This upside down view of a side
oiler engine shows the bulge on the left side of the bottom
of
the block. The bolts for the cross-bolted main bearings are also
visible
just above the pan flange. All 427 engines, including the
center oiler, had the cross-bolted
main
bearings.
The 428 engine is flat to concave in this area, matching the other side. |