Was outside "weatherproofing" the property in preparation for the coming storm, thought - "Maybe I'll see if that engine will free up." I grabbed a four foot long pry bar, and it didn't even budge.
Any suggestions? Bing searches say marvel mystery oil or pb blaster. I may buy a quart of whichever one I can find and pour it in. I'm not ready to give up yet.
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1972 SS 454 Chevelle LS5/M21/12 bolt 3.73 posi
1969 Malibu COPO L72/M20/12 bolt 3.31 posi
1968 Malibu LQ9/4L80E/12 bolt 3.73 posi
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