The Chrysler 488 Magnum is a 8.0 L (7,997 cc, 488 cu·in) natural aspirated V10 90° four-stroke liquid-cooled internal combustion gasoline engine, manufactured by Chrysler Corporation from 1994 to 2003.
It has a 101.6 mm (4 in) cylinder bore and 98.6 mm (3.88 in) piston stroke. The compression ratio rating is 8.4:1.
The 488 Magnum engine produced from 305 PS (224 kW; 300 HP) at 4,100 rpm to 314 PS (231 kW; 310 HP) at 4,100 rpm of maximum horsepower and 610 N·m (62.2 kg·m, 449.6 ft·lb) at 2,400 rpm of maximum torque.
The Chrysler 360 Magnum V8 engine features:
- Ten-cylinder V-type 90°
- Cast-iron cylinder block and heads
- Nodular iron crankshaft and camshaft
- Aluminum alloy pistons with two compression and single oil ring
- Forged steel connecting rons
- OHV design with single camshaft
- Distributor-less electronic ignition system
- Multiple-point fuel injection system
General information
| Engine Specifications | |
| Engine model | 8.0 L Magnum |
| Engine type | 4-stroke, OHV, V10 90° |
| Displacement | 8.0 L, 7,997 cm3, (488 cu·in) |
| Max. horsepower | From 305 PS (224 kW; 300 HP) at 4,100 rpm to 314 PS (231 kW; 310 HP) at 4,100 rpm |
| Max. torque | 610 N·m (62.2 kg·m, 449.6 ft·lb) at 2,400 rpm |
| Cooling system | Liquid-cooled |
| Lubricating system | Pressurized lubrication |
| Ignition system | Distributor-less electronic ignition system |
| Fuel system | Multiple-point fuel injection system |
| Fuel used | Unleaded gasoline (octane number 86 or higher) |
| Firing order: | 1-10-9-4-3-6-5-8-7-2 |
| Dimensions (L x W X H) | – |
| Dry weight | – |
Cylinder Block and Head
| Cylinder block | |
| Cylinder block alloy: | Cast-iron |
| Compression ratio: | 8.4:1 |
| Cylinder bore: | 101.6 mm (4 in) |
| Piston stroke: | 98.6 mm (3.88 in) |
| Cylinder internal diameter (standard): | 101.600-101.610 mm (4-4.0004 in) |
| Number of piston rings (compression / oil): | 2/1 |
| Connecting rod small end diameter (standard): | 24.940-24.978 mm (0.9819-0.9834 in) |
| Piston pin diameter: | 24.996-25.001 mm (0.9841-0.9843 in) |
| Side clearance (Top): | 0.074-0.097 mm (0.0029-0.0038 in) |
| Side clearance (Second): | 0.074-0.097 mm (0.0029-0.0038 in) |
| Side clearance (Oil): | 0.185-0.245 mm (0.0073-0.0096 in) |
| Ring end gap (Top): | 0.255-0.508 mm (0.01-0.02 in) |
| Ring end gap (Second): | 0.255-0.508 mm (0.01-0.02 in) |
| Ring end gap (Oil): | 0.380-1.397 mm (0.015-0.055 in) |
| Number of main bearings: | 6 |
| Crankshaft main journal diameter: | 76.187-76.213 mm (2.9995-3.0005 in) |
| Crankpin journal diameter: | 53.950-53.975 mm (2.124-2.125 in) |
| Crankshaft center distance: | 49.3 mm (1.94 in) |
| Cylinder head | |
| Cylinder head alloy: | Cast-iron |
| Valve arrangement: | OHV, Chain driven |
| Valves: | 2, (20 valves in total) |
| Intake timig: | 246° |
| Exhaust timig: | 265° |
| Valve head diameter (INTAKE): | 48.640-48.900 mm (1.915-1.9252 in) |
| Valve head diameter (EXHAUST): | 41.123-41.377 mm (1.619-1.629 in) |
| Valve length (INTAKE): | 145.190-145.820 mm (5.7161-5.7409 in) |
| Valve length (EXHAUST): | 145.540-146.180 mm (5.7299-5.7551 in) |
| Valve steam diameter (INTAKE): | 7.900-7.920 mm (0.311-0.3118 in) |
| Valve steam diameter (EXHAUST): | 7.900-7.920 mm (0.311-0.3118 in) |
| Valve spring free length (INTAKE): | 49.962 mm (1.967 in) |
| Valve spring free length (EXHAUST): | 49.962 mm (1.967 in) |
Tightening procedure and torque specs
| Main bearing beam bolts: | Step 1: 27 Nm; 2.7 kg·m; 20 ft·lb in two-three stages Step 2: 115 Nm; 11.5 kg·m; 85 ft·lb in two-three stages |
| Connecting rod bearing bolts | 61 Nm; 6.0 kg·m; 45 ft·lb |
| Cylinder head | Step 1: 68 Nm; 6.8 kg·m; 50 ft·lb Step 2: 143 Nm; 14.0 kg·m; 105 ft·lb |
| Cylinder head cover bolts | 6 Nm; 1.6 kg·m; 9.0 ft·lb |
Service Data
| Cylinder compression: | 12.0-13.3 kg/cm2, (1,170-1,310 kPa, 170-190 psi) |
| Oil system | |
| Lubrication system: | Pressurized lubrication |
| Oil type: | API: SH or SH/CD |
| Recommended oil: | SAE 10W-30 |
| Oil capacity: | With oil filter: 6.6 L (7.0 US. qt, 5.81 Imp. qt.) |
| Oil pressure: | 83-172 kPA (0.8-1.7 kg/cm3, 12-25 psi) at Idle rpm 345-414 kPA (3.5-4.2 kg/cm3, 50-60 psi) at 3,000 rpm |
| Fuel system | |
| Type: | Multiple-point fuel injection system |
| Ignition system | |
| Type: | Electronic ignition system with mechanical distributor |
| Spark plug: | Champion QC9MC4 |
| Spark plug gap: | 1.15 mm (0.045 in) |
| Spark plug torque: | 41.0 N·m (4.2 kg·m, 30.2 ft·lb) |
Applications
| Model | Years Produced |
| Dodge Ram 2500/3500 Pickup | 1994–2003 |
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