kevinP you do know how notorious they are for needing the crankshaft sludge traps removing and cleaning out I hope . If it hasnt had them cleaned in a while you could have trouble . They are also quite bad at having low oil pressure when hot . The fix is to swap the oil pipe to the gauge with the one to the rockers , if it hasnt already been done ,so its the smaller one to the rockers , which still allows plenty of oil , and the larger to the gauge . mines a 51 with the oil gauge only set in the tank .