The annoying story of the fluid drives

67Dart273 said

Actually that driveshaft E brake should work WELL because it employs the leverage of the rear gear ratio. I would investigate it thoroughly, bad/ damaged lining, out of true/ grooved/ etc drum, whatever. "When those worked" they really worked better in some ways to the later rear wheel brakes.

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When the e-brake lining is not soaked in engine or trans 90W gear oil (and all those old trans and engines leak), and you have it properly adjusted (that is an art form that has to be done quite often), it works - however, you will still block the wheels on inclines to feel more secure.

I adjust mine every oil change. Takes longer than changing the oil.