identify the year of my 360 long block

Specs on distributors, carburetors, and camshafts are tuning issues best left to the current owner of the car or his/her engine builder. Those factory tuning specs as well as all the emissions parts under the hood in the "as delivered to the dealer condition" changed yearly at the whim of the EPA. I got the impression hotuairgypsy was concerned with what would "FIT" the LA360 he has, which I believe is a 1978. If I read him wrong and he is building a concourse queen that will lose the competition if the wrong tag is screwed to the distributor, or the wrong year intake is on there, or God forbid the engine serial doesn't match the body # then I apologize for my generalizations, no harm was intended. Noted; the windage tray on the 340 is a tad smaller diameter, but it is made of light sheet metal and is easily reshaped by hand and works just fine. Neither you nor I mentioned the TA rods which are significantly different in weight...but not in critical dimensions. The weight issue is taken care of by the engine builder's machine shop. However, they do "fit".