Hello again.
Is there any chance the main bolts were replaced by a former owner at some time in the past.I have taken apart more early Chevy six engines than I care to remember in the last 35 years.The only time I saw a damaged or broken main bearing cap bolt was when the engine had broken a crankshaft.I would compare the bolts to someone elses for heck of it.Goodluck on your motor,
EvilDr235
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Two types of people drive old cars.Rich people because they want to and poor people because they have to.
Remember EvilDr235 has a cure for Your sixness.
