General Motors — Piston and Connecting Rod Installation
Installation
From a General Motors service manual — check it applies to your exact model before use.
Before you start
- Numbers on the connecting rod and bearing cap must be on the same side when installed.
Procedure
- Install connecting rod bearing inserts in rod and cap.
- Install J 5239 onto the connecting rod bolts.
- Locate the piston ring end gaps as shown.
- Lubricate piston and rings; install J 8037 over the piston.
- Tap piston into its matching bore; notch (5.0L/5.7L) or dimple (7.4L) faces the front.
- Guide the connecting rod into position on the crankpin using J 5239.
- Install connecting rod cap with bearing insert and nut.
- Torque connecting rod bolt nuts to 61 N-m (45 lbs ft).
Tools required
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Connecting rod bolt nuts: 61 N-m (45 lbs ft)
Source: General Motors service manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.