340 Question

yes,on the rear of the block there is a pipe plug that is in line with the distributor,if you pull it out there is a smaller plug in line with it,you should be able to pull the distributor and go down there with a small mirror and flashlight to see if it is installed,i take it your having oil pressure problems after a rebuild?any way you should be able to tell if it is in there or not but I ain't got a clue how to install it now that the engine is installed.Good Luck.