REAR
TOP
Features of Note:
- Water pump openings on the left and right
- Metal ring to retain front rope style crank seal
- Flat cast "ring" towards the top inside of the casting for the cam button to ride on
- Oil pump passages (3 round holes on the lower right)
- Cast aluminum
Features of Note:
- Provision for a distributor
- Outside long bolts go through to the block water passages
- Water pump bypass nipple is at right angles (upper right of picture)
FRONT
BOTTOM
Features of Note:
- Flat cast area for water pump impeller
- Distinct casting relief showing where the oil pump shaft runs
- Water pump bypass on the upper right
Features of Note:
- Notice only two bolts for the oil pan in the bottom of the casting (for 14 bolt oil pans)
- Oil pump flange is typical Buick design
OIL PUMP
Features of Note:
- Dowel at right for the "loose" gear of the oil pump
- Hole at left is where oil pump shaft comes into the oil pump
- Slightly different casting than later covers