Engine Mechanical Specifications

2006 Chevrolet Cobalt SS, 4D Sedan, StandardSECTION Engine Mechanical Specifications
WARNING: This page is about a different car, the 2007 Chevrolet Monte Carlo and 2007 Chevrolet Impala. However, it is still accessible from the selected car via links, so may be relevant.
Engine Mechanical Specifications

Application Specification
Metric English
General Data
  • Engine Type
60 degree V-6
  • Displacement
3.5L 214 cu in
  • RPO
LZ4 (LZE-E85)
  • VIN
N (K-E85)
  • Bore
99 mm 3.90 in
  • Stroke
76 mm 2.99 in
  • Compression Ratio
9.8:1
  • Firing Order
123456
  • Spark Plug Gap
1.00 mm 0.040 in
Block
  • Camshaft Bearing Bore Diameter - Front and Rear
51.03-51.08 mm 2.009-2.011 in
  • Camshaft Bearing Bore Diameter - Middle #2, #3
50.77-50.82 mm 1.999-2.001 in
  • Crankshaft Main Bearing Bore Diameter
72.1535-72.0695 mm 2.840-2.841 in
  • Crankshaft Main Bearing Bore Out-of-Round
0.008 mm 0.00031 in
  • Cylinder Bore Diameter
99.000-99.018 mm 3.897-3.898 in
  • Cylinder Bore Out-of-Round - Diameter - Production
0.020 mm 0.0008 in
  • Cylinder Bore Out-of-Round - Diameter - Service
0.025 mm 0.001 in
  • Cylinder Bore Taper - Production
0.020 mm 0.0008 in
  • Cylinder Bore Taper - Service
0.025 mm 0.001 in
  • Cylinder Head Deck Height
224 mm 8.818 in
  • Cylinder Head Deck Surface Flatness
0.05 mm per 152 mm 0.0019 in per 6 in
  • Valve Lifter Bore Diameter
21.417-21.455 mm 0.843-0.844 in
Camshaft
  • Camshaft Bearing Inside Diameter
51.500-51.525 mm 2.028-2.029 in
  • Camshaft Journal Diameter
51.415-51.440 mm 2.024-2.025 in
  • Camshaft Journal Out-of-Round
0.025 mm 0.001 in
  • Camshaft Lobe Lift - Exhaust
6.9263 mm 0.2727 in
  • Camshaft Lobe Lift - Intake
6.9263 mm 0.2727 in
Cooling System
  • Thermostat Full Open Temperature
195 degrees
Connecting Rod
  • Connecting Rod Bearing Clearance
0.18-0.062 mm 0.0007-0.017 in
  • Connecting Rod Bore Diameter
60.322-60.338 mm 2.375-2.376 in
  • Connecting Rod Bore Out-of-Round
0.006 mm 0.00023 in
  • Connecting Rod Length - Center to Center
150 mm 5.9 in
  • Connecting Rod Side Clearance
0.200-0.241 mm 0.008-0.009 in
Crankshaft
  • Connecting Rod Journal Diameter
57.122-57.138 mm 2.2489-2.2495 in
  • Connecting Rod Journal Out-of-Round
0.005 mm 0.0002 in
  • Connecting Rod Journal Taper
0.005 mm 0.0002 in
  • Connecting Rod Journal Width
21.92-22.08 mm 0.863-0.869 in
  • Crankshaft End Play
0.060-0.210 mm 0.0024-0.0083 in
  • Crankshaft Main Bearing Journal Width
23.9-24.1 mm 0.941-0.949 in
  • Crankshaft Main Bearing Clearance - Except #3
0.019-0.064 mm 0.0008-0.0025 in
  • Crankshaft Main Bearing Clearance - #3 Thrust Bearing
0.032-0.077 mm 0.0012-0.0030 in
  • Crankshaft Main Journal Diameter
67.239-67.257 mm 2.6473-2.6483 in
  • Crankshaft Main Journal Out-of-Round
0.005 mm 0.0002 in
  • Crankshaft Main Journal Taper
0.005 mm 0.0002 in
  • Crankshaft Rear Flange Runout
0.04 mm 0.0016 in
Cylinder Head
  • Combustion Chamber Depth - at Measurement Point
