I've finally completed a rebuild. I'm using 10w-30 dino oil. The engine has a 268h cam and Edelbrock Performer intake and carb and an oil-bypass hose that runs from the front of the block near the fuel pump to a 'T' fitting in the back of the block. Also at the 'T' fitting there is the oil temp sensor and another fitting where I have a good quality snap-on mechanical oil pressure guage temporarily connected. I'm noticing that the oil pressure is fluctuating between about 65-69 psi when cold and even once its been running for about 15 minutes. Is the fluctuation and psi normal? Thanks for any help.