General Motors 5.0 / 5.7 — Cylinder Head Installation - Left
Repair & overhaul
For the General Motors 5.0 / 5.7, from the General Motors service manual.
Before you start
- Do not use any type sealer on the cylinder head gasket, unless specified
Procedure
- Clean cylinder gasket surfaces on engine block and cylinder head.
- Inspect cylinder head locator dowel pins for proper installation.
- Place NEW cylinder head gasket over the locator dowel pins.
- Install cylinder head over dowel pins and gasket.
- Apply sealant to cylinder head bolt threads.
- Install bolts; tighten first pass to 30 N-m (22 lb ft) in sequence.
- Final pass to 75/65/55 degrees for long/medium/short bolts.
- Measure spark plug gap to 1.52 mm (0.060 in) and install NEW spark plugs.
Tools required
- J 36660-A Torque Angle Meter Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- First pass 30 N-m (22 lb ft)
- Long bolts 75 degrees
- Medium bolts 65 degrees
- Short bolts 55 degrees
- Spark plug gap 1.52 mm (0.060 in)
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.