Engine Mechanical Specifications

2001 Chevrolet Chevy Express G2500, Van Passenger Extended, 5.0 MSECTION Engine Mechanical Specifications
WARNING: This page is about a different car, the 2001 GMC Sierra, 2001 GMC Cab & Chassis Sierra, 2001 Chevrolet Silverado, and 2001 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
Engine Mechanical Specifications

Application Specification
Metric English
General
  • Engine Type
90 degree V-8
  • Displacement
6.6 Liter 402 cu in
  • Idle Speed
600 RPM
  • Cylinder Block Material
Gray Iron
  • Compression Ratio
17.5
  • Compression Pressure - Production
3158 KPa 458 psi
  • Bore
103 mm 4.0551 in
  • Stroke
99 mm 3.8976 in
  • Upper Oil Pan Material
Aluminum
  • Cylinder Head Material
Aluminum
  • Valve Arrangement
4 Valves
  • Valve Seat Inserts
Yes
  • Head to Block Attachment
6 Bolts/Cylinder
  • Stroke Cycle
Four Stroke
  • Ignition Method
Compression
  • Fuel Injection
High Pressurized Direct Injection
  • Maximum Pressure
160 MPa
  • Intake Manifold Material
Cast Aluminum
  • Exhaust Manifold Material
Cast Nodular Iron & Steel Pipe
  • Air Intake System
Turbocharged, Charge Air Cooled
  • Engine Mounting
Three Point with Transmission
  • Firing Order
1-2-7-8-4-5-6-3
  • Crankcase Ventilation
Open PCV
  • Cylinder Liner
None
  • Start Aid
Glow Plug
Starter Motor
  • Type
Torque Reduction
  • Manufacturer
Hitachi
  • Rated Output
3.5 KW
Camshaft
  • End Play - Production Valve
0.050-0.114 mm 0.0020-0.0045 in
  • End Play - Service Limit
0.2 mm 0.0079 in
  • Number Furnished
1
  • Bearing Material
Steel Backed Pb-Sn-Cu Alloy
  • Number of Bearings
5
  • Camshaft Drive Type
Gears
  • Material
Steel
  • Journal Diameter - Service Limit
60.92 mm 2.3984 in
  • Journal Diameter - Production Value
60.932-60.962 mm 2.3990-2.4001 in
  • Camshaft Bearing Inside Diameter - Service Limit
61.07 mm 2.4043 in
  • Camshaft Bearing Inside Diameter - Production Value
61.00-61.03 mm 2.4016-2.4028 in
  • Lobe Lift (Exhaust) - Production Value
5.907 mm 0.2326 in
  • Lobe Lift (Intake) - Production Value
7.273 mm 0.2863 in
  • Runout - Service Limit
0.05 mm 0.0020 in
Roller Lifter and Push Rod
  • Roller Lifter Roller Projection - Service Limit
0.9 mm 0.0354 in
  • Roller Lifter Roller Projection - Production Value
0.989-1.0 mm 0.0389-0.0394 in
  • Push Rod Bent Condition - Service Limit
Less Than 0.8 mm Less Than 0.0315 in
Connecting Rods
  • Type & Material
Forged Steel Fracture Split
  • Length Center to Center
163.0 mm 6.42 in
  • Piston Pin Bushing
Steel Backed Pb-Sn-Cu Alloy
  • Lower End Rod Bearing Type
Straight Split
  • Make
Steel Backed Pb-Sn-In Overlay
  • Connecting Rod Bearing Clearance - Service Limits
0.10 mm 0.0039 in
  • Connecting Rod Bearing Clearance - Production Value
0.036-0.077 mm 0.0014-0.0030 in
  • Connecting Rod Side Clearance - Service Limits
0.54 mm 0.0213 in
  • Connecting Rod Side Clearance - Production Value
0.31-0.49 mm 0.0122-0.0193 in
  • Connecting Rod Bearing Inside Diameter - Production Value
62.958-62.979 mm 2.4789-2.4795 in
  • Small End Inside Diameter - Service Limits
34.53 mm 1.3594 in
  • Small End Inside Diameter - Production Value
34.512-34.522 mm 1.3587-1.3591 in
  • Small End Bearing Clearance - Service Limits
0.08 mm 0.0031 in
  • Small End Bearing Clearance - Production Value
0.012-0.027 mm 0.0005-0.0011 in
Crankshaft
  • Material
Forged Steel
  • Heat Treatment
Nitrided
  • Main Journal Diameters
80.0 mm 3.15 in
  • Crankpin Diameter
63.0 mm 2.48 in
  • Harmonic Balancer
