I have a project car that I have been working on for about 6 years. It has a 440 with 727 in it. It is a 1977 440 and 727. I rebuilt the 727 a couple of years ago. The car is now running. I have it on jackstands. When you put it in forward or reverse gear it does not move wheels until about 3000 rpms. I put a pressure gauge on the return line and it only reads around 2psi at 1000 rpms and around 12-15 at about 3000 rpms while in drive. I have checked and adjusted both bands. I thought maybe the tabs were broken on the pump, so I pulled the transmission this morning. Tabs are still there nothing obviously wrong with pump. Any ideas would be greatly appreciated. Fluid was checked while in neutral.
