| Table 1: | Engine Block Specifications |
| Table 2: | Cylinder Head Specifications |
Application | Service Limit | |
|---|---|---|
Metric | English | |
Cylinder Bore - Select Fit Designation Stamped on Block | ||
| 85.975-85.985 mm | 3.3848-3.3852 in |
| 85.985-85.995 mm | 3.3852-3.3856 in |
| 85.995-86.005 mm | 3.3856-3.3860 in |
| 86.005-86.015 mm | 3.3860-3.3864 in |
| 86.015-86.025 mm | 3.3864-3.3868 in |
| 86.465-86.475 mm | 3.4041-3.4045 in |
| 0.065 mm | 0.0003 in |
| 0.0065 mm | 0.0003 in |
Piston - Select Fit Designation Stamped on Top of Piston | ||
| 85.940-85.950 mm | 3.3834-3.3838 in |
| 85.950-85.960 mm | 3.3838-3.3842 in |
| 85.960-85.970 mm | 3.3842-3.3846 in |
| 85.970-85.980 mm | 3.3846-3.3850 in |
| 85.980-85.990 mm | 3.3850-3.3854 in |
| 86.430-86.440 mm | 3.4027-3.4031 in |
| 0.025-0.045 mm | 0.0010-0.0018 in |
| 21 mm | 0.8267 in |
| 0.003-0.008 mm | 0.0001-0.0003 in |
Piston Ring - Compression | ||
| 1.5 mm | 0.0590 in |
| 0.02-0.04 mm | 0.0008-0.0015 in |
| 0.30-0.50 mm | 0.0118-0.0196 in |
Piston Ring - Oil | ||
| 3.0 mm | 0.1181 in |
| 0.01-0.03 mm | 0.0004-0.0012 in |
| 0.40-1.40 mm | 0.0157-0.0551 in |
Piston Pin | ||
| 21 mm | 0.8267 in |
| 0.001-0.015 mm | 0.0001-0.0003 in |
Crankshaft - Main Journal | ||
| 67.980-67.988 mm | 2.6763-2.6766 in |
| 67.988-67.996 mm | 2.6766-2.6770 in |
| 67.730-67.738 mm | 2.6656-2.6668 in |
| 67.738-67.746 mm | 2.668-2.6671 in |
| 67.480-67.488 mm | 2.666-2.6570 in |
| 67.488-67.496 mm | 2.6570-2.6573 in |
| 0.03 mm | 0.0012 in |
| 0.014-0.043 mm | 0.0006-0.0017 in |
| 0.010-0.76 mm | 0.0004-0.0300 in |
| 48.971-48.990 mm | 1.927-1.928 in |
| 48.721-48.740 mm | 1.918-1.919 in |
| 48.471-48.490 mm | 1.908-1.909 in |
Connecting Rod | ||
| 0.07-0.28 mm | 0.0027-0.0110 in |
| 0.013-0.061 mm | 0.0005-0.0024 in |
| 52.000-52.012 mm | 2.0472-2.0477 mm |
Measurement | Standard | Service Limit | ||
|---|---|---|---|---|
Metric | English | Metric | English | |
Compression (Hot) | ||||
250 RPM (Open Throttle) | 1310 kPa | 190 psi min | 1,241 kPa | 180 psi min |
Cylinder Leakage (Hot) | ||||
689 kPa (100 psi) Input | 69 kPa 10% max | 10 psi max | 138 kPa 15% max | 20 psi max |
Cylinder Head | ||||
Total Height | 134.0 mm | 5.276 in | 133.9-134.1 mm | 5.272-5.280 in |
Maximum Distortion (Length) | -- | -- | 0.05/100 mm | 0.0020/3.937 in |
Valve | ||||
Lifter | -- | -- | -- | -- |
Face Angle | -- | -- | -- | 45 degrees |
Seat Angle | -- | -- | -- | 45 degrees |
Seat Width | -- | -- | -- | -- |
Intake | 1.0-1.4 mm | 0.0394-0.0551 in | -- | -- |
Exhaust | 1.4-1.8 mm | 0.0551-0.0709 in | -- | -- |
Valve Length - Production | ||||
Intake | 102.1 mm | 4.016 in | -- | -- |
Exhaust | 92.25 mm | 3.632 in | -- | -- |
Valve Length - Service | ||||
Intake | 101.7 mm | 4.0039 in | -- | -- |
Exhaust | 91.8 mm | 3.6141 in | -- | -- |
Valve Stem Diameter | ||||
Standard (K) Intake | 5.955-5.970 mm | 0.2344-0.2350 in | -- | -- |
Standard (K) Exhaust | 5.945-5.960 mm | 0.2341-0.2346 in | -- | -- |
Oversize (K 1-0.075) Intake | 6.030 mm | 0.2374 in | -- | -- |
Oversize (K 1-0.075) Exhaust | 6.020 mm | 0.2370 in | -- | -- |
Valve Guide Diameter | ||||
Standard (K) | 6.000-6.012 mm | 0.2362-0.2367 in | -- | -- |
Oversize (K 1-0.075) | 6.075-6.090 mm | 0.2392-0.2398 in | -- | -- |
Valve Guide Installed Height | 13.7-14.0 mm | 0.5394-0.5512 in | -- | -- |
Stem Clearance | ||||
Intake | 0.030-0.057 mm | 0.0012-0.0022 in | -- | -- |
Exhaust | 0.040-0.067 mm | 0.0016-0.0026 in | -- | -- |
Valve Height | ||||
Intake | 39.2 mm | 1.543 in | -- | -- |
Exhaust | 39.2 mm | 1.543 in | -- | -- |
Intake and Exhaust Compressed at 252 N (56.6 lbs) | 34 mm | 1.338 in | -- | -- |
Camshaft | ||||
Exhaust Cam Lobe Lift Rise | 8.66-8.74 mm | 0.3409-0.344 in | 8.61 mm | 0.339 in min |
Lifter Body Diameter | 32.959-32.975 mm | 1.2976-1.282 in | 32.947 mm | 1.297 in min |
Lifter Body Clearance | 0.025-0.066 mm | 0.0010-0.0026 in | 0.083 mm | 0.003 in max |
Journal Diameter | 27.939-27.960 mm | 1.099-1.101 in | -- | -- |
Bearing Clearance | 0.040-0.082 mm | 0.0015-0.0020 in | -- | -- |
End Play | 0.04-0.144 mm | 0.0016-0.0057 in | -- | -- |
Spark Plug | ||||
Type | Bosch FLR-LTE, GM P/N 90541059 | -- | ||
Gap | 0.9-1.1 mm | 0.035-0.043 in | -- | -- |
Torque | -- | -- | 25 N·m | 19 lb ft |
Oil Pressure - Minimum | ||||
Engine Idle - at Normal Operating Temperature | -- | -- | 110 kPa | 16 psi |
