The fluid catalytic cracking (FCC) behavior of compound types present in the >650degreesF resid from Merey crude was investigated. Distillation and liquid chromatography were used to separate selected compound-type fractions from the resid; the resulting fractions were then cracked using a benchscale FCC unit. The FCC behavior for each compound type was defined in terms of the resulting product distribution (yields of gas, gasoline, etc.); sulfur, nitrogen, nickel, and vanadium partitioning; and, in selected cases, gasoline composition. Results obtained from the Merey fractions were compared to those obtained from earlier FCC studies of compound types from Lagomedio (Venezuelan), Wilmington (Californian), Maya (Mexican), and Brass River (Nigerian) >650degreesF resids. Correlations using the five sets of data were developed for light gas, light cycle oil, and heavy cycle oil, as a function of five feed parameters (metals, microcarbon residue, sulfur, basic nitrogen, and hydrogen contents). The correlations are consistent with the data and have a standard error of 2 wt%.