Thanks Joe, my engine is not the final power it will have, but it sure won't be done at those 500hp

What is the intended use?  The cast crankshafts are plenty strong for upwards of 500 hp with lightweight forged pistons and lightweight rods.  Some of the stroked 312 crankshafts are in engines making ~550-570hp.    Unless you plan on installing a blower or going endurance racing, the cast should work just fine.  Joe-JDC

JDC

Thank you for the images, and which one is more desirable?

Here are some pics of the various Y crankshafts.  Observe that the cast crankshafts have eight counterweights each while the steel crankshaft only has six.  In the following picture and from top to bottom:
292 – cast
312 – cast
292 – steel
 
 
The crankshafts are also identifiable by examining the front throws of each.
 
   272/292 cast
 
   312 cast
 
   292 steel 

Lorena, Texas (South of Waco)

thanks guys for the clarifications, I have the crankshaft in the machine and I didn't check, the model

Do you see the crankshaft throw just in front of the #2 Main?  There is a thin parting line in the picture visible.  Like John said, it is a cast crankshaft.  Joe-JDC

JDC

Yours is a cast crank.  For your use, it is completely adequate.

John - "The Hoosier Hurricane"

which of them is the most desirable? Can you tell me by the image what is this? thanks and sorry for the intrusion

Thanks, That helps a lot. Any idea what the going rate for one is? Not looking to get rich off it. Just looking for a fair  asking price.

A cast crankshaft will have a very thin straight casting lines where it came out of the molds, whereas the forged crankshaft will have a very thick uneven line where the forging metal bulged at the parting lines from the forging process.  Joe-JDC

JDC