B3.9 and B5.9 Series Engines
Section 1 - Cylinder Block - Group 01
NOTE: The main bearing caps are numbered for location.
No. 1 starts with the front of the cylinder block and the
numbers must face the camshaft side of the engine.
When installed correctly, the main bearing tangs should
both be on the same side.
Position the main bearings and main bearing caps onto the
The thrust bearing journal does not have tangs or slots.
Care must be taken to make sure the number stamped on
the main bearing cap is positioned to the camshaft side of
Lubricate the main bearing capscrew threads and under-
side of the capscrew head with clean lubricating engine oil.