1964 225 Slant Six with Replaced Electronic Ignition but with No Kick-Down on Torqueflite

RustyRatRod said

The distributor vacuum advance and throttle pressure linkage on the transmission are TOTALLY 100% unrelated and I have no clue why anyone would eliminate the throttle pressure linkage to the transmission. IT must, must, MUST be attached and adjusted properly or the transmission will burn up. If it has been driven any length of time at all without it, the damage is already done.

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(My apologies for incorrectly stating my previous issue!)
I hear and see what you are saying, so let me restate my issue.

The Torqueflite Transmission goes through all three ranges smoothly. However, there is no Passing Gear (downshift range) when you stomp on the throttle as it used to have, nor does the Torqueflite Trany automatically downshift when going up a steep hill.

What might be the obvious problem after the Shop installed an Electronic Ignition System (I noticed there is no longer a vacuum advance outside the distributor housing.)?

Thank you for your patience with me and my Shade Tree Mechanic explanation of the issue!