installed a new 4l60e in my 95 z28. upon startup i know notice the oil psi real low, odd for a cold engine that litteraly before the trans swap was getting about 50-60 psi on startup, oh and yeah it did drop almost to 0 with the check gauge light on. Good news is that there is no noise and the trans shift find but why no oil psi im scared to drive it now.lol

 

Scope out the back of the engine where the oil pressure sensor is. It is common for people to damage the sensor by jacking the engine around or pinch the sensor wire, since it is right there where the trans bolts up.

 

thanks shoebox that will help me sleep a little better tonight. i pryed against the sensor that is on the bottom of oil pan on left side. is that it? engine moved up and down alot during install form jacking up and down and prying to put exhaust back up

 

No, that is the low oil sensor. The pressure sensor is behind the intake and get smashed when moving the engine upward too much.

 

Shoebox you where right on the money was a cracked sending unit praise jesus. car runs great put a 3200 stall in it, cant wait for a 1/8 mile pass