[PGSigns]

Low power to the starter will kill parts all day long. You need good grounds on the motor and lots of time all new paint really limits the ground. Clean all the paint from were your grounds hook up and use star washers on all the connections. I ground the battery right to the head. Then ground the motor to the frame and another ground from the battery to the core support. I also like to run the starter solenoid off a relay. I run a #10 wire off the starter lug to the relay and a #10 back to the solenoid. The trigger the solenoid with the little wire that chevy uses for the starter. This cures the issue of not enough current to get the bendix to fully engage and hold while starting the engine. Stared to do this with the race cars in the 80's and have done it on a lot of other stuff to cure just what yous is doing.
Jimmy