4 Spd. to TH400 (what about kickdown operation)

[Scott A]

The previous owner installed the TH400. I noticed there is no wire that should be hooked up to the kick down connector on the driver’s side of the transmission. Don't I need to get the gas pedal kick down mechanism from an original TH400 truck, and then wire it to the transmission?

UPDATE: I went to the junkyard and found the switch and all the wiring out of a 79 Suburban with a TH400. It bolted right in, one wire to the fusebox the other to the transmission and I am all done. /forums/images/graemlins/cool.gif

 

[cybrfire]

Put it on a button on the steering wheel. Just needs 12v and when you want to pass push and hold the button.

 

[lason]

Yup, just 12v to engage passign gear but I would get a switch for the gas pedal. Having to remember to hit the button on the wheel would be a PITA in my opinion. Your other option is this kit by B&M......
http://store.summitracing.com/partdetail.asp?part=BMM%2D20297

 

[Scott A]

I think I will just look at the Junk Yard for a factory TH400 kickdown pedal. I guess any 73 and up, Suburban, Truck or Blazer will do, that originaly came with a TH400. Should I grab the whole pedal? or is this a separate electrical part that attaches to my exsisting pedal or firewall??

 

[84gmcjimmy]

What does this kickdown thing do? /forums/images/graemlins/confused.gif

 

[MTBLAZER89]

I have a 400 equpped truck that is going to scrap where is the switch at?

 

[dyeager535]

Bolts to the pedal assembly or floor somehow...can't recall how, but when I pulled one some time back, I didn't grab the pedal, so I don't THINK it was a special pedal assembly.

Works pretty much like the brake light switches as I recall. Very simple at least.

 

[Scott A]

The switch is down by the gas pedal.

What does it do:
(It kicks the transmission into 2nd gear with you step on the gas all the way.)

 

[84gmcjimmy]

oooh okay. Thanks /forums/images/graemlins/thumb.gif
Sorry for the hi-jack /forums/images/graemlins/doah.gif

 

[mrk5]

Here's a pic of a factory setup. Electrical connection on the left. To the right is the slide switch. As you depress the pedal the rod above the pivot point at the bottom of the picture comes toward you and contacts that brownish peg poking out to the right. The switch is just bolted to the pedal brace there. Should just need the switch and I'd guess it will bolt right in.