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How does the nut come out of the block on a '91 Astro 4.3 the block heater is leaking?

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Answered 2014-02-10 16:32:55

Some have a nut in the center,U take off the nut,etc-Others U take out like a Regular freeze-plug00just knock it in & B sure 2 REMOVE ALL the Pieces.A g00d time 2 flush out,from the freeze plug hole.IF U don't go in2 Freezing weather I would install a BRASS Plug & U won't have 2 worry about that one.IF U kept the cooling system clean & 50/50 CORRECT TYPE anyi-freeze U wouldn't have welch(freeze) plug problems.

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