Name kind of explains it. I implemented metadata for some blocks but all the names are the same. Info can be given if requested.

In your ItemBlock, override:

@Override
    public String getUnlocalizedName(ItemStack stack)
    {
    }

Make it return whatever you need it to based on the stack's properties, specifically using stack.getItemDamage().

 

Then use LanguageRegistry to register names to the blocks:

LanguageRegistry.addName(new ItemStack(block, 1, meta), "A Name");