G gclintonmopars Well-Known Member Joined Jun 22, 2009 Messages 101 Reaction score 1 Location Shreveport La Apr 22, 2013 #1 What was the last year Plymouth put the X on the 340 head Thanks gary.
1968FormulaS340 Well-Known Member Joined Aug 24, 2005 Messages 11,394 Reaction score 702 Location St. Helens Oregon Apr 22, 2013 #2 The 2531894 head ran into the 70/71 model year depending on what you read.
C crackedback FABO Gold Member FABO Gold Member Joined Aug 7, 2005 Messages 19,183 Reaction score 5,931 Location 92201 Apr 22, 2013 #3 If an X headed 340 made it to 1971 production it's one in a million. 915 J heads were the primary head in 1970. The X heads ran early in production for 1970 and I've seen some December 1969 build cars with them, but they are not the norm.
If an X headed 340 made it to 1971 production it's one in a million. 915 J heads were the primary head in 1970. The X heads ran early in production for 1970 and I've seen some December 1969 build cars with them, but they are not the norm.