could I use let's say a nitrous switch instead, or does the Kick down switch a special switch in any ways?
Also, I've done a search on the subject but it didn't help me understand how it works...what stops the trany to downshift and make you fly throu the red line?

thanks

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85 Z28, 355, edelbrock base, SLP runners (old style) 58mmTB, ported plenum, stock cam, fuel reg, TES headers, flowmaster, 3.23's posi, rear disc, shift kit, MSD 6a, 305 hypertech chip (YUUUCK!) best prior intake mods: 14.6 @ 94, 2.02 60' temp: 78deg, 80% moist, on radials.
69SS, black, 3,73's, TH400, 402 BB, roller everything (solid 246@50 622 lift)+stud-guirdle, 67 Vette heads ported and o-ringed, about 10:1 cr KB pistons

 

No it's a quite ordinary switch. It used to mount in most cars on the gas pedal bracket inside the car; it just sent 12V from the ignition circuit to the kickdown solenoid, which is a fairly low-current device. It uses a vacuum modulator to control the shift points, so it directly looks at engine load; much more accurate than a stupid throttle position cable.

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"So many Mustangs, so little time..."
ICON Motorsports

 

now what about if you run a big cam with low vaccum...? I think I have an adjustable vacum module...but is it all I need?
So I can built in ANY kind of switch to activat the selenoid, don't need to spend 50$ for one in Summit right? just a 2$ switch mounted on the pedal or carb...or maybe shifter?

Thanks