Quote:
Originally Posted by Tom Kirkham
Every carb is different. You will need a wide band O2 sensor to get to the right size hole. It is safer to start with bigger. A quick way to see if this is what you need to do is insert a piece of wire in the PVCR to make the effective hole smaller.
In the stock Holley metering block I am not aware of any inserts in the PVCR. Of course in the idle circuit their typically is a brass insert.
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Tom,
can you envision just using the air bleed jets instead of a brass set screw ? Is there enough material in the metering block to set the bleed jets in deep enough to clear the power valve ?
Z. Ray