RaniDart70 said

I have had a few 72/3 dated engines with the thicker balancer like that ....that don't look like a cast crank balancer to me.

I bet its an HP motor or has the six pack rods ....the heavier rods take the thicker balancer and changes things on the bottom end for flywheels and related.

check the ID boss to the right of the distributor and see if there any markings like "HP2" or anything else

Click to expand...

RaniDart70 said

also that looks like a front sump truck pan ....which means it is out of a truck and heavy trucks used forged cranks and heavier rods up to 75

Click to expand...

RaniDart70 said

your on because every cast crank balancer I ever had on a 440 looked like this one

Click to expand...