SB Mopar Kellog/Chrome-A-Shaft Crankshaft

In a 318 block, Crank will make 307 ci motor with 3.910" bore or 312 ci with 3.940" bore. In a 340 block, it will make 331 ci at 4.060" bore or 333 ci with a 4.070" bore. Many other possibilities especially with a short deck big bore R3 block.