1EVLC7 Posted August 14, 2007 Share Posted August 14, 2007 Engine Mechanical Specifications (7.0L) 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 RPM165 kPa at 4,000 engine RPM 6 psig at 1,000 engine RPM18 psig at 2,000 engine RPM24 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 -------------------------------------------------------------------------------- Link to comment Share on other sites More sharing options...
Grayeagle Posted August 14, 2007 Share Posted August 14, 2007 .595 x .590 lift at the valve .. no wonder they run so good That's just an amazing cam profile for a production engine.-Frank Link to comment Share on other sites More sharing options...
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