Alright here is the deal. Every since I put the new motor in my chevelle I have had nothing but hell with the starting system. I have gone through 5 starters and 2 flexplates trying to get this bullshit fixed and I am still having trouble. When you go to crank it, it sounds like the battery is low, even if you have the jumper cables hooked up to a running car, and the starter sounds like shit, real loud starter sound (Sounds like it needs shims) I have gone no shims, 3 shims, 2 shims, Still does it. I once put in one shim, it sounded just like a chevy should, and then I had to take off the starter to get to something and put it back like I took it off and it went back to sounding like shit even with that exact shim! I was thinking it is a ground problem?? I have 2 grounds off of the negative side of the battery, one smaller gauge going to the core support, and the other main ground going to the alternator bracket. If any one has any suggestions other than put a ford or any other motor in it I would appreciate it!