Kickdown bar/adjust for aftermaket holley

[Omie01]

I am at the point of hooking up throttle and kickdown. I have a Holley 750 w/ ford kickdown and Holley's little kickdown extension bracket. Does anybody know when everything is adjusted right? The kickdown bar with the extension on there seems to be sitting in place right, but it seems as though the throttle plate contacts too quickly, like at 1/4 throttle. I know there is a bit of travel on the kickdown bar. Does the tranny kickdown right at the end of the kickdown bar travel? Or somewhere in the middle?

 

[72HCODE]

Well the kickdown is designed to kick down the transmission 1 gear for passing, originally it is called the passing gear kickdown. so you want it to come on when your at or near WOT(wide open throttle/stomp on the pedal) you can adjust it with the little hex head on the linkage and make it kick down a gear where you feel most comfortable. I have mine kick down at about 95% pedal travel so right before i bury the pedal into the carpet.

again the point of the kick down is when your driving on the highway at 55-75mph and you want to pass another car, so you floor it the trans kicks down 1 gear giving you more acceleration. now there are overrides to the kickdown, you have the mechanical gear change inside the transmission and to some extend the transmission modulator which is a vacuum powered override that senses engine loading based on vacuum. so when your doing flatout with the pedal buried in the carpet the trans stays in 3rd, not that really happens on public roads.

best testing is driving the car and playing with the adjustment bolt to get it where you want it.

you can also play with the modulator and adjust shift points outside of the mechanical gear changer.

 

[Totalled]

It also boosts line pressure in the trans.

 

[mrmach1]

and makes the gas gage move.