vivivivivibration

OK this is what I am trying to verify that your flywheel is indeed for a cast external balance crank.
The particular casting number is just a cast number and looks like they used these blanks and machined them to what ever application they needed internal or external balance, small block or big block. So we can't go by the cast number to identify the application.

Need to go by the one Large Drill hole for Identification.

nm9stheham is stating that if it has the one Large Drill Hole like in the diagram then it is indeed for an external balance cast 340 crank. That would make the one in your car wrong for your application. Still trying to find a photo of a neural balance flywheel without the one Large Drill Hole for balance.


The casting number is just that, a casting number and it would be on all flywheels no matter what engine it bolted to.