Ok I'm trying to figure out what some crap is under the hood. First the transmission downshift switch where there are two wires that plug into it and it's on the drivers side right next to the carb and throttle linkage. How is that supposed to work? Is it supposed to be attached to the carburetor or something. I'd take a picture, but I don't have a camera. It seems to not be touching anything and just dangling there. Looks broken. How should I fix it and where should it hook up to?
Well.... I'd get a pic, but the covers on the car with snow on top of that. It should be on the same bracket as the dashpot, and held on with two screws.
__________________ David Smedley
1968 Cadillac Sedan Deville, 81k Original Miles!
1987 BMW 325iC, 240k
1994 Chevy G20, 152k
I removed the downshift switch a while ago, as it was not working. It did connect to the throttle linkage at the driver side of the Q-Jet. One of the cables goes down to the transmission and connects via a single wire to a connector on the driver side of the transmission. I dont know what the other wire is, I believe its a +12V cable.
Lokar makes a kit that you can use instead of the switch and it is adjustable, so you can select the point at which it downshifts the transmission: http://www.lokar.com/products.html
Thanks a lot for the help. I'll look into it most likely. Does the product have a special name or number?
I believe it is the KD-2400HT (TH-400 Electric Kickdown Kit) and to mount it to the carb, I tried using this: SRK-4000, but the problem is that it does not attach to a Q-Jet to well ( I had to grind of some of it to make it fit, but that might be because of the 2" spacer I use ).
Summitracing Part Numbers are: LOK-KD2400HT and LOK-SRK-4000. Problem is that they are a bit pricey, but work as intended. I did try to find a new switch, just as the one that was on the Q-Jet, but was not able to find one (Must be because we neither have Autozone, nor Parts America, nor any other decent car parts store over here....)
I believe it is the KD-2400HT (TH-400 Electric Kickdown Kit) and to mount it to the carb, I tried using this: SRK-4000, but the problem is that it does not attach to a Q-Jet to well ( I had to grind of some of it to make it fit, but that might be because of the 2" spacer I use ).
Summitracing Part Numbers are: LOK-KD2400HT and LOK-SRK-4000. Problem is that they are a bit pricey, but work as intended. I did try to find a new switch, just as the one that was on the Q-Jet, but was not able to find one (Must be because we neither have Autozone, nor Parts America, nor any other decent car parts store over here....)
Happy new Year! Andreas
I don't have the original Q-Jet anymore, I put on an Edelbrock 750. Will this still be able to fit or should i try something else?
I don't have the original Q-Jet anymore, I put on an Edelbrock 750. Will this still be able to fit or should i try something else?
The kickdown switch, I believe, is universal. It connect via a throttle cable to the carb and the further you press on the throttle, the further it pulls out the cable from the kickdown switch (which you can put on the transmission pan or anywhere else you want) and finally activates the kickdown.
If you want to wait until tomorrow, I will go out to the garage and make a few pictures so you can see how it connects. I drove the car today and the kickdown works very well - the good thing is, I can adjust it very easily to either shiftdown very early or very late - or not at all.
Any sort of encased "micro-switch" will work on the tranny kickdown. We've used one that operates elevator doors on a 350 chevy swapped into an '85 Jaguar with the TH 400 dropped in.It worked perfectly...The only question that arises is where to mount it so the linkage trips the switch at how much throttle you want it to.
Re: Transmission downshift switch 
Re: Transmission downshift switch 
