Back in the early 80's (high school) I worked at Western Auto and they sold a flush kit with about 10 different sized rubber cones with metal tubes in each for flushing blocks (made for freeze plug holes) if that kit is still being made it's your best bet on getting a good flush done, although you have to cut the threaded end off your garden hose to use it....
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"When the Team Chief said.... You're trapped in a hole with nothing but a goat and a slinky, what do you do? Stubby said, I'm not sure but it won't end well for the goat...." ~(Overheard) Last day, Phase 3, Q Course
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