Torque Specifications

Here are the torque specifications for your 65/66 car. At the bottom is the general guide for bolts of various sizes. One should always proceed with caution when dealing with 40+ year old components. This will not be their first rodeo. You have decades worth of metal fatigue due to wide variations in temperature, along with the simple march of time, slightly distorted threads from previous repairs, slightly looser threads from the metal loss due to rust, etc.. to contend with. And, metalurgy in the 60s wasn't anything close to what it is today. There was a much greater degree of variation in the strength and consistency of the seemingly identical components. By now, each and every component has it's own distinctly unique set of characteristics. You will need to be much more cautious and pay a lot more attention to what you're doing than you would if you were just slapping together brand new stuff.