Does anyone have access to an unrestored '64 7375R fuel injection unit? I want to know details about the color of some small fittings.
From 1963 through 1965 GM installed some FI tubing fittings as bare brass, cad plated, or chemically blackened. To know the most likely color combination for any particular unit, you have to study an unaltered example around the same unit serial number. For example, I know from GM photos that the 45 degree elbow connecting the PCV valve to the 7375 plenum was initially bare brass. Then during most of the '63 model year it was blackened. Near the end of '63 production it went back to bare brass.
From 1963 through 1965 GM installed some FI tubing fittings as bare brass, cad plated, or chemically blackened. To know the most likely color combination for any particular unit, you have to study an unaltered example around the same unit serial number. For example, I know from GM photos that the 45 degree elbow connecting the PCV valve to the 7375 plenum was initially bare brass. Then during most of the '63 model year it was blackened. Near the end of '63 production it went back to bare brass.