[chevyhouse]

i just finished installing the 388 in my truck yesterday, so far i have done the20 min cam run in, changed the oil and made about a 20 mile drive, i can't begin to tell you how nervous i am hoping everything is right and that this baby will last. we also primed it for a few min before the start. GMC Paul, i used napa premium 10w40 because i read somewhere not to use synthetic and i couldn't find anything detergent free like i had also read. i plan on switching to mobil one after the first 500 miles, any suggestions? the motor is a pretty hot build and will be doing alot of in town driving.