Rubber Damper
  • Flywheel Material
Cast Iron
  • Main Bearing Type
Steel Backed Pb-Sn-Cu Overlay
  • Number of Bearings
5
  • End Thrust Taken By
Crank Thrust Bearing
  • Total Bearing Length
103.5 mm 4.07 in
  • Total Projected Area
13,006 mm2 20.16 in2
  • Crankshaft Bearing Clearance - Service Limits
0.014 mm 0.0055 in
  • Crankshaft Bearing Clearance - Production Value
0.037-0.072 mm 0.0015-0.0028 in
  • Crankshaft End Play - Service Limits
0.54 mm 0.0213 in
  • Crankshaft End Play - Production Value
0.04-0.205 mm 0.0016-0.0081 in
  • Crankshaft Journal Diameter - Main - Service Limits
79.89 mm 3.1453 in
  • Crankshaft Journal Diameter - Main - Production Value
79.905-79.925 mm 3.1459-3.1466 in
  • Crankshaft Runout - Service Limits
0.44 mm 0.0173 in
  • Crankshaft Runout - Production Value
0.05 mm 0.0020 in
  • Crankpin Diameter - Service Limits
62.88 mm 2.4756 in
  • Crankpin Diameter - Production Value
62.902-62.922 mm 2.4764-2.4772 in
Cylinder Bore
  • Diameter - Service Limits
103.11 mm 4.0594 in
  • Diameter - Production Value
102.997-103.023 mm 4.0550-4.0560 in
Cylinder Head
  • Surface Flatness - Cyl. Block Side - Service Limits
0.1 mm 0.0039 in
  • Surface Flatness - Exhaust Side - Production Value
0.1 mm 0.0039 in
  • Surface Flatness - Intake Side - Production Value
0.1 mm 0.0039 in
Exhaust Manifold
  • Surface Flatness - Production Value
0.3 mm 0.0118 in
Intake Manifold
  • Surface Flatness - Production Value
0.3 mm 0.0118 in
Oil Pump
  • Gear Teeth to Housing Clearance - Service Limit
0.22 mm 0.0087 in
  • Gear Teeth to Housing Clearance - Production Value
0.125-0.221 mm 0.0049-0.0087 in
  • Gear to Cover Clearance - Service Limit
0.109 mm 0.0043 in
  • Gear to Cover Clearance - Production Value
0.064-0.109 mm 0.0025-0.0043 in
  • Gear Shaft to Bushing - Service Limit Clearance
0.14 mm 0.0055 in
  • Drive Gear Shaft Outside Diameter - Service Limit
19.86 mm 0.7819 in
  • Drive Gear Shaft Outside Diameter - Production Value
19.947-19.960 mm 0.7853-0.7858 in
  • Driven Gear Shaft Outside Diameter - Service Limit
19.86 mm 0.7819 in
  • Driven Gear Shaft Outside Diameter - Production Value
19.947-19.960 mm 0.7853-0.7858 in
Pistons
  • Type
1 Piece
  • Material
Aluminum
  • Skirt
Antiscuff/Barrel Shaped
  • Head
Ni-resist Insert for Top Ring Groove
  • Coolant
Oil Cooling Channel
  • Piston Pin Type
Hollow
  • Material
Steel
  • Diameter
34.5 mm 1.36 in
  • Retention Method
Snap Ring
  • Piston Rings Number
3
  • Top Compression Ring Type
Keystone Ring
  • Top Compression Ring Material
Steel
  • 2nd Compression Ring Type
Positive Twist/Inner Cut
  • 2nd Compression Ring Material
Cast Iron
  • Oil Control Ring Type
Bevel-Edged Oil Control Ring
  • Oil Control Ring Material
Steel
  • Piston Diameter - Production Value
102.898-102.910 mm 4.0510-4.0516 in
  • Piston to Bore Clearance - Production Value
0.090-0.120 mm 0.0035-0.0047 in
  • Piston to Small End Clearance - Production Value
5 mm 0.1969 in
  • Piston Outside Diameter - At 22 mm from Piston Bottom - Production Value
102.948-102.960 mm 4.0531-4.0535 in
  • Bore Inside Diameter for Piston Pin - Production Value
34.504-34.512 mm 1.3584-1.3587 in
Piston Pins
  • Clearance in Piston - Service Limit
0.017 mm 0.0007 in
  • Clearance in Piston - Production Value
0.004-0.017 mm 0.0002-0.0007 in
  • Pin Diameter - Service Limit
34.45 mm 1.3563 in
  • Pin Diameter - Production Value
34.495-34.5 mm 1.3581-1.3583 in
Piston Rings
  • Compression Ring Gap - Service Limit
