Engine turns over slow
 

Like the title says. The dealer checked the battery and said it cked fine but admitted that it turned over kinda slow. Should I be worried? I bought the 2ss/rs used w/4k miles on it. Anybody else have this problem or is it normal?
I have had a ls1,ls2,ls7 and none of these turned over slow.

You can pass by to a trusted auto parts store and have them load test the battery. Alternatively, if you have a amp clamp you can test the amp load between your starter and another. If there is issue with either the field or armature windings, it will show up as a increase or decrease in current(amps). The result of the test will determine if the issue is a short or break with the windings/brushes.

Thanks,
I will try it today.