You might have to do a volt drop test on the car , what you have to do it start it up and run for a few minutes and then turn the lights on , all of them ,put the fan motor on low or med, take a volt meter and check what voltage between the alternater and battery, if you have more than a volt you have bad wires , over the years they get hard and the resistance goes up, also check engine to the negative post on the battery , that will give you fits, I put two ground straps on mine , and last is see what is stamped on the alternator , I do remember some were stamped 42 amps or less 😳, I have one off of my parts car and it was a 60 AMP, (see photo) , I have a larger one on my V6 pinto , it's a 100AMP , and last on your cam is if you have to remove it you have to remove the head 😩, yep the cam is removed from the back , so if you have a non A/C car you can remove the radio and use a hole saw on the fire wall to remove the cam, but remove one the the rocker arms and look at it , if it is smooth across the face just install it back and adjust the valves and keep on going , get a zinc oil additive, most oils do not have them because most engines have roller cams instead of the old slider cams , hope this helps