ALL small block rods are interchangable for the most part with minor variations.

273-318 rods were the same for cars up until 1970 (light duty)
70-2 car and 68-73 truck 318's shared the same floating pin rod as the 340.
All 360's used the same rod as the previously mentioned floating 318-340 rod only with a pressed pin up until 1994 when the 318-360 went to magnum design which is essentially still the same rod only with a narrower width (on the machined side) as Scratch mentioned.

If putting 360 rods in a 318 made a 340 I'd put cummins rods in a 440 to make a 572 monster! But unfortunately it doesn't work that way.