We have calculated 87 fine-structure energy levels of K7+ and Ti10+ belonging to the lowest 14 configurations within the n=3 and n=4 complexes using Program CIV3 of Hibbert. Relativistic effects are included through the Breit-Pauli approximation. New improved results of oscillator strengths, transition probabilities and line strengths for all allowed and intercombination transitions among these fine-structure levels are calculated using large-scale configuration interaction wavefunctions. Lifetimes of some relatively longer-lived levels are also computed. Our results are compared with a wide variety of other calculations and available experimental data. It is noted that most of our results compare more favourably with the measurements than the other available theoretical results. Tables \ref{tab6} and 7 are only available in electronic form at http://www.edpsciences.org