Can find anything about this .
The guy that sold me the engine told my it was lunati , but the part no does not come upp in any searches.

I need to refresh the surface for new bearing , but i need to cheak if it is .

but i what to know the type, for

If it is induction hardened, no need to re-heat treat
If it is nitrated, it will need to be re-heat treated.

 

Can you give us some over all views of the crank shaft?

Maybe we can tell from the casting shape or machine work.

 

More pictures would be helpful. I can't find a single picture online of a lunati crank with markings even remotely similar to what you have in your picture.

The structure of the part number doesn't coincide with any of the part numbers used by crower, callies, scat, lunati, Ohio crank, or eagle, but I will continue to search.

 

Thanx for the help
here are more pic

 

That's definitely an aftermarket casting.