Are 340’s rare

Molnar different cranks for 318 so close to 340 would be 349

• The 3.580 stroke crank with a .030 oversize bore = 349 cubic inches
• The 3.790 stroke crank with a .030 oversize bore = 370 cubic inches
• The 4.000 stroke crank with a .030 oversize bore =390 cubic inches
• The 4.125 stroke crank with a .030 oversize bore = 402 cubic inches