2.2 mm 0.087 in
  • Surface Finish - Maximum
2.8 RA
  • Surface Flatness - Block Deck
0.08 mm Per 152 mm 0.003 in Per 6 in
  • Surface Flatness - Exhaust Manifold Deck
0.1 mm 0.004 in
  • Surface Flatness - Intake Manifold Deck
0.1 mm 0.004 in
  • Valve Guide Bore - Exhaust
8.01 mm 0.315 in
  • Valve Guide Bore - Intake
8.01 mm 0.315 in
  • Valve Guide Installed Height
16.6 mm 0.654 in
Lubrication System
  • Oil Capacity - with Filter
3.8 liter 4.0 quarts
  • Oil Capacity - without Filter
3.3 liter 3.5 quarts
  • Oil Pressure - @ 1850 RPM
207-310 kPa 30-45 PSI
Oil Pump
  • Gear Diameter
38.05-38.10 mm 1.498-1.500 in
  • Gear Pocket - Depth
30.52-30.58 mm 1.202-1.204 in
  • Gear Pocket - Diameter
38.176-38.226 mm 1.503-1.505 in
  • Gears Lash
0.094-0.195 mm 0.0037-0.0077 in
  • Relief Valve-to-Bore Clearance
0.038-0.089 mm 0.0015-0.0035 in
Piston Ring End Gap
  • First Compression Ring
0.18-0.39 mm 0.007-0.015 in
  • Second Compression Ring
0.48-0.74 mm 0.019-0.029 in
  • Oil Control Ring
0.25-0.74 mm 0.010-0.029 in
Piston Ring to Groove Clearance
  • First Compression Ring
0.03-0.076 mm 0.001-0.003 in
  • Second Compression Ring
0.04-0.078 mm 0.002-0.003 in
  • Oil Control Ring
0.09 mm 0.004 in
Piston Ring Thickness
  • First Compression Ring
1.164-1.190 mm 0.046-0.047 in
  • Second Compression Ring
1.472-1.490 mm 0.058 in
  • Oil Control Ring - Maximum
2.440 mm 0.096 in
Piston
  • Piston Diameter - production
98.970-99.008 mm 3.896-3.897 in
  • Piston Diameter - service limit
98.950 mm 3.895 in
  • Piston Pin Bore Diameter
24.008-24.013 mm 0.9452-0.9454 in
  • Piston Ring Groove Width
1.23-1.255 mm 0.048-0.049 in
  • Piston to Bore Clearance - production
-0.029 to 0.029 mm -0.0011 to 0.011 in
  • Piston to Bore Clearance - service limit - Maximum
0.080 mm 0.003 in
Pin
  • Piston Pin Clearance to Connecting Rod Bore - Press Fit
-0.022 to -0.044 mm -0.0008 to -0.0017 in
  • Piston Pin Clearance to Piston Pin Bore
0.008-0.016 mm 0.0003-0.0006 in
  • Piston Pin Diameter
23.997-24.000 mm 0.9447-0.9448 in
  • Piston Pin Length
59.87-60.13 mm 2.35-2.36 in
Valves
  • Valve Face Angle
45 degrees
  • Valve Seat Angle
46 degrees
  • Valve Seat Depth - Exhaust - from deck face
8.9-9.1 mm 0.350-0.358 in
  • Valve Seat Depth - Intake - from deck face
7.9-8.1 mm 0.311-0.318 in
  • Valve Seat Width - Exhaust
1.70-2.0 mm 0.067-0.079 in
  • Valve Seat Width - Intake
1.55-1.80 mm 0.061-0.071 in
  • Valve Stem-to-Guide Clearance
0.026-0.068 mm 0.0010-0.0027 in
Valve Lifters/Push Rods
  • Push Rod Length - Intake
146.0 mm 5.75 in
  • Push Rod Length - Exhaust
152.5 mm 6.0 in
Valve Springs
  • Valve Spring Free Length
48.5 mm 1.89 in
  • Valve Spring Installed Height
43.2 mm 1.701 in
  • Valve Spring Load - Closed
320 N 43.2 mm 75 lb 1.701 in
  • Valve Spring Load - Open
1036 N 32 mm 230 lb 1.260 in
  • Valve Spring Total Number of Coils
7.10
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:

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