DeVille V8-4.6L VIN 9 (1995)
Powdered Metal Connecting Rods
The connecting rods are now composed of forged powdered metal rather than forged steel. During the manufacturing process, the connecting rods are
actually cast as one piece and the caps are separated from the rest of the rod on a scribed parting line. These rods can be identified by the use of bolts
versus a stud and nut combination to hold the cap on the crankshaft (see Figure 2).
The powdered metal connecting rods should never be used in conjunction with the previous design forged steel connecting rods because of mass
differences between the two designs.
Water Pump
A new water pump, which has larger vanes, will be incorporated in the 1995 Northstar engine. Also, a new special service tool, number J 38816-A, for
the revised water pump will be available soon.
Revised Oil Filter Adapter Mounting Bolt
A new oil filter adapter mounting bolt was introduced during the 1994 model year and is used in all 1995 model year engines. The new bolt has a
captured conical-spring type washer and should be used in place of the previous style fastener, regardless of model year, when servicing the oil filter
adapter. In addition, the torque specification for the bolt is now 16 N-m (12 lbs.ft.) versus the previous design spec of 25 N-m (18 lbs.ft.). Order the new
fasteners under part number 3546520.
Revised Oil Pump Assembly
