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HOMESERVICE MANUALSCHEVROLET2001SUBURBAN C1500REPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT VARIANT/TRIMSECTION 6 (ENGINE MECHANICAL - 8.1L - UNIT REPAIR OVERHAUL)SPECIFICATIONSENGINE MECHANICAL SPECIFICATIONS
2001 Chevrolet Suburban C1500

Engine Mechanical Specifications

2001 Chevrolet Suburban C1500SECTION Engine Mechanical Specifications
WARNING: This page is about a different variant/trim than selected.
Engine Mechanical Specifications

Application Specification
Metric English
General Data
  • Engine Type
 V-8
  • Displacement
 8.1 L 496 CID
  • RPO
 L18
  • VIN C/K/C3500HD
 G
  • VIN Medium Duty
 E
  • Bore
 107.950 mm 4.250 in
  • Stroke
 111.00 mm 4.370 in
  • Compression Ratio
 9.1:1
  • Firing Order
 1-8-7-2-6-5-4-3
  • Spark Plug Gap
 1.52 mm 0.060 in
Cylinder Head
  • Surface Flatness
 0.050 mm 0.002 in
  • Maximum Cylinder Head Block Deck Resurfacing
 0.3048 mm 0.012 in
Exhaust Manifold
  • Surface Flatness
 0.254 mm 0.010 in
Lubrication System
  • Oil Capacity without Filter Change
 5.7 L 6 Qts
  • Oil Pressure (Minimum)
 34 kPa @ 1,000 RPM 5 psi @ 1,000 RPM
  • Oil Pressure (Minimum)
 69 kPa @ 2,000 RPM 10 psi @ 2,000 RPM
  • Oil Filter System
 Full Flow
  • Oil Pump Type
 Gear Driven
Cylinder Bore
  • Diameter - Production
 107.950-107.968 mm 4.2500-4.2507 in
  • Diameter - Service
 107.940-107.990 mm 4.2496-4.2516 in
  • Out-of-Round Production (Maximum Minus Minimum Bore Diameter)
 0.0180 mm
(max.)		 0.0007 in
(max.)
  • Out-of-Round Service (Maximum Minus Minimum Bore Diameter)
 0.050 mm
(max.)		 0.002 in
(max.)
  • Taper Production
 0.0180 mm
(max.)		 0.0007 in
(max.)
  • Taper Service - Thrust Axis
 0.050 mm
(max.)		 0.002 in
(max.)
  • Taper Service - Pin Axis
 0.050 mm
(max.)		 0.002 in
(max.)
Engine Block (Production Specifications)
  • Main Bearing Bore Diameter
 74.6060-74.6220 mm 2.9372-2.9379 in
  • Lifter Bore Diameter
 21.417-21.443 mm 0.843-0.844 in
  • Deck Height from Crankshaft Bore
 259.875-260.125 mm 10.231-10.241 in
  • Head Deck Surface Flatness (entire face)
 0.100 mm 0.004 in
  • Head Deck Surface Flatness within 150 mm (6 in)
 0.050 mm 0.002 in
Piston
  • Piston Diameter (Coated Piston)
 Not Measurable Not Measurable
  • Clearance Production
 Interference Fit
(coated piston)		 Interference Fit
(coated piston)
Piston Ring Compression
  • Top Groove Clearance
 0.031-0.074 mm 0.0012-0.0029 in
  • Second Groove Clearance
 0.031-0.074 mm 0.0012-0.0029 in
  • Top Ring Production Gap
 0.300-0.450 mm 0.012-0.018 in
  • Top Ring Service Limit Gap
 0.450-0.675 mm 0.018-0.027 in
  • Second Ring Production Gap
 0.450-0.650 mm 0.017-0.025 in
  • Second Ring Service Limit Gap
 0.675-0.975 mm 0.026-0.039 in
Piston Ring Oil Control
  • Ring Groove Clearance
 0.051-0.203 mm 0.002-0.008 in
  • Production Gap
 0.249-0.759 mm 0.0098-0.0299 in
  • Service Limit Gap
 0.373-1.138 mm 0.015-0.045 in
Piston Pin
  • Diameter
 26.416-26.419 mm 1.0400-1.0401 in
  • Fit in Connecting Rod
 0.049-0.020 mm
Interference		 0.00019-0.0007 in
Interference
Crankshaft
  • Crankshaft Main Journal Runout - Production
 0.0380 mm
