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Home >> Chevrolet >> 2007 >> Corvette Z06 >> Repair and Diagnosis >> Engine Mechanical >> Engine Mechanical - 7.0L >> Specifications >> Engine Mechanical Specifications

Engine Mechanical Specifications

Engine Mechanical Specifications

Application Specification
Metric English
General
  • Engine Type
 V8
  • Displacement
 7.0L 427 CID
  • RPO
 LS7
  • VIN
 E
  • Bore
 104.766-104.784 mm 4.125-4.125 in
  • Stroke
 101.6 mm 4.0 in
  • Compression Ratio
 11.0:1
  • Firing Order
 1-8-7-2-6-5-4-3
  • Spark Plug Gap
 1.02 mm 0.04 in
Block
  • Camshaft Bearing Bore 1 and 5 Diameter
 59.58-59.63 mm 2.345-2.347 in
  • Camshaft Bearing Bore 2 and 4 Diameter
 59.08-59.13 mm 2.325-2.327 in
  • Camshaft Bearing Bore 3 Diameter
 58.58-58.63 mm 2.306-2.308 in
  • Crankshaft Main Bearing Bore Diameter
 69.871-69.889 mm 2.75-2.751 in
  • Crankshaft Main Bearing Bore Out-of-Round
 0.006 mm 0.0002 in
  • Cylinder Bore Diameter
 104.766-104.784 mm 4.125-4.125 in
  • Cylinder Head Deck Height - Measuring from the Centerline of Crankshaft to the Deck Face
 234.57-234.82 mm 9.235-9.245 in
  • Cylinder Head Deck Surface Flatness - Measured within a 152.4 mm (6.0 in) Area
 0.11 mm 0.004 in
  • Cylinder Head Deck Surface Flatness - Measuring the Overall Length of the Block Deck
 0.22 mm 0.008 in
  • Valve Lifter Bore Diameter
 21.417-21.443 mm 0.843-0.844 in
Camshaft
  • Camshaft End Play
 0.025-0.305 mm 0.001-0.012 in
  • Camshaft Journal Diameter
 54.99-55.04 mm 2.164-2.166 in
  • Camshaft Journal Out-of-Round
 0.008 mm 0.0003 in
  • Camshaft Lobe Lift - Intake
 8.4 mm 0.331 in
  • Camshaft Lobe Lift - Exhaust
 8.34 mm 0.328 in
  • Camshaft Runout - Measured at the Intermediate Journals
 0.05 mm 0.002 in
Connecting Rod
  • Connecting Rod Bearing Clearance - Production
 0.023-0.065 mm 0.0009-0.0025 in
  • Connecting Rod Bearing Clearance - Service
 0.023-0.076 mm 0.0009-0.003 in
  • Connecting Rod Bore Diameter - Bearing End
 56.505-56.525 mm 2.224-2.225 in
  • Connecting Rod Bore Diameter - Pin End
 23.511-23.519 mm 0.926-0.926 in
  • Connecting Rod Bore Out-of-Round - Bearing End - Production
 0.004-0.008 mm 0.00015-0.0003 in
  • Connecting Rod Bore Out-of-Round - Bearing End - Service
 0.004-0.008 mm 0.00015-0.0003 in
  • Connecting Rod Side Clearance
 0.11-0.51 mm 0.00433-0.02 in
Crankshaft
  • Connecting Rod Journal Diameter - Production
 53.318-53.338 mm 2.0991-2.0999 in
  • Connecting Rod Journal Diameter - Service
 53.308 mm 2.0987 in
  • Connecting Rod Journal Out-of-Round - Production
 0.005 mm 0.0002 in
  • Connecting Rod Journal Out-of-Round - Service
 0.01 mm 0.0004 in
  • Connecting Rod Journal Taper - Maximum for 1/2 of Journal Length - Production
 0.005 mm 0.0002 in
  • Connecting Rod Journal Taper - Maximum for 1/2 of Journal Length - Service
