Reusing head bolts

unless they're Torque-To-Yield ( aluminum heads and Diesel heads typically ) , you're probably okay .

Like anything , they fatigue with time , use and heat/cool cycles .

I reused the head bolts on my 1972 Coronet's stock318 ( replaced the blown head gaskets ) ; I also reused the rocker shafts' bolts . 2 years and 22,000 miles later , I've had no problems .