i have a 280zx the head is off the motor.
When i put a pry bar on the crank it move foward and backward but doesnt turn the whole way. The pistons on the front and back barley move. Is this normal? Or is something wrong? car is a 5 spd by the way.

FRONT WINDOW (*) (O) (O) (O) (O) (*)FRONT OF CAR

*'S REPRESENT PISTONS THAT SEEM TO NOT MOVE AS MUCH.