Post-Newtonian parameters of ghost-free parity-violating gravities

We investigate the slow-motion and weak-field approximation of general ghost-free parity-violating (PV) theory gravity in parametrized post-Newtonian (PPN) framework derive perturbative field equations, which are modified by PV terms this theory. The complete PPN parameters obtained solving equations. find that all exactly same as those relativity, except for an extra parameter $\kappa$, is caused new curl-type term gravitomagnetic sector metric calculate precession effects gyroscopes constrain model observations Gravity Probe B experiment.