The performance of jet fuel depends on the density (), condensed phase heat of formation (H-f degrees(c)), and specific impulse (I-SP). Exo-tricyclo[5.2.1.0(2,6)]decane (C10H16) or JP-10 is now used as a suitable synthetic liquid jet fuel because it has the approximated values of =1.1gcm(-3) and H-f degrees(c)=-123kJmol(-1) and a broad range between the melting and boiling points, i.e. T-bp-T-mp=196.2K. This work introduces a suitable pathway for calculation of the values of , H-f degrees(c), and I-SP of 13 well-known isomers of JP-10 and a series of saturated polycyclic hydrocarbons with general formula of CnHn (5n12) in order to specify high performance jet fuels. Although 13 compounds have larger values of I-SP* than JP-10, only two compounds, tetraspiro[2.0.0.0.2.1.1.1]undecane and tetracyclo[3.2.0.0(2,7).0(4,6)]heptane, are suitable as jet fuels.