1.37 mm 0.0539 in
  • Compression Ring Gap - Production Value
0.3-0.45 mm 0.0118-0.0177 in
  • 2nd Ring Gap - Service Limit
1.35 mm 0.0531 in
  • 2nd Ring Gap - Production Value
0.50-0.65 mm 0.0197-0.0256 in
  • Oil Ring Gap - Service Limit
1.20 mm 0.0472 in
  • Oil Ring Gap - Production Value
0.15-0.35 mm 0.0059-0.0138 in
Piston Ring Groove Clearance
  • Compression Ring - Service Limit
0.26 mm 0.0102 in
  • Compression Ring - Production Value
0.08-0.17 mm 0.0030-0.0067 in
  • 2nd Ring - Service Limit
0.10 mm 0.0039 in
  • 2nd Ring - Production Value
0.01-0.03 mm 0.0004-0.0012 in
  • Oil Ring - Service Limit
0.12 mm 0.0047 in
  • Oil Ring - Production Value
0.01-0.03 mm 0.0004-0.0012 in
Rocker Arms
  • Rocker Arm Shaft Outside Diameter - Service Limit
21.85 mm 0.8602 in
  • Rocker Arm Shaft Outside Diameter - Production Value
21.979-22.000 mm 0.8653-0.8661 in
  • Rocker Arm Inside Diameter - Production Value
22.010-22.035 mm 0.8665-0.8675 in
  • Rocker Arm Shaft and Arm Clearance - Service Limit
0.20 mm 0.0079 in
  • Rocker Arm Shaft and Arm Clearance - Production Value
0.010-0.056 mm 0.0004-0.0022 in
Valve Operating Mechanism
  • Type
Overhead Valve
  • Valve Guide Material
Iron
  • Valve Guide Type
Replaceable
  • Lifter Type
Roller
  • Rocker Arm Ratio
1.36:1 (Inlet), 1.69:1 (Exhaust)
  • Rocker Arm Type
Conventional
  • Rocker Arm Material
Forged
  • Rocker Arms Shaft Support
Aluminum Die Casting
  • Rocker Arm Shaft Material
Steel
Valves, Intake
  • Type
Double
  • Material
Silicon Steel
  • Number Per Cylinder
2
  • Rotation
None
  • Seat Insert Material
Sintered Steel
  • Seat Angle - degrees
45 degrees from Vertical
  • Head Diameter - in
33 mm 1.30 in
  • Stem Diameter - in
7 mm 0.28 in
  • Lift - in
9.55 mm 0.376 in
  • Clearance - Cold - in
0.3 mm 0.012 in
Valves, Exhaust
  • Type
Double
  • Material
Silicon Steel
  • Number Per Cylinder
2
  • Rotation
None
  • Seat Angle
45 degrees from Vertical
  • Seat Insert Material
Sintered Steel
  • Head Diameter - in
31 mm 1.22 in
  • Stern Diameter - in
7 mm 0.28 in
  • Lift - in
9.62 mm 0.379 in
Valve System
  • Valve Face Angle - Production Value
45 degrees
  • Valve Margin - Production Value
  • Intake
1.2 mm 0.0472 in
  • Exhaust
1.0 mm 0.0394 in
  • Valve Margin - Service Limit
  • Intake
0.88 mm 0.0346 in
  • Exhaust
0.73 mm 0.0287 in
  • Valve Clearance - Production Value
0.3 mm 0.0118 in
  • Valve Guide Inside Diameter - Intake - Service Limit
7.09 mm 0.2791 in
  • Valve Guide Inside Diameter - Intake - Production Value
7.000-7.015 mm 0.2755-0.2762 in
  • Valve Guide Inside Diameter - Exhaust - Service Limit
7.16 mm 0.2819 in
  • Valve Guide Inside Diameter - Exhaust - Production Value
7.000-7.015 mm 0.2755-0.2762 in
  • Valve Depression - Exhaust - Service Limit
2 mm 0.0787 in
  • Valve Depression - Exhaust - Production Value
0.9 mm 0.0354 in
  • Valve Depression - Intake - Service Limit
2.5 mm 0.0984 in
  • Valve Depression - Intake - Production Valve
0.6 mm 0.0236 in
  • Valve Rocker Arm Ratio - Exhaust
1.69:1
  • Valve Rocker Arm Ratio - Intake
1.36:1
  • Valve Seat Angle - Production Value
45 degrees
  • Valve Contact Width - Exhaust - Service Limit
2.5 mm 0.0984 in
  • Valve Contact Width - Exhaust - Production Value
2.1 mm 0.0827 in
  • Valve Contact Width - Intake - Service Limit
2.5 mm 0.0984 in
  • Valve Contact Width - Intake - Production Value
2.1 mm 0.0827 in
  • Valve Spring Free Length - Production Value
56.6 mm 2.2283 in
  • Valve Spring Squareness - Service Limit
