I will have to look up the tread pattern that I need for alternator on one side and thermostat housing bolt on other.
You just need to know the diameter of the bolts that will go thru the eye on the heim joints. Since nearly every bolt on a Chevy takes a 9/16" wrench, that would make them 3/8" diameter. The threads on the heim joint shaft need to match the turnbuckle body.
