5Clint7
06-25-2013, 06:47 AM
There are 2 different front oil pan gaskets seals for small block Chevy's. To know which one to use, lay a straight edge across the front top of the oil pan and measure to the center of the opening. 55-74 = 2¼" 75-84 = 2 3/8". 1987Hope this helps someone.