[DAVID GAGNARD]

Ron61;

You have a 351-W block cast in 1974 peroid......The water pump outlet means nothing...I have an aluminum water pump from a 1965 289 Mustang on my 351-W.Been on there since 1996 and has been working just fine. The outlet is on the opposite side as the 351-W,water pumps from as early as 65 will fit or interchange on all 289's,302's,&351-W's....

A lot of small block parts will interchange and most "parts guys" don't have a clue what will and won't work... While junk yard hunting I have seen at least three times,a 302 with one original head and the other from an early 351-W.Car runs fine,how I have no idea,these two heads have different combustion chamber size as well as valve sizes...I guess the poor guy got what he could afford to keep his old car going....

David