You can adjust your TV cable one of two ways. From the throttle connection, there's a square shaped sleeve that the cable goes through. That sleeve goes through an adjuster that has a button on one side. Before you do anything, get some WhiteOut or a pencil or something and put a mark on the sleeve where it slides in.
Push the button in and slide the square shaped sleeve all the way in, then let go of the button. Get in the car and floor the pedal. The sleeve *should* pop out to the correct length.
If it doesn't pop out (it's probably very old, like mine), push the button and pull the slide out to where it was before. Now, try pushing the sleeve IN about 1/8". If it shifts like mud, move the sleeve back OUT a 1/8" beyond the mark. That should firm it up. Experiment until it shifts right. You'll always have the mark to refer to.
A SPACER is supposed to add volume to the intake and make it easier for the air/fuel mix to turn the corner in the shallow half of a dual-plane intake. If you had an older non-CCC SBC with a big cam and big port heads, a spacer was often used to fine tune the top end. Nothing happened on your car because the damn computer probably compensated for the thing! | 
