Iam running a 392 stroker moter in a race boat an have lost the bottem end twice. it lookes to me like a starvation issue. i believe i have made all the oil mods needed for this block. i am only turning the moter 68oo an cant figure out whats going on. i have had my navigaters eyes glued to the pessure gauge which allways reads positive. if any body can help or has experinced this type of problem in the past i would appreciate it