Sol fraction and equilibrium photoelastic and dynamic mechanical behavior of epoxide networks based on bisphenol A diglycidyl ether (DGEBA) and poly(oxypropylene diamine) (Jeffamine(R) D-400) with four initial molar ratios of epoxy (E) and amine (A) groups, r(E) = [E](0)/(2[A](0)) = 1.2, 1.5, 2.0, and 2.3 were investigated. Networks with different extents of total epoxy group conversions (including etherification), alpha(E), were prepared for each r(E) value. Both the ratio r(E) and the conversion alpha(E) affected the value of the equilibrium modulus, G, and the weight fraction of the gel, w(g). As expected, decreasing the r(E) ratio (at constant alpha(E)) and increasing alpha(E) (at constant r(E)) were accompanied by an increase in the modulus, G, and gel fraction, w(g). The stress optical coefficient, C, is independent of alpha(E) decreasing with increasing r(E). The frequency-temperature superposition could be performed for all networks; the temperature dependence of the horizontal shift factor, a(To), satisfied the WLF equation. The temperature and time positions of viscoelastic functions predominantly depend on the overall concentration of elastically active network chains nu(e), regardless of the values of r(E) and alpha(E). While the shape of viscoelastic functions at the beginning of the main transition region depended on the detailed structure of the chain (number and length of pendant chains), the shape at the end of the transition was determined mainly by the concentration of elastically active network chains. An unexpected universal increase was found in the half-width of the maximum in the dependence of the superimposed loss compliance, J(p)", on reduced frequency omega a(T) with increasing crosslinking density.