Just throwing this out there havent had time to dive into the problem yet but my car is cranking over very slowly, I originally thought it was a battery issue but I put a new one in and still same problem I thought maybe bad connection but I clean and tightened all connections to the battery and the starter, does this sound like maybe a bad battery cable or is it simply the starter going bad. If I hook up a charger and crank up the volts the car fires right up but only then.
What's the ignition timing set at?
Check your grounds. Battery ground to engine. Ground engine to frame. I don't know if you have rubber mounts (motor) but they don't help at all when it comes to completing wiring circuits. lol
Thanks problem was a bad starter