2.0 mm 0.0787 in
  • Valve Spring Installed Height - Exhaust - Production Value
41 mm 1.6142 in
  • Valve Spring Installed Height - Intake - Production Value
41 mm 1.6142 in
  • Valve Spring Tension - Exhaust - Service Limit
275 N at 41 mm 61.8 lb at 1.61 in
  • Valve Spring Tension - Exhaust - Production Value
315-363 N at 41 mm 71.0-81.6 lb at 1.61 in
  • Valve Spring Tension - Intake - Service Limit
306 N at 41 mm 68.8 lb at 1.61 in
  • Valve Spring Tension - Intake - Production Value
315-363 N at 41 mm 71.0-81.6 lb at 1.61 in
  • Valve Stem Outside Diameter - Intake - Service Limit
6.89 mm 0.2713 in
  • Valve Stem Outside Diameter - Intake - Production Value
6.952-6.970 mm 0.2737-0.2744 in
  • Valve Stem Outside Diameter - Exhaust - Service Limit
6.91 mm 0.2720 in
  • Valve Stem Outside Diameter - Exhaust - Production Value
6.942-6.962 mm 0.2734-0.2741 in
  • Valve Stem Clearance - Exhaust - Service Limit
0.20 mm 0.0079 in
  • Valve Stem Clearance - Exhaust - Production Value
0.038-0.071 mm 0.0015-0.0028 in
  • Valve Stem Clearance - Intake - Service Limit
0.20 mm 0.0079 in
  • Valve Stem Clearance - Intake - Production Value
0.030-0.063 mm 0.0012-0.0025 in
  • Valve Stem Seal Installed Height - Measured from the Top of the Cylinder Head to the Bottom of the Valve Stem Seal - Production Value
6.05 mm 0.2382 in
Cooling
  • Water Pump Type
Centrifugal
  • Capacity @ Engine RPM
270 L/min @ 3172 RPM
  • Pump Bearing Type
Shaft Bearing
  • Thermostat Type
Wax Pellet
  • Number of Thermostats
2
  • Drive System
Gear
  • Valve Opening Temperature
  • Thermostat 1
82°C 180°F
  • Thermostat 2 - Jiggle Valve
85°C 185°F
  • Full Open Temperature
110°C 230°F
  • Turbocharger Coolant Bypass Valve
60°C 140°F
Lubrication
  • Type - Main Connecting Rod, Camshaft Bearings, Rocker Arms and Rocker Arm Shaft
Pressurized
  • Type - Camshaft Lobes, Connecting Rod Bushings, Valve Lifters, Piston Pins, Timing Gear and Cylinder Walls
Splash
  • Oil Pump, Type
Gear
  • Oil Pressure-Minimum-Hot-at Idle
48 kPa 7 psi
  • Oil Pressure-Minimum-Hot-1800 RPM
193 kPa 28 psi
  • Oil Capacity-w/Filter Change
9.5 L 10 qt
  • Oil Capacity-w/o Filter Change
8.7 L 9.2 qt
  • Oil Filter Type
Full-Flow Throwaway Type
  • Oil Intake
Suction Bell, Front Sump
  • Oil Seal
Axial Type
  • Oil Cooler
Water Cooled Corrugated Fin
  • Oil Relief Valve Opening Pressure
441 kPa 64 psi
  • Piston Cooling Jet Valve Opening Pressure
176-216 kPa 26-31 psi
Air Intake System
  • Turbocharger
Yes
  • Turbo Boost
18 psi @ Peak Torque
  • Charge Air Cooler
Charge Air Cooled
  • Air Cleaner
Panel Element A1300 or A1306C for HD Usage
Fuel System
  • Lift Pump
Gear Type, Integral
  • Injector Pump, Pump Model
Bosch
  • Type
Common Rail
  • Drive
Gear
  • Fuel Filter
Number Used = 1
  • Type
Full Flow, Paper Element
  • Location
Right Hand Side of Engine
  • Fuel Shut-Off
Electronic
  • Fuel Injector Type
Electronic Injector
  • Timing Advance
Programmed
Turbocharger
  • Axial Play - maximum
0.11 mm 0.0043 in
  • Manufacturer
Ishikawajima Harima Industries
  • Model
RHG6
  • Radial Play - maximum
0.20 mm 0.0079 in
RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • You smell fuel, burning insulation, or see smoke.
  • Brakes feel soft, pull hard to one side, or make grinding noises.
  • The engine overheats, stalls repeatedly, or misfires under load.
  • You are missing required tools, torque specs, or safe lifting equipment.
  • You are not confident in the next step or safety outcome.