(max.)		 0.0015 in
(max.)
  • Crankshaft Main Journal Runout - Service
 0.0510 mm
(max.)		 0.0020 in
(max.)
  • Crankshaft Journal Diameter #1, #2, #3, #4, #5
 69.805-69.822 mm 2.7482-2.7489 in
  • Crankshaft Journal Taper Production
 0.0102 mm
(max.)		 0.0004 in
  • Crankshaft Journal Out-of-Round Production
 0.0102 mm
(max.)		 0.0004 in
  • Crankshaft Bearing Clearance #1, #2, #3, #4 Production
 0.022-0.052 mm 0.0008-0.0020 in
  • Crankshaft Bearing Clearance #5 Production
 0.035-0.067 mm 0.0014-0.0026 in
  • Crankshaft Bearing Clearance #1, #2, #3, #4 Service Limit
 0.022-0.089 mm 0.0008-0.0035 in
  • Crankshaft Bearing Clearance #5 Service Limit
 0.035-0.102 mm 0.0014-0.0040 in
  • Crankshaft End Play
 0.127-0.279 mm 0.0050-0.0110 in
  • Crankpin Diameter
 55.854-55.870 mm 2.1990-2.1996 in
  • Crankpin Taper Production
 0.0102 mm
(max.)		 0.0004 in
  • Crankpin Out-of-Round Production
 0.0102 mm
(max.)		 0.0004 in
  • Rod Bearing Clearance Production
 0.021-0.064 mm 0.0008-0.0025 in
  • Rod Bearing Clearance Service Limit
 0.021-0.081 mm 0.0008-0.0032 in
  • Connecting Rod Side Clearance
 0.384-0.686 mm 0.0151-0.0270 in
Camshaft
  • Camshaft Runout - Production
 0.051 mm
(Maximum)		 0.002 in
(Maximum)
  • Camshaft Runout - Service
 0.076 mm 0.003 in
  • Lobe Lift Intake
 6.924-7.026 mm 0.2726-0.2766 in
  • Lobe Lift Exhaust
 6.973-7.075 mm 0.2745-0.2785 in
  • Journal Diameter
 49.4720-49.5220 mm 1.9477-1.9497 in
  • Camshaft Bearing Inside Diameter
 49.5480-49.5730 mm 1.9507-1.9517 in
Valve System
  • Lifter
 Hydraulic, Roller Followers
  • Rocker Arm Ratio
 1.70:1
  • Valve Lash Intake
 Net Lash
  • Valve Lash Exhaust
 Net Lash
  • Face Angle (Intake/Exhaust)
 45 degrees
  • Seat Angle (Intake/Exhaust)
 46 degrees
  • Seat Runout (Intake/Exhaust)
 0.0500 mm
(Maximum)		 0.002 in
(Maximum)
  • Seat Width Intake
 0.800-1.200 mm 0.030-0.060 in
  • Seat Width Exhaust
 1.651-2.159 mm 0.060-0.095 in
  • Stem Clearance Production Intake
 0.025-0.074 mm 0.0010-0.0029 in
  • Stem Clearance Production Exhaust
 0.030-0.079 mm 0.0012-0.0031 in
  • Stem Clearance Service Intake
 0.025-0.088 mm 0.0010-0.0034 in
  • Stem Clearance Service Exhaust
 0.030-0.091 mm 0.0012-0.0036 in
  • Valve Spring Pressure Closed
 381-419 N @ 45.923 mm 86-94 lb @ 1.808 in
  • Valve Spring Pressure Open
 962-1058 N @ 33.985 mm 216-236 lb @ 1.338 in
  • Valve Spring Installed Height
 45.923-46.685 mm 1.808-1.838 in
  • Valve Spring Free Length
 56.35 mm 2.218 in
  • Valve Head Diameter - Intake
 55.63 mm 2.19 in
  • Valve Head Diameter - Exhaust
 43.69 mm 1.72 in
  • Valve Stem Diameter - Intake
 9.436-9.454 mm 0.3715-0.3722 in
  • Valve Stem Diameter - Exhaust
 9.431-9.449 mm 0.3713-0.3720 in
  • Maximum Valve Spring Installed Height Shim (Service Only)
 0.726 mm 0.030 in
  • Maximum Valve Spring Tension Shim (Service Only)
 0.726 mm 0.030 in
  • Maximum Combined Valve Spring Installed Height and Valve Spring Tension Shim (Service Only - Shim Placed Under Valve Rotator Only)
 1.524 mm 0.060 in
RENDER: 1.0x

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  • • 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.