You can walk around the pits and watch the crews doing a partial strip down of the engine for each run, although it's fundamentally basic V8 pushrod technology, it's far more than that.
There is a video [1] with a few slow motion clips of the preparation and running of a Top Fuel car. One poster mentioned a cameraman who stood between two cars, you can clearly see why that wasn't a good idea!!
Looking at how the tyres deform, not just at launch 2:00 but also at 2:50 it looks like they are a real limitation in acceleration. To help them off the line the launch area is really sticky, shoes melt into the 'tarmac'.
The 0-60 time, as with many really fast cars, doesn't tell the whole story of using their 10,000BHP to get to about 330MPH in about 4.5 seconds.
It's something I think you really need to go and see.