Super Six install on 1974 Dart

OK, I understand the plastic rocker arms on the accelerator linkage have some wiggle room so that the stepup piston (and metering rods) can move up and down a bit at any throttle position.

I took out the stepup piston assembly and I saw that the gap that is adjusted by the screw on top was zero. It took several clockwise turns to open up a gap to 0.030". Now the AFR is about 13-14 at part to full throttle.

Not surprisingly, the idle is still too rich. Idle RPM is high even with the screw backed off completely and the mixture screws all the way in.

On another topic, I installed the 18" throttle cable and it fits pretty nicely.