Idle Transfer Slot on secondaries?

tjpatte said
Do this to both carbs regardless of which one you wish to use. This will calm down your idle circuit and make tuning exponentially easier.

The standard Holley metering blocks come with the IFR in the right location.

tjpatte said
No Sir, not sure if any carbs actually come with them,

They do. I just pulled some out of a 650 HP main body as I paired it with a stock Holley base plate.