How do you know your doing any good without a flow bench?
At any drag strip!How do you know your doing any good without a flow bench?
How do you know your doing any good without a flow bench?
As far as the long turn and port matching is concerned doing things that make common sense will make improvement,your point that without a flowbench you can't quantify it is valid but doesn't mean its not there.Now when you start messing with the short turn without knowing what your doing or excessively opening the throat below the seat you may start going backwards.Some of the most preeminent engine builders in the country (Jon Kaase off the top of my head)will tell you that quality and not quantity of airflow more significantly correlates to power production and flow benches don't give you that information.So if the car slows down you throw them in the trash and start over.
Your right that is the best feature of the 333's it has the same capabilities as the best of the small port cast iron heads,and is much more available thus lowering price.Also the high price of the large port cast iron heads put them in the unusual situation of with the availability of the aftermarket heads unless you doing a restoration they're not worth spending the money to rebuild them.That's the best feature of 333s. Most of them are free or very cheap.
Now I'll get some blowback!
Aluminum heads are cheaper to produce than cast iron so if Bob or anyone else decided to make a budget head it wouldn't be iron.