"Standard old-shool rule of thumb was 10-psi for every 1000 RPM. " I believe this is for chebbys and such. Most AMC TSMs call for at least 13 at idle and over 37 at highway rpm. (with hot oil I assume) Ken Quoting Greg Taylor <amundaza@xxxxxxxxx>: > Yes, do check the relief spring setup and/or if you have the bypass > flapper (if > you do ... you can get a pump cover withOUT one. > > Cold idle rebuilt should be 40-65 PSI . Warm should be no less than 20 PSI, > > usually is more about 45-50 PSI if the pump gears/housing are set > up properly. > Standard old-shool rule of thumb was 10-psi for every 1000 RPM. I personally > want to see more than 10-PSI at 1000 RPM. >  > Sincerely, > Greg Taylor > Rochester Hills, MI > 1989 Jeep Grand Wagoneer "TRMN8R2" > 330-CID AMC Stroker V8 > > > > > ________________________________ > From: Don <don_nsx@xxxxxxxxxxxx> > To: AMC List <amc-list@xxxxxxxxxxxx> > Sent: Sat, November 13, 2010 3:51:18 PM > Subject: [AMC-list] Oil pressure > > I recently had a rebuild done on a 70 390 engine. What oil pressure should > I be > getting at idle? I am afraid I may end up pulling this engine back out. > > > Jim > > Jim, > Donâ??t pull the engine until you check the oil pressure relief spring > system. > If the relief spring is too weak or installed wrong, it may be bypassing most > of > the pumps output. > Don > > > -------------- next part -------------- > An HTML attachment was scrubbed... > URL: > <http://list.amc-list.com/pipermail/amc-list-amc-list.com/attachments/20101113/0695d1aa/attachment.htm> > > _______________________________________________ > AMC-list mailing list > AMC-list@xxxxxxxxxxxxxxxxx > http://list.amc-list.com/listinfo.cgi/amc-list-amc-list.com > > > > > -------------- next part -------------- > An HTML attachment was scrubbed... > URL: > <http://list.amc-list.com/pipermail/amc-list-amc-list.com/attachments/20101113/a8a95ca1/attachment.htm> > _______________________________________________ > AMC-list mailing list > AMC-list@xxxxxxxxxxxxxxxxx > http://list.amc-list.com/listinfo.cgi/amc-list-amc-list.com > _______________________________________________ AMC-list mailing list AMC-list@xxxxxxxxxxxxxxxxx http://list.amc-list.com/listinfo.cgi/amc-list-amc-list.com