400 hp 5.2l vs 5.9l Magnums
We are comparing two performances engines so the best way to do that some kind of performance contest aka a drag race 1/4 or 1/8 or maybe zero to 60 mph or to 100 mph or maybe some back road drag spot maybe even a road course. Lets say a 1/4 mile drag race so two identical cars each running one of these engine and run the gear gives the fastest time for each. The 318 gear will obviously be deeper how much deeper I don't know but bet it will be around the cid and torque difference. This ain't rocket science. So why can't you run more gear in the 360 cause there's a point where it doesn't help increase and starts to hurt performance. Can't make it any clearer.