Cams, pistons and headers. For a naturally asperated car you need to get a lot of air in, squeeze it a lot and get it out fast. Without doing that stuff, you can advance the timing till just before it starts pinging. You can either advance or retard the cam timing for either low or high end power. Make sure that valve clearances are right. If it misses of course check the electrical parts. Not much else. You might find a higher numerically gear rear end for quicker starts off the line, but top speed suffers.
Turbo charge it. It seems to be the best. Mine is a N/A and if I shift between 4 and 6 thousand rpms, those are my quickest times. You can feel the cams coming in around there.
Russ
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