quote:
yes... but at what pressure are you gonna pull the engine and have a rebuild ??? Knowing= measuring is knowledge but when to decide something ? OK, we don't speak of adding oil, change visco etc...what pressure is alarming ? Wink
Qualifiers: taking pressure from the back end of the engine using a calibrated gauge, below 10 psi hot at idle usually means a rebuild is in your near future. Pressures ABOVE 100 psi (cold) usually means you got sales-talked into some sort of 'special' oil pump that wastes horsepower and rapidly wears distributor drive gears- again pointing to at least a partial refurbishment soon.
This side of LeMans, a std plain-vanilla 351-C oil pump in a nice tight engine will give 15-25 psi (hot) at idle and 70 psi (hot) at 2500 rpms. For decades trouble-free, if you pair the pump with a fully baffled 10-qt oil pan. I personally like Aviaid's pan. Most engine overhaul shops in the U.S will no longer warranty a Pantera engine with a stock pan.