Very interesting.

The 3461184 master cylinder is for manual drum only, yet your tag is stamped PWR for power. That does not add up. Perhaps later NOS pieces like yours (with the wider reservoir and unequal fluid cavities than the assembly line units)were calibrated to use with both manual and power?

Here are the applications:

3461176 71 B/E-Body Power Disc
3461178 71 A-Body Power Disc
3461182 71 B/E-Body Power Drum
3461184 71 B/E/A-Body Manual Drum

Does anyone have a 1184 tag that does NOT have PWR stamped on the end? This would probably be found on the assembly line and early NOS replacement units with the narrow reservoir that have both fluid cavities the same size.

Thanks,

Bill Rolik