[cadillac_al]

I can't even count the number of worn 305/350 cams I have replaced without tearing down the engine. The shop I used to hang out at in the 70's used to just remove and replace them too. The oil filter must work. A full tear down is always better if you have the time and money for the peace of mind. If it's just an old truck, send it. MY 76 K15 is on it's 3rd cam at 180k miles.