Reply To: stripped cyl head bolt top right side on a 4hp 1973

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December 21, 2021 at 5:15 pm #251524
frankr
Participant

    To answer the question, you can install two of them back to back, just leave a bit of space between them so you can break off the tang of the outer one. BUT there is absolutely no reason for putting in two of them. One 3/8″ long one is more than adequate for a 1/4-20 bolt. In fact, a 1/4″ long is plenty. Screw it down to about 1/2 thread below the gasket surface.