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Home >> Chevrolet >> 2020 >> Express 2500 LS, 6.0L Eng VIN G >> Repair and Diagnosis >> External Pages >> Different car >> Section 4 (Engine Mechanical - 2.8L (LWN) Diesel) >> Specifications >> Engine Mechanical Specifications

Engine Mechanical Specifications

WARNING: This page is about a different car, the 2019 GMC Savana 3500, 2019 GMC Savana 2500, 2019 Chevrolet Express 3500, and 2019 Chevrolet Express 2500. However, it is still accessible from the selected car via links, so may be relevant.
Application Specification
Metric English
General
  • Engine Type
 Inline 4 Cylinder
  • Displacement
 2. 8 Liter 171 cu in
  • RPO
 LWN
  • Bore
 94 mm 3. 7008 in
  • Stroke
 100. 05 mm 3. 9390 in
  • Compression Ratio
 16. 5: 1
  • Maximum compression pressure variation between 2 cylinders
 500 KPa 72. 5 psi
  • Idle Speed
 760 RPM (ATX)
875 RPM (MTX)
  • Firing Order
 1-3-4-2
Block
  • Cylinder Bore Internal Diameter
 94 mm 3. 700 in
  • Cylinder Bore Out-of-Round
 0. 007 mm 0. 0003 in
  • Cylinder Head Deck Surface Flatness - Flatness/Span
 0. 02 mm/75 mm 0. 03 mm/106 mm 0. 1 mm/400 mm 0. 0008 in/2. 95 in 0. 0012 in/4. 17 in 0. 0039 in/15. 75 in
Camshaft
  • Camshaft End Play - Maximum
 0. 350 mm 0. 013 in
  • Camshaft End Play - Minimum
 0. 150 mm 0. 006 in
  • Camshaft Inner Journal Diameter - at Cylinder Head
 26. 000 - 26. 015 mm 1. 027 - 1. 033 in
  • Camshaft Journal Clearance
 0. 03 - 0. 075 mm 0. 001 - 0. 003 in
  • Camshaft Lobe Lift - Exhaust - Production
 4. 5 mm 0. 177 in
  • Camshaft Lobe Lift - Intake - Production
 4. 5 mm 0. 177 in
  • Camshaft Outer Journal Diameter - at Crankshaft
 25. 95 mm 1. 021 in
Connecting Rod
  • Connecting Rod Diameter - Large End
 57. 563 mm 2. 266 in
  • Connecting Rod Diameter - Small End
 32 mm 1. 26 in
Cooling System
  • Thermostat Opening Temperature
 80°C 176°F
Crankshaft
  • Crankshaft End Play
 0. 10 - 0. 33 mm 0. 004 - 0. 013 in
  • Crankshaft Journal Clearance - Maximum
 0. 075 mm 0. 003 in
  • Crankshaft Journal Clearance - Minimum
 0. 030 mm 0. 0012 in
  • Crankshaft Main Journal Diameter - Production
 65 mm 2. 559 in
Cylinder Head
  • Cylinder Head Height
 135. 5 mm 5. 334 in
  • Surface Flatness - Deformation Tolerance - Flatness/Span
 0. 05 mm/15 mm 0. 075 mm Total 0. 0019 in/0. 59 in 0. 0030 in Total
Exhaust Manifold
  • Surface Flatness - Deformation Tolerance
 0. 075 mm 0. 0030 in
Intake Manifold
  • Surface Flatness - Deformation Tolerance
 0. 075 mm 0. 0030 in
Lubrication System
  • Oil Capacity - with Filter
 6. 0 qt 5. 7 L
  • Oil Pressure - Minimum - Warm - at idle
 70 KPa 10 psi
  • Oil Pressure - Minimum - 3800 RPM
 250 KPa 36 psi
  • Oil Relief Valve Opening Pressure
 500 KPa 72. 5 psi
Oil Pump
  • Oil Pump Inner Rotor End Play - Maximum
 0. 01 mm 0. 0004 in
  • Oil Pump Inner Rotor End Play - Minimum
 0. 09 mm 0. 0036 in
  • Oil Pump Outer Rotor End Play - Maximum
 0. 09 mm 0. 0036 in
  • Oil Pump Outer Rotor End Play - Minimum
 0. 01 mm 0. 0004 in
  • Oil Pump Outer Rotor to Body Diameter Clearance - Maximum
 0. 130 mm 0. 0051 in
  • Oil Pump Outer Rotor to Body Diameter Clearance - Minimum
 0. 230 mm 0. 0091 in
Piston Rings
  • Piston Ring End Gap - First Compression Ring
 0. 25 - 0. 65 mm 0. 0098 - 0. 0256 in
  • Piston Ring End Gap - Second Compression Ring
 0. 30 - 0. 45 mm 0. 0118 - 0. 0177 in
  • Piston Ring End Gap - Oil Control Ring
 0. 25 - 0. 50 mm 0. 0098 - 0. 0196 in
  • Piston Ring to Groove Clearance - First Compression Ring
 0. 080 - 0. 13 mm 0. 0031 - 0. 0051 in
  • Piston Ring to Groove Clearance - Second Compression Ring
 0. 070 - 0. 110 mm 0. 0027 - 0. 0043 in
  • Piston Ring to Groove Clearance - Oil Control Ring
 0. 040 - 0. 080 mm 0. 0015 - 0. 0031 in
Pistons and Pins
  • Piston Diameter - Production (as measured 39 mm from bottom of piston)
 93. 793 - 93. 807 mm 3. 6926 - 3. 6932 in
  • Piston Pin to Bore Clearance - Production
 0. 015 mm 0. 0006 in
  • Piston Pin Diameter
 32 mm 1. 26 in
  • Piston Pin Length
 70. 7 - 71. 0 mm 2. 78 - 2. 79 in
Valve System
  • Valve Face Angle
 45 degrees 30'
  • Valve Head Diameter - Exhaust
 29. 4 mm 1. 15 in
  • Valve Head Diameter - Intake
 32. 0 mm 1. 25 in
  • Valve Lifters Diameter
 11. 994 mm 0. 472 in
  • Valve Seat Angle
 45 degrees
  • Valve Seat Runout
 0. 6 mm 0. 024 in
  • Valve Seat Width - Exhaust
 1. 5 - 1. 75mm 0. 059 - 0. 069 in
  • Valve Seat Width - Intake
 1. 5 - 1. 75mm 0. 059 - 0. 069 in
  • Valve Spring Free Length
 50. 8 mm 2. 00 in
  • Valve Spring Installed Height - Closed Valve
 38 mm 1. 49 in
  • Valve Spring Installed Height - Open Valve
 29 mm 1. 14 in
  • Valve Stem Diameter - Exhaust
 5. 96 mm 0. 235 in
  • Valve Stem Diameter - Intake
 5. 97 mm 0. 235 in
  • Valve Stem-to-Guide Clearance - Exhaust
 0. 040 - 0. 070 mm 0. 0016 - 0. 0028 in
  • Valve Stem-to-Guide Clearance - Intake
 0. 030 - 0. 060 mm 0. 0012 - 0. 0024 in
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