Looked through the Ulrich & Fisher book but they don't mention the 30-80Mph anywhere.

But in the chapter "Performance Tuning" there is a paragraph titled "Tuning in the vehicle".
It starts with that you need a place that you can always use.
Also need a vacuum gauge and a stopwatch.
Start the watch as you accelerate past a certain rpm point, stop the watch when you reach the rpm where you want to be at the top end. Use the highest gear.

Is that about the same as in your version?
Which one have you got by the way?
This one:
http://www.amazon.com/Holly-Carburetor-Handbook-4150-Hp473/dp/0895860473/ref=pd_sim_b_2
Or this one:
http://www.amazon.com/Holley-Carburetors-Manifolds-Mike-Ulrich/dp/B001263G70
Or perhaps this one:
http://www.amazon.com/dp/0895864339/ref=rdr_ext_sb_pi_hist_3