70 318 with 340 internals/Cyl Head

340six said
I think your info is off. Not all 340 had 2.02 lots of later one's had smaller valves. On J Heads it is. Toss Up as to what they have.

'72 and '73 340s had the smaller intake valve, the cast cranks, and lower compression by sinking the heavy pistons into the bore.