The Chrysler/Dodge 360 Magnum is a 5.9 l (5,899 cc, 360.0 cu.in.) natural aspirated V8 90° four-stroke gasoline engine from Chrysler LA/Magnum-family. This engine was manufactured from 1992 up to 2003.
The Chrysler 360 Magnum features a cast-iron block and two cast-iron heads with a single camshaft (OHV) and two valves per cylinder (16 valves in total). The Chrysler 5.9 L Magnum engine is equipped with a multi-point fuel injection system and a mechanically timed electrical ignition system with an ignition coil and mechanical distributor.
The compression ratio rating is 9.1:1. Cylinder bore and the piston stroke are 101.6 mm (4.0 in) and 90.9 mm (3.58 in), respectively.
The standard 5.9 L produced 234.0 PS (172.0 kW; 230.0 HP) at 4,000 rpm and 447 N·m (45.6 kg·m, 329.4 ft·lb) at 3,250 rpm of torque. This engine was upgraded in 1998 to 249.0 PS (183.0 kW; 245.0 HP) at 4,000 rpm and 454.0 N·m (46.3 kg·m, 334.6 ft·lb) at 3,250 rpm. The performance-oriented R/T version was rated for 249.0 PS (183.0 kW; 245.0 HP) at 4,000 rpm and 468.0 Nm (47.7 kg·m; 345.4 ft·lb).
|Engine model||Chrysler 5.9 L (360 cu in) Magnum|
|Layout||Four stroke, V8|
|Fuel type||Gasoline (petrol)|
|Displacement||5.9 L, 5,899 cc (360.0 cu in)|
|Fuel system||Multi-point Fuel Injection|
From 234.0 PS (172.0 kW; 230.0 HP) at 4,000 rpm
to 249.0 PS (183.0 kW; 245.0 HP) at 4,000 rpm
From 447 N·m (45.6 kg·m, 329.4 ft·lb) at 3,250 rpm
to 468.0 Nm (47.7 kg·m; 345.4 ft·lb) at 3,250 rpm
|Dimensions (L x W x H):||–|
The 360 Magnum engine has a cast-iron block with a five-bearings crankshaft supported system. The cylinder bore is 101.6 mm (4.00 in), piston stroke is 90.9 mm (3.58 in) and the compression ratio rating is 9.1:1. This motor has aluminum alloy pistons with two compression and one oil control rings, forged steel connecting rods, and nodular iron crankshaft. The crankshaft main journal diameter is 71.3 mm (2.80 in) and the crankpin diameter is 53.0 mm (2.08 in).
|Cylinder block alloy||Cast-iron|
|Cylinder bore:||101.6 mm (4.00 in)|
|Piston stroke:||90.9 mm (3.58 in)|
|Number of piston rings (compression / oil):||2/1|
|Number of main bearings:||5|
|Cylinder inner diameter (standard):||101.600-101.65 mm (4-4.002 in)|
|Piston skirt diameter (standard):||–|
|Piston pin outer diameter:||25.007-25.015 mm (0.9845-0.9848 in)|
|Piston ring side clearance:||Top||0.040-0.085 mm (0.0016-0.0033 in)|
|Second||0.040-0.085 mm (0.0016-0.0033 in)|
|Oil||0.050-0.210 mm (0.002-0.0083 in)|
|Piston ring end gap:||Top||0.300-0.550 mm (0.0118-0.0217 in)|
|Second||0.550-0.800 mm (0.0217-0.0315 in)|
|Oil||0.380-1.397 mm (0.015-0.055 in)|
|Connecting rod small end diameter:||24.966-24.978 mm (0.9829-0.9834 in)|
|Crankshaft main journal diameter:||71.360-71.387 mm (2.8094-2.8105 in)|
|Crankpin diameter:||53.950-53.975 mm (2.124-2.125 in)|
Main bearing cap bolts tightening procedure and torque specs:
- 115 Nm; 11.5 kg·m; 85 ft·lb in two-three stages
After securing bearing cap bolts, make sure crankshaft turns smoothly by hand.
Connecting rod cap bolts
- 61 Nm; 6.0 kg·m; 45 ft·lb
The cylinder heads are made of cats-iron. The engine has a single camshaft over-head valves. The camshaft is driven by a single timing chain. The intake valve head diameter is 47.75 mm (1.88 in), the duration is 274° the exhaust valve diameter is 41.07 mm (1.624 in), the duration is 264°. The Chrysler 360 Magnum engine is equipped with hydraulic valve tappets.
|Block head alloy||Cast-iron|
|Valve Arrangement:||OHV, chain drive|
|Head surface flatness||–|
|Valves:||16 (2 valves per cylinder)|
|Intake valve timing||274°|
|Exhaust valve timing:||264°|
|Valve head diameter:||INTAKE||47.752 mm (1.88 in)|
|EXHAUST||41.072 mm (1.617 in)|
|Valve length:||INTAKE||126.210-126.850 mm (4.9689-4.9941 in)|
|EXHAUST||126.440-127.300 mm (4.9779-5.0118 in)|
|Valve stem diameter:||INTAKE||9.449-9.474 mm (0.372-0.373 in)|
|EXHAUST||9.423-9.449 mm (0.371-0.372 in)|
|Valve spring free length:||49.962 mm (1.967 in)|
Head tightening procedure and torque specs:
- 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
- 11 Nm; 1.1 kg·m; 8.1 ft·lb
|Standard||689 kPa (100 psi)|
|Recommended engine oil||SAE: 10W-30|
|Oil type API||API: SH or SH/CD|
|Engine oil capacity (Refill capacity)||
With filter change 4.7 L (5.0 US. qt, 4.2 Imp. qt.)
Without filter change 4.3 L (4.6 US. qt, 3.8 Imp. qt.)
Idle speed: 41.4 kPA (6 psi)
3,000 rpm 207-551 kPA (30-80 psi)
|Spark plug||Champion RC12YC|
|Spark plug gap||0.9 mm (0.0354 in)|
|Spark plug tightening torque||41.0 N·m (4.2 kg·m, 30.2 ft·lb)|
|Dodge Ram Van||1992–2003|
|Dodge Ram Wagon||1992–2003|
|Jeep Grand Cherokee 5.9 Limited||1998|
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It would be nice to see the crankshaft position sensor air gap spec. Sounds crazy, I know. But my sensor is at .004 inch. That seem too close in my opinion. Is there an air gap spec.
I set mine to the thickness of an oil filter box flap, or about .017-.020″. That is the thickness of the paper shim glued in place on the tip of a genuine Mopar crank sensor. Once installed, the flywheel rubs the paper/cardboard off the tip of the sensor on first start. This leaves the sensor set at the proper air gap between the Crank sensor and flywheel. hope that helped.