Small block motor mount question

dust44d said

The 360 left side mount has a wider bushing to fit into the k frame mount.I found only 318 mounts being repopped and they noted that washers needed to be used to fill gap,so basically they are 318,narrow mounts.

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The '73-6 A-body 318/340/360 K-members are all the same, so they have the same width rubber section of the mount. It's the engine bracket section that is different between the 318 and the 340/360. The 340/360 brackets are narrower on the driver's side.