kdtrucker

Well The simple fact is it may be a fresh new rebuilt motor,...but there are steps to take in ensuring good oil pressure. One is making sure there is enough cleearence between the cam and the bearings (.002-.004) to have enough oil flow. It's always a must to use bearing that match up to the cam. Another is carving out the main bearings at the oil hole to match the hole in the cap so that there will be plenty of flow. another is making sure you use a new rocker assembly, esspecialy the rocker shaft, if it's worn out you get low pressure and you'll also fill up the top of the head with oil and possibly run the pan dry. And always make sure the block is cleaned with soap and water, as many time as it takes to get all debris out of the block, wich in turn may cause low oil pressure.

Good oil pressure is a combination of new parts and clean engine passage ways!