The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > 47 - Current classic GM Trucks > The 1967 - 1972 Chevrolet & GMC Pickups Message Board

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 09-15-2024, 06:07 PM   #1
dmjlambert
Senior Member
 
dmjlambert's Avatar
 
Join Date: Apr 2016
Location: Cypress, TX
Posts: 3,764
1969 TH400 transmission kickdown setup

Hi folks,
I have a 1969 CST/10 with a 350 engine, Quadrajet, and TH400 transmission. The kickdown mounts on the Quadrajet back left stud and is pressed with the original press lever that mounts on the throttle assembly. When this was on the truck before engine overhaul, I didn't get a picture and the overhauler chucked the kickdown and said "you don't need that." When I drove the truck to the transmission shop and had them overhaul the transmission, I asked them about the kickdown, and they said "you don't need that." A few years went by and I connected a 12V source to a light switch, and the other terminal on the light switch to the transmission, and took it for a test drive. When I floored the gas pedal, I simultaneously flipped the light switch. I concluded "I need that." So, I bought the kickdown switch from a forum member and now I'm installing it. This is what it looks like when idle and when full throttle. Does this look like the correct setup and correct action on the switch?
Attached Images
    
dmjlambert is offline   Reply With Quote
Old 09-15-2024, 07:20 PM   #2
Steeveedee
Who Changed This?
 
Steeveedee's Avatar
 
Join Date: Jan 2013
Location: Simi Valley, CA
Posts: 10,469
Re: 1969 TH400 transmission kickdown setup

Here's mine, on my '70, but just the side view.
Attached Images
 
__________________
~Steven

'70 Chevy 3/4T Longhorn CST 402/400/3.56 Custom Camper

Simi Valley, CA
Steeveedee is offline   Reply With Quote
Old 09-15-2024, 07:28 PM   #3
dmjlambert
Senior Member
 
dmjlambert's Avatar
 
Join Date: Apr 2016
Location: Cypress, TX
Posts: 3,764
Re: 1969 TH400 transmission kickdown setup

OK it looks like on yours the half-round cut out on the presser foot straddles the bottom unused hole instead of like I have it straddling the accelerator rod hole. I will see if mine fits better that way. It seems like the presser foot should hit the switch in a more straight-on way. Your switch looks quite different.
dmjlambert is offline   Reply With Quote
Old Today, 02:55 PM   #4
damnyankee36
Senior Member
 
damnyankee36's Avatar
 
Join Date: Sep 2002
Location: Alamogordo, NM
Posts: 716
Re: 1969 TH400 transmission kickdown setup

Without looking at my build documentation photos, I believe the switch goes on top of the mounting bracket. That looks like it would solve your alignment issue if the actuator bracket was shaped different.

I am quite sure that's how I found it. Doesn't mean it's correct... I can't remember what that bracket looked like.

I'll look tonight.
__________________
1966 C10 Custom Cab Restomod (Sold)
1969 Camaro Z/28 (Keeper)

Current Build: 1968 C10 (Semi-Factory Restoration)
1983 Camaro Z/28 (Next in line, Keeper)
1951 3100 (2nd in line)

Last edited by damnyankee36; Today at 03:01 PM.
damnyankee36 is online now   Reply With Quote
Reply

Bookmarks

Tags
kickdown, th400


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 03:23 PM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright 1997-2022 67-72chevytrucks.com