So what makes a chassis run quick?
What do you do to improve it and what's the best simple advice to get better 1/4 times.
Mine.. Leaf spring clamps
Chassis ties
Pinion snubber
Roll cage
Wound down front wishbones
Kyb front shocks, air rear
I am wanting better rear shocks, but what I don't yet know.
I want to improve on all this.
What is the rest of the combo? Tires? Engine/transmission/gear? Matching the components to the application is the first priority. Converter, timing, carb settings, blah blah blah.
To answer your question in terms of what you have - clamping the front section of the springs and the snubber are old school ideas but they work OK. Can't really do much else with regular leaf springs except maybe adding a leaf on the right to help keep the left side from unloading on the hit. Caltracs are the next step up if you want to stay with a leaf spring style suspension.
Definitely get rid of the air shocks, they are probably doing more harm than good. Also, the KYBs are probably not helping in the front either because they are really not biased correctly for drag racing. You want the front of the car to rise quickly, to a point. KYBs are more of a handling shock and will try to keep the front end planted.
Generally you want 5" of front end travel in the front before the tires lift off the ground. You can check that in your garage with a floor jack under the k frame. The KYBs likely won't allow that much travel and would probably be slower to react than a 90/10 shock. If you want inexpensive, try some 'drag' type shocks - 90/10 in the front and perhaps some kind of adjustable in the rear. Even old worn out shocks in the front would probably be better than the KYBs.
A drag only car usually can benefit from 6 cylinder torsion bars since they react quicker than a larger diameter bar.
Removing unsprung weight always helps to make a car react quicker and getting the weight distribution right is a good idea too, like moving the battery to the trunk over the right rear tire. You can take these two ideas pretty far.
There's also the basics - check your pinion angle and make sure it's not causing windup. Set your ride height, then align the car. You want a little rake but no so much that the *** end of the car is up high. Make sure the rear is square too.
There's also tire pressure, launch rpm and on and on.