Originally Posted by Too Many Projects
A122 would be January 12th of 1972. Doesn't line up with the assembly stamp on the front pad. Are you sure about the stamp ?? They can be faint and hard to read. OR it was restamped for some particular reason.
Measure the bore. That is a good indicator of engine displacement. A '72 block would only be a 350..
327 was discontinued mid-year of '69.
They are both 4 in bore so it wont do any good to measure it ,The stroke is what is different,,the 327 is 3.25 stroke .the 350 is 3.48 and a 302 is 3 in .also a 67 327 is a small journal ,68 up are large journal cranks ,iSounds like you have a 350 some one tried to pass off as a 327 Restamped ,,,a 68 327 and a 68 350 and 302 will have same casting # 3970010 on rear of block as the difference is in crank IF it is a small journal look at the crank seam it should have a steel crank ,a large journal could be either.
one other thing does it have vent tube under the distrubitor or pcv in valve cover.