Here it is!
Long time ago when I got bought a supersix setup including cast iron 2 bbl manifold and Carter BBD from a donor car I dint pick up the kickdown linkage. As it was Aspen it probably wont fit to my early A-body either.
So I had manifold installed and carburetor tuned, engine was at drive condition but I havent a kick down system. I had to build one!
I went to closest hardware store. I picked up a 8/10mm aluminum tube, couple of expanding wall plugs with M6 threads and couple of brass rings with 10 mm hole. Those are used at waterline copper tube joints. I also bought M6 threaded rod and 2 ball ends. Then I collected the system presented in the picture.
The left end in the part is for carburetor. Right end with bent rod is to A904 link. At first I screwed the bottom end to the 904 link. Next I measured the max movement from idle end of the 904 link to the "kickdown" position. Then I drilled to carburetor a hole (with some calculations and tests) which made similar but slightly less move from idle to WOT. You can see I have 10cm treaded area for adjustment. I used it so that when carbutetor is at WOT the 904 link touches to end.
I was ready from beginning.
Does it last long?
Yes it does. I built this system at 1999 and it is still in use. Now I have fuel injection but the throttle body shaft is at the same point as was the Carter was before.
This was and is my solution for kickdown of SUPER SIX.
