Dunno what they were called, but
these in question were totally mechanical units very much like the diesel- less pressure i'm sure. Moving the rack changed the displacement of the pump-therefore the amount of fuel per shot. one pump piston per car cylinder- it can be timed just like ignition, it was in use just before the electro systems came into being. At the time Dustin Hoffman's Alfa and a few other foreigns had similar mechanical systems. Expensive to produce compared to the 'vette Ram-Jet which was a constant "drolling" system but which proved that the timed squirt was not worth the expense of a diesel type pump.
