1968 Plymouth Barracuda

Reinstalled the new alternator Monday and that solved nothing. This might be a good tip for you (common sence really). While running the engine that high pitch noise wasnt coming from the alternator yet below it. I use a 3 ft. cut of old AC hose, put one end to my ear and poked around the engine (running) to identify where that noise was coming from. It was coming from around the fuel pump and crank pulley, so I quickly shut it off because that could be the pump or a seal/bearing in the engine.
Took off the alt. and fuel pump and cleaned them up. The fuel pump was dry as a fart so I turned to the oil. I had put some heavy weight oil in there because I had got'n a good deal on gallons of it. Changed the oil to 5W-30 conventional, squirted the pump down and installed it. I put a pint too much in so it could work its way around the engine and let it run for about 2 minutes, drained the extra and brought it up to temp. Went over everything no leaks, no noise, nice.
Found some what of a collectors item a few weeks ago I plan on installing when I peel the dash apart. I'm going to run a manual valve body in my 727 so I'm gunna need a tach. I'm using Stewart Warner gauges, oil press./water temp./vac. and didnt want to veer too far away from that "old school" yet "modern" look. Found a Stewart Warner TrackForce 5" elec. tachometer. I'll be using an MSD Tach Adapter to rout it to the ignition box and mount it on the dash in plain view. Heres a pic.