Fairly stock 375 hp 440 owner requsted high volume pump i said he didnt need it but whatever,he brings me val VR1 20w50 and its got a single bolt Comp Cam,i am about to start it and do the break in i want to drain that dowel pin buster and put in a 30w with zddp just want opinions i didng stand my ground on the oil pump or 20w50 but now i have ice cold feet and lighting it up it was a stiff prime on the drill im worried about the cam dowel any opinions are valued gi6ve it to me,thanks