Cylinder Block Assembly: Specifications

Block
Engine Type V8
Displacement 6.2L 376 CID
RPO LS3
VIN W
Bore 103.241-103.259 mm 4.0065-4.0065 in
Stroke 92.0 mm 3.622 in
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 103.241-103.259 mm 4.0065-4.0065 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

Cylinder Out of Round
Measure the bore at points (A, B and C), measure at these points both in line with and perpendicular to the crankshaft centre line.
Point (A) is 9 mm from the cylinder head surfaces
Point (B) is 57 mm from the cylinder head surfaces
Point (C) is 127 mm from the cylinder head surfaces
Calculate the difference between the two measurements at each location, the results will indicate any out of round bore condition.

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 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

Piston Rings
Piston Ring End Gap - First Compression Ring - Measured in Cylinder Bore - Production 0.17-0.38 mm 0.0067-0.0150 in
Piston Ring End Gap - First Compression Ring - Measured in Cylinder Bore - Service 0.17-0.44 mm 0.0067-0.0173 in
Piston Ring End Gap - Second Compression Ring - Measured in Cylinder Bore - Production 0.32-0.63 mm 0.0126-0.0248 in
Piston Ring End Gap - Second Compression Ring - Measured in Cylinder Bore - Service 0.32-0.69 mm 0.0126-0.0272 in
Piston Ring End Gap - Oil Control Ring - Measured in Cylinder Bore - Production 0.22-0.79 mm 0.0086-0.0311 in
Piston Ring End Gap - Oil Control Ring - Measured in Cylinder Bore - Service 0.22-0.85 mm 0.0086-0.0335 in
Piston Ring to Groove Clearance - First Compression Ring - Production 0.030-0.083 mm 0.0012-0.0033 in
Piston Ring to Groove Clearance - First Compression Ring - Service 0.030-0.083 mm 0.0012-0.0033 in
Piston Ring to Groove Clearance - Second Compression Ring - Production 0.040-0.083 mm 0.0016-0.0033 in
Piston Ring to Groove Clearance - Second Compression Ring - Service 0.040-0.083 mm 0.0016-0.0033 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 0.002-0.01 mm 0.00008-0.0004 in
Pin - Piston Pin Clearance to Piston Pin Bore - Service 0.002-0.015 mm 0.00008-0.0006 in
Pin - Piston Pin Diameter 23.952-23.955 mm 0.9430-0.9431 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 0.007-0.022 mm 0.00027-0.00086 in
Piston - Piston Diameter - Measured Over Skirt Coating 103.258-103.289 mm 4.0653-4.0665 in
Piston - Piston to Bore Clearance - Production -0.048 to +0.001 mm -0.0019 to +0.000 in
Piston - Piston to Bore Clearance - Service Limit with Skirt Coating Worn Off 0.055 mm 0.0022 in





Crankshaft Bearing Cap M8 Bolts 25 Nm (18 lb ft)
Crankshaft Bearing Cap M10 Bolts - First Pass in Sequence 20 Nm (15 lb ft)
Crankshaft Bearing Cap M10 Bolts - Final Pass in Sequence 80 degrees
Crankshaft Bearing Cap M10 Studs - First Pass in Sequence 20 Nm (15 lb ft)
Crankshaft Bearing Cap M10 Studs - Final Pass in Sequence 51 degrees

Crankshaft Balancer Bolt - First Pass 150 Nm (111 lb ft)
Crankshaft Balancer Bolt - Second Pass Loosen 360 degrees
Crankshaft Balancer Bolt - Third Pass 50 Nm (37 lb ft)