 0.02 mm 0.00078 in
  • Crankshaft End Play
 0.04-0.2 mm 0.0015-0.0078 in
  • Crankshaft Main Bearing Clearance - Production
 0.02-0.052 mm 0.0008-0.0021 in
  • Crankshaft Main Bearing Clearance - Service
 0.02-0.065 mm 0.0008-0.0025 in
  • Crankshaft Main Journal Diameter - Production
 64.992-65.008 mm 2.558-2.559 in
  • Crankshaft Main Journal Diameter - Service
 64.992 mm 2.558 in
  • Crankshaft Main Journal Out-of-Round - Production
 0.003 mm 0.000118 in
  • Crankshaft Main Journal Out-of-Round - Service
 0.008 mm 0.0003 in
  • Crankshaft Main Journal Taper - Production
 0.01 mm 0.0004 in
  • Crankshaft Main Journal Taper - Service
 0.02 mm 0.00078 in
  • Crankshaft Rear Flange Runout
 0.05 mm 0.002 in
  • Crankshaft Reluctor Ring Runout - Measured 1.0 mm (0.04 in) Below Tooth Diameter
 0.7 mm 0.028 in
  • Crankshaft Thrust Surface - Production
 26.14-26.22 mm 1.029-1.0315 in
  • Crankshaft Thrust Surface - Service
 26.22 mm 1.0315 in
  • Crankshaft Thrust Surface Runout
 0.025 mm 0.001 in
Cylinder Head
  • Cylinder Head Height/Thickness - Measured from the Cylinder Head Deck to the Valve Rocker Arm Cover Seal Surface
 127.9 mm 5.035 in
  • Surface Flatness - Block Deck - Measured within a 152.4 mm (6.0 in) Area
 0.08 mm 0.003 in
  • Surface Flatness - Block Deck - Measuring the Overall Length of the Cylinder Head
 0.1 mm 0.004 in
  • Surface Flatness - Exhaust Manifold Deck
 0.13 mm 0.005 in
  • Surface Flatness - Intake Manifold Deck
 0.08 mm 0.0031 in
  • Valve Guide Installed Height - Measured from the Spring Seat Surface to the Top of the Guide
 17.32 mm 0.682 in
Intake Manifold
  • Surface Flatness - Measured at Gasket Sealing Surfaces and Measured Within a 200 mm (7.87 in) Area that Includes 2 Runner Port Openings
 0.3 mm 0.118 in
Lubrication System
  • Oil Capacity - with Filter
 7.57 liters 8.0 quarts
  • Oil Capacity - without Filter
 7.10 liters 7.5 quarts
  • Oil Pressure - Minimum at 100°C (212°F)
 41 kPa at 1,000 engine RPM
124 kPa at 2,000 engine RPM
165 kPa at 4,000 engine RPM		 6 psig at 1,000 engine RPM
18 psig at 2,000 engine RPM
24 psig at 4,000 engine RPM
Oil Pan
  • Front Cover Alignment - at Oil Pan Surface
 0.0-0.5 mm 0.0-0.02 in
  • Oil Pan Alignment - to Rear of Engine Block at Transmission Bell Housing Mounting Surface
 0.0-0.1 mm 0.0-0.004 in
  • Oil Pump Alignment - at Oil Pan Surface
 0.0-0.1 mm 0.0-0.004 in
  • Crankshaft Rear Oil Seal Housing Alignment - at Oil Pan Surface
 0.0-0.5 mm 0.0-0.02 in
Piston Rings
  • Piston Ring End Gap - First Compression Ring - Measured in Cylinder Bore - Production
 0.22-0.47 mm 0.0087-0.0185 in
  • Piston Ring End Gap - First Compression Ring - Measured in Cylinder Bore - Service
 0.22-0.47 mm 0.0087-0.0185 in
  • Piston Ring End Gap - Second Compression Ring - Measured in Cylinder Bore - Production
 0.40-0.66 mm 0.0157-0.0259 in
