[en] The influence of interlayer hoppings on the superconducting transition temperature (T_c) in bilayer cuprates has been studied. The parameter of hopping between layers is expressed as t_⊥(k) = t_⊥(cos(k_x) − cos(k_y))² and treated as a small perturbation for the states of two CuO₂ planes described by the t-t′-t″-J* model. In the generalized mean field approximation for d_x² - y² symmetry of the superconducting gap, neither the interlayer hopping or exchange interaction, nor the pair hopping between CuO₂ layers provides an additional mechanism of Cooper pair formation or an increase in T_c. In the concentration dependence of T_c, the bilayer splitting of the upper Hubbard band of quasi-holes is manifested as two peaks with temperatures slightly lower than the maximum T_c for a single-layer cuprate. Interlayer antiferromagnetic spin correlations suppress bilayer splitting.