  We calculate, in the context of a 3-3-1 model with heavy charged leptons,
constraints on some parameters of the extra particles in the model by imposing
that their contributions to both the electron and muon $(g-2)$ factors are in
agreement with experimental data up to 1$\sigma$-3$\sigma$. In order to obtain
realistic results we use some of the possible solutions of the left- and right-
unitary matrices that diagonalize the lepton mass matrices, giving the observed
lepton masses and at the same time allowing to accommodate the
Pontecorvo-Maki-Nakagawa-Sakata (PMNS) mixing matrix. We show that, at least up
to 1-loop order, in the particular range of the space parameter that we have
explored, it is not possible to fit the observed electron and muon $(g-2)$
factors at the same time unless one of the extra leptons has a mass of the
order of 20-40 GeVs and the energy scale of the 331 symmetry to be of around
60-80 TeVs.
