kick down linkage

ecoronado3 said

So the kick down has never been hooked up on my dart and I have no properway of doing so as of now due to the upgrades on intake and headers. How important is it and what functions (other than dropping to first when you give it all the gas) does it serve?

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The kickdown linkage provides the input to your transmission, as to throttle position, thus controlling internal fluid pressure in your transmission.

Without a kickdown, your tranny will be toast in a short period of time.

Either install an aftermarket kickdown system, or adapt factory kickdown linkage, to properly set the transmission shift points as controlled by internal fluid pressure.