point that the exposed slot looks like a square hole, not covered and not opened excessively to where the slot looks long. Sometimes I will use a small drill and pin vise to make the exposed holes even by closeing the blades and broaching the hole to .025 by pulling the drill thru the hole.
If both the primaries and secondaries are done this way and you don't have an idle eze adjustment , you can drill a 3/32 hole in the center plug of the base plate---on Holley carbs, I first tap this hole for a 1/4 npt plug and drill it from 3/32 up to maybe as much as 1/8 on big motors.
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