Originally posted by Freshmeat
And the instances I've seen with snapped head bolts were a 1986 Towncar and I believe a 1990 Mark VII. Pre-TTY bolts. That said, I'm using old bolts in my motor and its OK. I guess it depends on what happens. If the motor is overheated or otherwise majorly stressed I guess the bolts take a beating and can break. Its probably not the most common thing so I guess you're ok.
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