Reply to "351C lubrication system & lubricants"

That may be because nearly 40 years after the 351C was introduced, mods to the oiling system are still being hotly debated as to whether they're worthwhile or not. Note that most were used only on very high rpm drag-race engines which have much different requirements than endurance or especially street engines.
For myself, the blown 351-Cs I've seen often involve rods from cylinders 1 & 2, so routing more oil to the back of the block would be counter-productive for them. If you do this, physically restrain the hose every 12" or so from front to back; a hot oil-carrying hose gets very soft and flexible, and is 'magnetically' attracted to header pipes, halfshafts etc. As anyone who ever owned a mid-60s British motorcycle with external oil lines, treat them like a heart-bypass hose! Also, use at least dash-8 (1/2" ID) hoses & fittings to minimize flow resistance. Finally, I wouldn't pull oil pressure off the front of the block (shown in the photo) as the info simply doesn't compare to anyone else's data since it comes directly from the pump and will be 15-30 psi higher than what one gets from the stock port in back of the block, after the bearings & lifters take their share.