Unit Repair
| General Data | Engine Type | V-8 |
| Displacement | 496 CID | |
| RPO | L18 | |
| VIN C/K//C3500HD | G | |
| VIN Medium Duty | E | |
| Bore | 4.250 inch | |
| Stoke | 4.370 inch | |
| Compression Ratio | 9.1:1 | |
| Firing Order | 1-8-7-2-6-5-4-3 | |
| Spark Plug Gap | 0.060 inch | |
| Cylinder Head | Surface Flatness | 0.002 inch |
| Maximum cylinder head block deck resurfacing | 0.012 in. | |
| Exhaust Manifold | Surface flatness | 0.010 inch |
| Lubrication System | Oil capacity without filter change (5.7L) | 6.0 Quarts |
| With Filter change (6.1 L) | 6.5 Quarts | |
| Oil Pressure (Minimum) | 5 psi@ 1,000 RPM | |
| Oil Pressure (Minimum) | 10 psi @ 2,000 RPM | |
| Oil filter system | Full Flow | |
| Oil Pump Type | Gear Driven | |
| Oil Type | 5W30 | |
| Oil Filter Type | PF454 | |
| Cylinder Bore | Diameter-Production | 4.2500 - 4.2507 inch |
| Diameter-Service | 4.2496 - 4.2516 inch | |
| Out-of-Round Production Maximum Minus Minimum Bore Diameter | 0.0007 inch (maximum) | |
| Out-of-Round Service Maximum Minus Minimum Bore Diameter | 0.002 inch (maximum) | |
| Taper Production | 0.0007 inch (maximum) | |
| Taper Service-Thrust Axis | 0.002 inch (maximum) | |
| Taper Service - Pin Axis | 0.002 inch (maximum) | |
| Engine Block (Production Specifications) | Main Bearing Bore Diameter | 2.9372 - 2.9379 inch |
| Lifter Bore Diameter | 0.843 - 0.844 inch | |
| Deck Height from Crankshaft Bore | 10.231 - 10.241 inch | |
| Head Deck Surface Flatness (entire face) | 0.004 inch | |
| Head Deck Surface Flatness within 150 mm (6 inch) | 0.002 inch | |
| Piston | Piston Diameter (Coated Piston) | Not Measurable |
| Clearance Production | Interference Fit (coated piston) | |
| Piston Ring Compression | Top Groove Clearance | 0.0012 - 0.0029 inch |
| Second Groove Clearance | 0.0012 - 0.0029 inch | |
| Top Ring Production Gap | 0.012 - 0.018 inch | |
| Top Ring Service Limit Gap | 0.018 - 0.027 inch | |
| Second Ring Production Gap | 0.017 - 0.025 inch | |
| Second Ring Service Limit Gap | 0.026 - 0.039 inch | |
| Piston Ring Oil Control | Ring Groove Clearance | 0.002 - 0.008 inch |
| Production Gap | 0.0098 - 0.0299 inch | |
| Service Limit Gap | 0.015 - 0.045 inch | |
| Piston Pin | Diameter | 1.0400 - 1.0401 inch |
| Fit in Connecting Rod | 0.00019 - 0.0007 inch Interference | |
| Crankshaft | Main Journal Runout - Production | 0.0015 inch (MAX) |
| Crankshaft Main Journal Runout - Service | 0.0020 inch (maximum) | |
| Crankshaft Journal Diameter #1, #2, #3, #4, #5 | 2.7482 - 2.7489 inch | |
| Crankshaft Journal Taper Production | 0.0004 inch (maximum) | |
| Crankshaft Journal Out-of-Round Production | 0.0004 inch (maximum) | |
| Crankshaft Bearing Clearance #1, #2, #3, #4 Production | 0.0008 - 0.0020 inch | |
| Crankshaft Bearing Clearance #5 Production | 0.0014 - 0.0026 inch | |
| Crankshaft Bearing Clearance #1, #2, #3, #4 Service Limit | 0.0008 - 0.0035 inch | |
| Crankshaft Bearing Clearance #5 Service Limit | 0.0014 - 0.0040 inch | |
| Crankshaft End Play | 0.0050 - 0.0110 inch | |
| Crankpin Diameter | 2.1990 - 2.1996 inch | |
| Crankpin Taper Production | 0.0004 inch (maximum) | |
| Crankpin Out-of-Round Production | 0.0004 inch (maximum) | |
| Rod Bearing Clearance Production | 0.0008 - 0.0025 inch | |
| Rod Bearing Clearance Service Limit | 0.0008 - 0.0032 inch | |
| Connecting Rod Side Clearance | 0.0151 - 0.0270 inch | |
| Camshaft Camshaft | Runout - Production | 0.002 inch (maximum) |
| Camshaft Runout - Service | 0.003 inch | |
| Lobe Lift Intake | 0.2726 - 0.2766 inch | |
| Lobe Lift Exhaust | 0.2745 - 0.2785 inch | |
| Journal Diameter | 1.9477 - 1.9497 inch | |
| Camshaft Bearing Inside Diameter | 1.9507 - 1.9517 inch | |
| Valve System | Lifter | Hydraulic, Roller Followers |
| Rocker Arm Ratio | 1.70:1 | |
| Valve Lash Intake | Net Lash | |
| Valve Lash Exhaust | Net Lash | |
| Face Angle (Intake/Exhaust) | 45° | |
| Seat Angle (Intake/Exhaust) | 46° | |
| Seat Runout (Intake/Exhaust) | 0.002 inch (maximum) | |
| Seat Width Intake | 0.030 - 0.060 inch | |
| Seat Width Exhaust | 0.060 - 0.095 inch | |
| Stem Clearance Production Intake | 0.0010 - 0.0029 inch | |
| Stem Clearance Production Exhaust | 0.0012 - 0.0031 inch | |
| Stem Clearance Service Intake | 0.0010 - 0.0034 inch | |
| Stem Clearance Service Exhaust | 0.0012 - 0.0036 inch | |
| Valve Spring Pressure Closed | 86 - 94 lbs. @ 1.808 inch | |
| Valve Spring Pressure Open | 216 - 235 lbs. @ 1.338 inch | |
| Valve Spring Installed Height | 1.808 - 1.838 inch | |
| Valve Spring Free Length | 2.218 inch | |
| Valve Head Diameter - Intake | 2.19 inch | |
| Valve Head Diameter - Exhaust | 1.72 inch | |
| Valve Stem Diameter - Intake | 0.3715 - 0.3722 inch | |
| Valve Stem Diameter - Exhaust | 0.3713 - 0.3720 inch | |
| Maximum Valve Spring Installed Height Shim (Service Only) | 0.030 inch | |
| Maximum Valve Spring Tension Shim (Service Only) | 0.030 inch | |
| Maximum Combined Valve Spring Installed Height and Valve Spring Tension Shim (Service Only - Shim Placed Under Valve Rotator Only) | 0.060 inch |