OK i have an 81 Datsun 4x4, that i put a sbc in. anyway do to fitmit issues so i used block hugger headers. Any who after the engine runs a few minutes the starter drags like the batter is dead or low. I got the new style gm starter. I ran new wires and grands every were. to no avail. now it only has to set a few minuets and its happy again. I put an IR thermometer on it. the solenoid is hitting 250.