Engine Mechanical Specifications. Pontiac G6 2007

For 1990-2009 cars only

Makes 🢒 Pontiac 🢒 2007 🢒 G6 🢒 Transmission/Transaxle 🢒 Automatic Transaxle - 4T45-E 🢒 Engine Mechanical Specifications

Application	Specification
Application	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	50.749-50.800 mm	1.997-1.999 in
Gear Pocket - Depth	26.274-26.332 mm	1.034-1.036 in
Gear Pocket - Diameter	50.902-50.952 mm	2.004-2.005 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