crank casting

you can post the serial number of the block and its production date to be sure of the unit,and any secondaru codes on the deck surface in front of the head.A cast crank has a 1/8 parting line running down the crank,the forged unit is about a 1" wide,cast crank is darker in color than the forged.What you have is a 92 360 motor with a cast crank and its externally balanced.Check most spec sheets for the average C/R for these motors,most will be around 9:0/1,Mrmopartech