ford-racer46.... What is it exactly that you want from your motor? One minute you want turbo or forced induction, next minute you want the lot with the lot but in an NA setup (read here: ford-4l-and-6-cylinder-f1/re-build-for-supercharging-t91337.html). Do you actually want a motor or do you just want friends?

Have you got any mates with turbo, supercharged or NA setups? Ask em to take you for a spin so you can get a sample, then take your pick and stick with it. And remember to set realistic goals.

Anyway back on topic.

Torque converters are the Automatic transmission equivalent to a centrifugal clutch. Stall speed is the max speed that the motor is allowed to turn whilst the car is held stationary. And that does not mean holding it with a foot brake, as a well setup converter will easily overcome the foot-brake at or near stall speed. Only way to truly stall a car up is with a trans-brake (especially if its turbo). And before you put a trans-brake n your wish-list just hold that thought for a few moments as Adelaide doesn't have any drag strips (the only place a trans-brake will be of any use).

Again, back on topic.. again.
When you are travelling at a low speed (under 25km/h) and you take your foot off the accelerator and then smash it again. The rpm that the engine revs to before you feel the car start to pull is the flash stall speed. This is a better indication for selecting a converter on a non trans-brake equipped car. If the flash stall matches the peak torque rpm of the engine then the car will be a rather potent street weapon.

As for cam's. You can have a cam that is lumpy everywhere in the rev range (and utterly useless for anything apart from its intended design purpose). Its called a pro stock cam

Being a fixed geometry item, camshafts are compromise items. You can't have your cake and eat it too. Lumpy basically means gutless down low and powerful up high. The lumpier the cam, the more gutless it is down low whilst it pulls harder up top. But its more involved than that. Read phillyc's post a few more times and get the books he mentioned. Its the only way way you are going to learn how engines work. Pimply faced keyboard warriors only know so much before their knowledge plateau's and they pump you full of the crap that you want to hear.