Can a throttle body from an 89 Dodge 318 engine be used on 77 360 block?

No, a throttle body from an '89 Dodge 318 won't directly fit a '77 Dodge 360. The '77 360 is a carburetor engine, while the '89 318 is fuel-injected. They have completely different intake manifolds and therefore incompatible throttle body setups. You'd need a whole new intake manifold and fuel injection system to make that work, which is a major undertaking.