GM Service Manual Online
For 1990-2009 cars only

Application

Specifications

Metric

English

General

  • Engine Type

In-Line-4

  • Displacement

2.8L

170 cu in

  • RPO

LK5

  • VIN

8

  • Bore

93 mm

3.66 in

  • Stroke

102 mm

4.02 in

  • Compression Ratio

10:1

  • Engine Compression Test

1482 kPa

215 psi

  • Firing Order

1-3-4-2

  • Spark Plug Gap

1.14-1.25 mm

0.044-0.050 in

Block

  • Crankshaft Main Bearing Bore Diameter

78.070-78.088 mm

3.0760-3.0766 in

  • Cylinder Bore Diameter

92.990-93.006 mm

3.6638-3.6644 in

  • Cylinder Bore Out-of-Round

0.013 mm

0.0005 in

  • Cylinder Head Deck Surface Flatness

0.08 mm

0.003 in

  • Cylinder Liner Recession

0.015 mm

0.0006 in

Camshaft

  • Camshaft End Play - Exhaust

0.045-0.215 mm

0.0017-0.0084 in

  • Camshaft End Play - Intake

0.051-0.201 mm

0.0020-0.0079 in

  • Camshaft Journal Diameter - All Intake and Exhaust #2-#7

26.936-26.960 mm

1.0612-1.0622 in

  • Camshaft Journal Diameter - Exhaust #1

29.936-29.960 mm

1.1794-1.1804 in

  • Camshaft Journal to Bore Clearance

0.040-0.085 mm

0.0015-0.0033 in

Connecting Rod

  • Connecting Rod Bearing Clearance

0.021-0.065 mm

0.0008-0.0025 in

  • Connecting Rod Bore Diameter - Bearing End

60.322-60.338 mm

2.3749-2.3755 in

  • Connecting Rod Bore Out-of-Round - Bearing End

0.006 mm

0.0002 in

Connecting Rod Side Clearance

0.05-0.35 mm

0.0019-0.0137 in

Crankshaft

  • Crankshaft End Play

0.112-0.388 mm

0.0044-0.0153 in

  • Crankshaft Main Bearing Clearance

0.012-0.064 mm

0.0004-0.0025 in

  • Crankshaft Main Journal Diameter

69.968-69.984 mm

2.7567-2.7574 in

  • Crankshaft Main Journal Out-of-Round

0.005 mm

0.0002 in

  • Crankshaft Main Journal Taper

0.005 mm

0.0002 in

Cylinder Head

  • Surface Flatness - Block Deck

0.08 mm

0.003 in

  • Surface Flatness - Exhaust Manifold Deck

0.08 mm

0.003 in

  • Surface Flatness - Intake Manifold Deck

0.08 mm

0.003 in

Exhaust Manifold

  • Surface Flatness

0.08 mm

0.003 in

Lubrication System

  • Oil Pressure - Minimum

85 kPa

12 psi @ 1200 RPM

Oil Pump

  • Oil Capacity - with Filter

4.7 L

5.0 qts

  • Oil Capacity - without Filter

4.2 L

4.5 qts

  • Gear Diameter - Drive

73.415-73.370 mm

2.893-2.891 in

  • Gear Diameter - Driven

87-86.975 mm

3.428-3.426 in

  • Gear Pocket - Depth

15.609-15.584 mm

0.615-0.614 in

  • Gear Pocket - Diameter

87.065-87.040 mm

3.430-3.429 in

  • Gear Thickness - Drive

15.546-15.521 mm

0.613-0.611 in

  • Gear Thickness - Driven

15.360-15.511 mm

0.605-0.611 in

  • Lobe Inner Diameter - Maximum

11.9 mm

0.469 in

  • Relief Valve-to-Bore Clearance

2.57-1.63 mm

0.101-0.064 in

Piston Rings

  • Piston Ring End Gap - First Compression Ring

0.20-0.40 mm

0.00787-0.0157 in

  • Piston Ring End Gap - Second Compression Ring

0.36-0.51 mm

0.0142-0.0201 in

  • Piston Ring End Gap - Oil Control Ring

0.250-0.760 mm

0.0098-0.0299 in

  • Piston Ring to Groove Clearance - First Compression Ring

0.043-0.093 mm

0.0017-0.0037 in

  • Piston Ring to Groove Clearance - Second Compression Ring

0.053-0.093 mm

0.0021-0.0037 in

  • Piston Ring to Groove Clearance - Oil Control Ring

0.059-0.215 mm

0.0023-0.0085 in

Pistons and Pins

  • Piston - Piston Diameter

92.971-93.005 mm

3.6603-3.6616 in

  • Piston - Piston Pin Bore Diameter

23.002-23.008 mm

0.9056-0.9058 in

  • Piston - Piston to Bore Clearance

-0.015-0.035 mm

-0.0006-0.0014 in

  • Pin - Piston Pin Clearance to Connecting Rod Bore

0.001-0.018 mm

0.0004-0.0007 in

  • Pin - Piston Pin Clearance to Piston Pin Bore

0.003-0.012 mm

0.00012-0.0005 in

  • Pin - Piston Pin Diameter

22.996-22.999 mm

0.9054-0.9055 in

Valve System

  • Valves - Valve Face Runout

0.038 mm

0.0015 in

  • Valves - Valve Seat Runout

0.05 mm

0.002 in

  • Valves - Valve Stem-to-Guide Clearance - Exhaust

0.0375-0.0775 mm

0.0015-0.0030 in

  • Valves - Valve Stem-to-Guide Clearance - Intake

0.030-0.065 mm

0.0011-0.0025 in

  • Valve Springs - Valve Spring Load - Closed

211-233 N at 35 mm

47.4-52.4 lb at 1.379 in

  • Valve Springs - Valve Spring Load - Open

578-632 N at 24.5 mm

130-142 lb at 0.965 in