Help on rebuilding a 73 340

draginmopars said

isn't a 73-340
external balanced?
if you are swapping out the 318
hate to see you finish the project
then car has the shakes>vibration

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73 340 externally balanced b & m 10235 flex plate is all you need. Works on 727 or 904, may have to grind on the starter for the 904 or use newer starter out of a magnum 5.9, 5.2 or 3.9. Then any neutral balance converter will work.