  • Piston Ring End Gap - Second Compression Ring - Measured in Cylinder Bore - Service
 0.40-0.66 mm 0.0157-0.0259 in
  • Piston Ring End Gap - Oil Control Ring - Measured in Cylinder Bore - Production
 0.25-0.76 mm 0.0098-0.0299 in
  • Piston Ring End Gap - Oil Control Ring - Measured in Cylinder Bore - Service
 0.25-0.76 mm 0.0098-0.0299 in
  • Piston Ring to Groove Clearance - First Compression Ring - Production
 0.030-0.10 mm 0.0012-0.0040 in
  • Piston Ring to Groove Clearance - First Compression Ring - Service
 0.030-0.10 mm 0.0012-0.0040 in
  • Piston Ring to Groove Clearance - Second Compression Ring - Production
 0.035-0.078 mm 0.0014-0.0031 in
  • Piston Ring to Groove Clearance - Second Compression Ring - Service
 0.035-0.078 mm 0.0014-0.0031 in
  • Piston Ring to Groove Clearance - Oil Control Ring - Production
 0.013-0.201 mm 0.0005-0.0079 in
  • Piston Ring to Groove Clearance - Oil Control Ring - Service
 0.013-0.201 mm 0.0005-0.0079 in
Pistons and Pins
  • Pin - Piston Pin Clearance to Piston Pin Bore - Production
 0.008-0.023 mm 0.0003-0.0009 in
  • Pin - Piston Pin Clearance to Piston Pin Bore - Service
 0.008-0.023 mm 0.0003-0.0009 in
  • Pin - Piston Pin Diameter
 23.497-23.503 mm 0.925-0.925 in
  • Pin - Piston Pin Fit in Connecting Rod Bore - Production
 0.007-0.02 mm 0.00027-0.00078 in
  • Pin - Piston Pin Fit in Connecting Rod Bore - Service
 0.007-0.0022 mm 0.00027-0.00086 in
  • Piston - Piston Diameter - Measured Over Skirt Coating
 104.758-104.792 mm 4.124-4.126 in
  • Piston - Piston to Bore Clearance
 -0.026 to +0.026 mm -0.001 to +0.001 in
Valve System
  • Valves - Face Angle
 45 degrees
  • Valves - Face Width
 1.754-2.254 mm 0.069-0.089 in
  • Valves - Lash
 Net Lash - No Adjustment
  • Valves - Lift - Intake
 15.11 mm 0.595 in
  • Valves - Lift - Exhaust
 15.01 mm 0.590 in
  • Valve Seat - Angle
 45 degrees
  • Valve Seat - Runout
 0.05 mm 0.002 in
  • Valve Seat - Width - Exhaust
 1.7-2.0 mm 0.067-0.079 in
  • Valve Seat - Width - Intake
 1.25-1.55 mm 0.049-0.061 in
  • Valves - Stem Diameter - Intake
 7.958-7.9735 mm 0.313-0.314 in
  • Valves - Stem Diameter - Exhaust
 7.956-7.976 mm 0.313-0.314 in
  • Valves - Stem-to-Guide Clearance - Production - Intake
 0.028-0.063 mm 0.001-0.0024 in
  • Valves - Stem-to-Guide Clearance - Service - Intake
 0.093 mm 0.0037 in
  • Valves - Stem-to-Guide Clearance - Production - Exhaust
 0.025-0.066 mm 0.001-0.0026 in
  • Valves - Stem-to-Guide Clearance - Service - Exhaust
 0.093 mm 0.0037 in
  • Rocker Arms - Rocker Arm Ratio
 1.80:1
  • Valve Springs - Free Length
 58.8 mm 2.313 in
  • Valve Springs - Installed Height
 49.75 mm 1.959 in
  • Valve Springs - Load - Closed
 450 N at 49.75 mm 101 lb at 1.96 in
  • Valve Springs - Load - Open
 1380 N at 34.75 mm 310 lb at 1.37 in
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