One argument I have heard is about tech inspections. Some body engine combinations require you to remove the engine or component body parts to remove a particular head or either head. The argument was that decisions of which head to remove would be a source of conflict (for example, big bocks in early Camaros and Novas) because of the extra effort imposed by the studs. Imagine four racers with the same engine type-body type in tech. Three get to pull the easy head, you have to pull the hard head. There are some people that would use such a situation to sue NHRA for discrimination.
If NHRA does not consider it to be out of the question to pull a piston and rod, what's the big deal about doing a little extra work to pull a head?
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