oil pressure

Hi Guys, I just got my first Cougar, it's a 67 with 289 auto. It's been customized years ago with fender flares and shaved door handles but the previous owner says mechanically it hasn't been changed. My concern is I put a set of new Auto Meter mechanical gauges in (I always put gauges in my...

I recently replaced my timing gears and chain and distributor and Just put in a oil pressure gauge and new sender. When i first started the car with the new oil pressure gauge it read 50 - 60 now and slowly worked down. Now when i start it i have bad lifter noise for 10 seconds and it goes...