By using photofragment velocity imaging detection coupled with a (2 + 1) resonance-enhanced multiphoton ionization technique, the elimination channel of spin-orbit chlorine atoms in photodissociation of cis-, trans-, and 1,1-dichloroethylene at two photolysis wavelengths of 214.5 and 235 nm is investigated. Translational energy and angular distributions of Cl(P-2(J)) fragmentation are acquired. The Cl(P-2(J)) fragments are produced by two competing channels. The fast dissociation component with higher translational energy is characterized by a Gaussian distribution, resulting from a curve crossing of the initially excited (pi, pi*) state to nearby repulsive (pi, sigma*) and/or (n, sigma*). In contrast, the slow component with a lower translational energy is characterized by a Boltzmann distribution, which dissociates on the vibrationally hot ground state relaxed from the (pi, pi*) state via internal conversion. cis-C2H2Cl2 is found to have a larger branching of Boltzmann component than the other two isomers, The fraction of available energy partitioning into translation increases along the trend of cis- < trans- < 1,1-C2H2Cl2. This trend may be fitted by a rigid radical model and interpreted by means of a torque generated during the C-Cl bond cleavage. The anisotropy parameters are determined, and the transition dipole moments are expected to be essentially along the C=C bond axis. The results are also predicted theoretically. The relative quantum yields of Cl(P-2(J)) have a similar value for the three isomers at the two photolysis wavelengths.