GM Service Manual Online
For 1990-2009 cars only

Application

Specification

Metric

English

Block

  • Cylinder Bore Diameter

79 mm

3.1 in

  • Cylinder Bore Out-of-Round - Maximum

0.0065 mm

0.0065 mm

  • Cylinder Bore Taper - Maximum

0.0065 mm

0.0065 mm

Camshaft

  • Bearing Journal #1 OD

29.935-29.95 mm

1.1785-1.1791 in

  • Bearing Journal #2-5 OD

26.935-26.95 mm

1.0604-1.0610 in

  • Camshaft Lobe Lift - Exhaust

8.5 mm

0.335 in

  • Camshaft Lobe Lift - Intake

8.5 mm

0.335 in

  • End Play

0.10-0.25 mm

0.004-0.0089 in

Cooling System

  • Capacity

7.2 L

7.6 qt

Crankshaft

  • Connecting Rod Bearing Clearance - All

0.019-0.071 mm

0.0007-0.0028 in

  • Connecting Rod Bearing Side Clearance

0.070-0.242 mm

0.0027-0.009 in

  • Connecting Rod Journal Diameter

42.971-72.987 mm

1.691-1.692 in

  • Connecting Rod Journal Out-of-Round

0.004 mm

0.0001 in

  • Connecting Rod Journal Taper

0.005 mm

0.0001 in

  • Crankshaft End Play

0.05-0.28 mm

0.002-0.011 in

  • Crankshaft Main Bearing Clearance - All

0.026-0.042 mm

0.001-0.002 in

  • Crankshaft Main Journal Diameter

54.982-54.994 mm

2.164-2.165 in

  • Crankshaft Main Journal Out-of-Round

0.004 mm

0.0001 in

  • Crankshaft Main Journal Taper

0.005 mm

0.0001 in

Cylinder Head

  • Overall Height

134.08-134.23 mm

5.279-5.285 in

General Data

  • Bore

79 mm

3.1 in

  • Compression Ratio

9.5:1

  • Displacement

1 598 cm³

97.5 in³

  • Engine Type

Dual Overhead Cam L-4

  • Firing Order

1-3-4-2

  • Maximum Power at 5,800 RPM

80 kW

120.7 hp

  • Maximum Torque

165 N·m

121.7 lb ft

  • RPO

L91

  • Spark Plug Gap

1.0-1.1 mm

0.039-0.043 in

  • Stroke

81.5 mm

3.21 in

  • VIN

6

Lubrication System

  • Lubricating Type

Forced Feed

  • Oil Capacity - With Filter

3.75 L

4 qt

Oil Pump

  • Gap Between Oil Pump Body and Outer Rotor

0.40-0.484 mm

0.0157-0.019 in

  • Inner Rotor Side Clearance

0.035-0.085 mm

0.001-0.003 in

  • Outer Rotor Side Clearance

0.45-0.10 mm

0.02-0.04 in

  • Relief Valve Spring Free Length

81 mm

3.2 in

Pin

  • Piston Pin Diameter

18.0 mm

0.708 in

  • Piston Pin Offset

0.7-0.9 mm

0.028-0.036 in

Piston

  • Clearance to Bore

0.020-0.040 mm

0.0008-0.0016 in

  • Piston Diameter

78.970 mm

3.1090 in

Piston Ring End Gap

  • First Compression Ring

0.2-0.3 mm

0.008-0.012 in

  • Second Ring Compression

0.5-0.6 mm

0.02-0.024 in

Piston Ring to Groove Clearance

  • First Compression Ring

0.050-0.080 mm

0.002-0.003 in

  • Second Compression Ring

0.050-0.082 mm

0.002-0.032 in

Sealants and Adhesives

  • Camshaft Carrier to Cylinder Head

HN 1581 - Loctite® 515

  • Exhaust Manifold Studs/Nuts

Anti-Seize Compound - HMC Spec HN 1325

  • Oil Gallery Plug

HN 1256 - Loctite® 242

  • Oil Pan Bolts

HN 1256 - Loctite® 242

  • Oil Pan Pickup Tube Bolts

HN 1256 - Loctite® 242

  • Oil Pump Bolts

HN 1256 - Loctite® 242

  • Rear Main Bearing Cap

GE P/N RTV 159

Valve Springs

  • Valve Spring Load - Closed

247-273 N @ 32 mm

182-202 lb @ 1.25 in

  • Valve Spring Load - Open

554-606 N @ 23 mm

409-447 lb @ 0.90 in

Valves

  • Valve Diameter - Exhaust

27.10-27.38 mm

1.085-1.0795 in

  • Valve Diameter - Intake

28.45-28.69 mm

1.1203-1.1297 in

  • Valve Face Angle

45-45.25 degrees

  • Valve Face Runout

0.03 mm

0.00118 in

  • Valve Guide Inside Diameter

6.0-6.02 mm

0.236-0.237 in

  • Valve Lash Compensators

Hydraulic Tappet

  • Valve Seat Angle

44.5-45 degrees

  • Valve Seat Runout

0.05 mm

0.002 in

  • Valve Seat Width - Exhaust

1.4-1.8 mm

0.055-0.071 in

  • Valve Seat Width - Intake

1.17-1.57 mm

0.046-0.062 in

  • Valve Stem Diameter - Intake

5.955-5.970 mm

0.2344-0.2350 in

  • Valve Stem Diameter - Exhaust

5.935-5.950 mm

0.2337-0.2343 in

Valve Guide Reaming Table

Size

Reamer

Production Code

Service Code

Normal

--

--

K

1.9 mm (0.075 in)

KM-805

1

K1

3.8 mm (0.150 in)

--

2

K2