72 fitment aluminum radiator into a 1974?

3. a 3 row aluminum radiator is worse than a big two row radiator. If you have a stock sb v8, that 3 row aluminum will probably do the job fine. however, for others reading, the 3 row aluminum is a very inefficient design and in a lot of cases is not adequate to cool built up motors and BB applications.

Really with this again?

A 3 row radiator is not a "very inefficient design". This is a myth perpetuated by people that do not understand thermodynamics. Can a well designed 2 row radiator cool better than a poorly designed 3 row radiator? Sure. But you know what? A well designed 3 row radiator can cool better than a poorly designed 2 row radiator. And having big tubes does not necessarily mean you have a well designed radiator. That's just as much of a sales gimmick as saying 3 or 4 row radiators are better.

Radiator design and efficiency is complex. There are a lot of variables, and the number of rows is only one and it's not the most important one either. Lets list some of the variables at work- the surface area of the core; the size, shape, surface area, and spacing of the tubes; the material of the radiator, the volume of coolant in the system, the pressure of the coolant in the system, the volume and speed of air flow through the core, and of course the ambient temperature of the air and the temperature of the coolant. That's just the big stuff, but all of those things determine the cooling ability and efficiency of a radiator.

What works best in one application may not work best in another, it really depends on the application.

So, do me a favor. Either work through all of the thermodynamic equations that prove what you're saying is true and post them up here, or stop making those claims. I'll even do you a solid and just let you work through the math for 2 and 3 row radiators that will fit into an A-body, because I know for a fact you can't prove what you're saying is true for all applications (there's a reason why 3 and 4 row radiators exist). You're a vendor, so I would think that you'd be able to get ahold of all the specs you'd need to do a full thermodynamic analysis.