adjusting a turbo 400 kickdown switch?

[mafosa]

hey fellas, when I got this truck last year. it didn't have a KD switch.

didn't notice it missing till last week. im installing it right now. my question is.

should I adjust it to kickdown before or after the secondary's kick in on my holley?

I ran out of time today. tomorrow ill 'pick back up', at it.

by the way. I wasn't comfortable about a 12v source sitting right below n down wind of my carb. so I used my old throttle cable and relocated it to a safer area.

any help I sure would appreciate!

larry

[mafosa]

im installing a KD switch. relocated on the drivers side via throttle cable.

im not sure if its suppose to kick down before or after my secondary's kick in on my holley?

any help sure would be appreciated

larry

[mafosa]

not really done with the install yet. just getting a rough idea if this will work.

[mafosa]

last pic.

[geezer#99]

Elaborate set up.
Have it kick in when your primary is wide open since you have a vac secondary carb.

[mafosa]

oh damn! I thought this thread got washed out to cyber sea. it showed, "can not display" era message. lol!

[mafosa]

oh ok. thanks for the speedy response geezer#99 I never delt with a KD mechanism before.

later if it works good. ill relocate it inside the cab. kinda a eye sore there.

hopefully ill get this in only one tank of gas tomarrow. lol!

larry

[ImpalaJim]

never knew a 400 had a kick down ??

[mafosa]

lol! either did I.

[geezer#99]

Originally Posted by ImpalaJim

never knew a 400 had a kick down ??

They're electronic. A switch on the tranny activated normally by a lever on the gas pedal.

[mafosa]

ok. so.. I got it all done. drives much better now. passes with some authority.

although, I did notice my carb wasn't opening all the way at WOT.

project for another day I suppose. lol!

thanks for the help.

larry

[geezer#99]

Originally Posted by mafosa

ok. so.. I got it all done. drives much better now. passes with some authority.

although, I did notice my carb wasn't opening all the way at WOT.

project for another day I suppose. lol!

thanks for the help.

larry

No project needed. If you're just stroking the throttle the secondaries might not move at all. THey open initially a tiny bit with the drop in vacuum but then rely on air flow thru the carb to get them to open all the way. The spring inside controls how soon they start to open.

[mafosa]

I was looking inside the primarys side. I released the return spring. I put some weight on the peddle.

I looked inside the carb only at the front butterflys. I have a rod style linkage.
not sure what adjustment can even be made to fix that.

maybe redrilling a little higher and further away on the carb braket to change the geometry. dony know. weekends over for now.

[geezer#99]

I see what you mean.
Higher would work.
Or unclip the rod at the firewall bracket and screw the rod into the coupler.