For the sake of discussion , let's say that we have 2 different non-lockup torque converters, both of which brake stall at 3000 RPM behind your nice 292. Inside the converter there are several different ways to get from a stock stall range to the 3000RPM that we are talking about. One way is to reduce the diameter say from 12 inches to 10 inches. Assuming that both converters are the same diameter, they can still be quite different. Stator fin angle and number of fins, pump and impeller fin angle and number of fins, distance between pump and impeller.are just some of the things that I know of. From my limited knowledge, cheap converters have just a few mods inside to make it "slip" more while a good, well made converter has much more work done to the inside to minimize slippage in normal driving, yet give higher stall speed than stock. With a lock-up trans this becomes less important as the converter locks up when you get up to speed. I hope this helps, I am still learning. Jay6155