buffblazer
1/2 ton status
ok i got a weird question i bought a 69-79 gen 350 block and on the driver side of the block near the rear almost directly above the water jacket there is a hole going into the block. it would be the flat part of the block that the head bolts to, i have the head on and its right on the edge of the block next to the head and the edge of the block. its a threaded hole that goes deep but i cant see if it goes into the crankcase. my 86 block does not have this hole. does anyone know what it is? and if i made any sense at all? i will try and post a pic if i can find the diggy camera. but any help until then would be great.

