Grounded starter, car wont start

[all stock]

I've recently done a 5 speed swap but I grounded the starer. After the swap was done, the car doesn't want to crank. The relay clicks but the engine doesn't turn. However, if I ground the starter, the starter spins freely and doesn't engage anything. Any idea as to what the problem could be?

[andrewmp6]

sounds like you got the wrong starter on it or you need to shim it