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  1. Moparfiend

    Idle Transfer Slot on secondaries?

    Carb is a Holley 650 Double Pumper. Does the idle circuit use the transfer slots on the secondary as well as the primary? Or are the secondary transfer slots for smoothing the transition from primary to secondaries? Or another way to ask. Do I need to have the transfer slots on the...
  3. Moparfiend

    Holley 4150 Manual Choke Question

    Maybe a more general question but here it goes: Does the Holley 4150 (with a manual choke) operate a high speed idle cam or is that cam only for the bimetallic electric choke set up?
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