A counterbalanced decklid hinge assembly for rotatably supporting a decklid relative to a vehicle includes a torque rod extending between a first hinge box and a second hinge box. A support member is rotatably supported by each of the first and second hinge boxes. A linkage system interconnects one axial end of the torque rod to one of the support members. A lever is attached to and rotatable with the other axial end of the torque rod. A clamping block attaches the torque rod to one of the lever and the linkage system, and is configured to provide an infinite degree of rotational adjustment therebetween to infinitely adjust the pre-loaded torque rod.