340 vs 360

stroker mike said

here's a thought, 340 block, 360 crank turned down, 360 pistons .060 over, 372 cubic inches on the cheap. There's your 400 rwhp with the right cam and heads. Best of both, minus the forged crank. Assembly would have to be internally balanced like 340. External balance requires either a b&m flexplate with a neutral balance converter or the weight kit from mopar. also requires 360 damper.

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I wouldn't call that on the cheap! You are going to pay more for the 340 block than a 360 block. You are going to pay more to have the 360 crank turned down to 340 size than turned to a standard undersize (if it even needs it). You are going to pay a whole lot more to internally balance a cast 360 crank than to pick up an external balance b&m flexplate and damper. AND, you only gain about 5 cubes over a 30 over 360.