How do you increase your engines performance?

you can increase your engine power and performance in a few ways. you can port and polish your heads, bigger exhaust ports, bigger fuel and air lines, bigger jets in the carby, run 2 distributers and get some head work done like shave a CM or 2 off it so it is closer to the spark plug, and you can try cold air intake, but i think you can only use it on a forced induction engine such as turbo or supercharger. you can increase engine response by a lighter flywheel and a 2 plated high pressure clutch, and adjust your timing.