Can somebody please explain to me what a stall converter does and if its good for an everyday driver

 

Stall converters will begin to engage the transmission at higher engine RPM until they begin to turn the transmission giving you a direct drive when it stalls, so it gives you a better power boost and better/faster launch. Like reeving the engine high and letting go on the clutch quicker.

Good for race applications, not really for daily driving cause your engine will be running faster.

 

Like that other canadian said, and you only would need one if you were running a much more aggresive camshaft and had lost low end torque or idle quality, and had issues with engine stalling at low rpm. In most situations in 4 wheeling it will make your truck harder to control, and cause it to dig holes. Great mod for mud bogging though.
Lock up converters in a driver are fine, the lock up in high gear is the same, and some better non lockup converters are pretty tight at crusing speeds, cheaper ones feel like they are slipping all the time.

 

Thanx guys I was going to buy a 28-3000 stall converter for my bronco but I never see mud in az and I dont need so waste more gas daily