Thirty inbred lines were crossed with each of three testers in a line × tester design during kharif 2012 and are evaluate for combining ability and heterosis to identify promising hybrids of maize observations were recorded viz., days to 50 per cent tasseling, days to 50 per cent silking, days to75 per cent dry husk, ear length, ear girth, number of kernels row per ear, number of kernel per row, hundred seed weight, shelling percentage and grain yield per hectare. The resulting 90 F1's along with three checks and the parents were evaluated during kharif 2013. Analysis of variance revealed highly significant differences among the genotypes. Crosses excelled their perspective parents in performance for most of the traits studied. DMIL103 among the parental lines and DMIL011 among the testers were identified as the best general combiner for grain yield. Whereas among the hybrids, DMIL703 x DMIL031 and DMIL688 x DMIL011 was identified as a potential cross combination for grain yield while the cross DMIL639 x DMIL011recorded highest magnitude of economic heterosis of 21.44 percentages over the best standard check (Super 900M). So the crosses DMIL703 x DMIL031, DMIL688 x DMIL011 and DMIL639 x DMIL011 can be utilized for developing high yielding hybrid for exploiting hybrid vigor.