Chrysler 488 (8.0 L) Magnum V10

Chrysler 488 (8.0 L) Magnum V10The Chrysler/Dodge 488 Magnum is a 8.0 l (7,997 cc, 488.0 natural aspirated V10 90° four-stroke gasoline engine from Chrysler LA/Magnum-family. This engine was manufactured from 1994 up to 2003.

The Chrysler 488 Magnum features a cast-iron block and two cast-iron heads with a single camshaft (OHV) and two valves per cylinder (20 valves in total). The Chrysler 8.0 L Magnum engine is equipped with a multi-point fuel injection system and an electrical ignition system with two ignition coils pack and individual coil for each spark plug.

The compression ratio rating is 8.4:1. A 101.6 mm (4 in) cylinder bore and 98.6 mm (3.88 in) piston stroke give the 488 Magnum engine a total of 7,997 cc of displacement.

The 8.0 L 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 horsepower and 610 N·m (62.2 kg·m, 449.6 ft·lb) at 2,400 rpm of peak torque

General information

Engine Specifications
Engine modelChrysler 8.0 L (488 cu in) Magnum V10
LayoutFour stroke, V10
Fuel typeGasoline (petrol)
Displacement8.0 L, 7.997 cc (488.0 cu in)
Fuel systemMulti-point Fuel Injection
Power adderNone
Power output From 305 PS (224 kW; 300 HP) at 4,100 rpm
to 314 PS (231 kW; 310 HP) at 4,100 rpm
Torque output 610 N·m (62.2 kg·m, 449.6 ft·lb) at 2,400 rpm
Firing order1-10-9-4-3-6-5-8-7-2
Dimensions (L x W x H):

Cylinder block

The 8.0 L Magnum engine has a cast-iron block with a six-bearings crankshaft supported system. The cylinder bore is 101.6 mm (4.00 in), piston stroke is 98.6 mm (3.88 in) and the compression ratio rating is 8.4:1. 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 76.2 mm (3.00 in) and the crankpin diameter is 53.0 mm (2.08 in).

Cylinder block
Cylinder block alloyCast-iron
Compression ratio:8.4:1
Cylinder bore:101.6 mm (4.00 in)
Piston stroke:98.6 mm (3.88 in)
Number of piston rings (compression / oil):2/1
Number of main bearings:6
Cylinder inner diameter (standard):101.600-101.65 mm (4-4.002 in)
Piston skirt diameter (standard):
Piston pin outer diameter:24.996-25.001 mm (0.9841-0.9843 in)
Piston ring side clearance:Top0.074-0.097 mm (0.0029-0.0038 in)
Second0.074-0.097 mm (0.0029-0.0038 in)
Oil0.185-0.245 mm (0.0073-0.0096 in)
Piston ring end gap:Top0.255-0.508 mm (0.01-0.02 in)
Second0.255-0.508 mm (0.01-0.02 in)
Oil0.380-1.397 mm (0.015-0.055 in)
Connecting rod small end diameter:24.940-24.978 mm (0.9819-0.9834 in)
Crankshaft main journal diameter:76.187-76.213 mm (2.9995-3.0005 in)
Crankpin diameter:53.950-53.975 mm (2.124-2.125 in)

Main bearing cap bolts tightening procedure and torque specs:

  • 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

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

Cylinder head

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 48.8 mm (1.92 in), the duration is 246° the exhaust valve diameter is 41.2 mm (1.62 in), the duration is 265°. The Chrysler 488 Magnum engine is equipped with hydraulic valve tappets.

Cylinder head
Block head alloyCast-iron
Valve Arrangement:OHV, Chain drive
Head surface flatness
Valves:20 (2 valves per cylinder)
Intake valve timing246°
Exhaust valve timing:265°
Valve head diameter:INTAKE48.640-48.900 mm (1.915-1.9252 in)
EXHAUST41.123-41.377 mm (1.619-1.629 in)
Valve length:INTAKE145.190-145.820 mm (5.7161-5.7409 in)
EXHAUST145.540-146.180 mm (5.7299-5.7551 in)
Valve stem diameter:INTAKE7.900-7.920 mm (0.311-0.3118 in)
EXHAUST7.900-7.920 mm (0.311-0.3118 in)
Valve spring free length:49.962 mm (1.967 in)

Head tightening procedure and torque specs:

  • Step 1: 58 Nm; 5.8 kg·m; 43 ft·lb
  • Step 2: 143 Nm; 14.0 kg·m; 105 ft·lb

Cylinder head cover bolts

  • 16 Nm; 1.6 kg·m; 9.0 ft·lb

Maintenance data

Compression pressure
Standard1,170-1,310 kPa (170-190 psi)
Oil system
Recommended engine oilSAE: 10W-30
Oil type APIAPI: SH or SH/CD
Engine oil capacity (Refill capacity) With filter change 6.6 L (7.0 US. qt, 5.8 Imp. qt.)
Without filter change 6.3 L (6.7 US. qt, 5.5 Imp. qt.)
Oil pressure Idle speed: 83-172 kPA (12-25 psi)
3,000 rpm 345-414 kPA (50-60 psi)
Ignition system
Spark plugChampion QC9MC4
Spark plug gap1.15 mm (0.0453 in)
Spark plug tightening torque41.0 N·m (4.2 kg·m, 30.2 ft·lb)

Vehicle applications

ModelYears Produced
Dodge Ram 2500/3500 Pickup1994-2003
Author: Sergei Wers
About: Co-founder and CEO of a multi-brand auto repair shop (engine repair, chassis repair, body repair and painting) for over 15 years. I have been developing internet sites with technical specifications for more than seven years.

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    • The Dodge V10 truck engine is very reliable engine. That is why you do not see many for sale. Everyone is hanging on to them. The V10 can match a diesel for towing cap at a lower maintain cost. By far the diesel will get better MPG. If you drive less than 12,000 miles per year. The gas engine is better than the diesel. If you travel above 5,000 feet ELV a lot. The V10 gas is a better engine. I own a Ford V10, Love it. I live at 5,300 feet. Owned diesels before.

      • My Ram with the cummins produces 385 hp and almost 1000 ft. pounds of torque. It also gets almost 20 mpg versus your 8 mpg! It will also outlast you gas engine by 200,000 miles. The only problem is the democrat regime attacking diesel fuel with their nazi epa regulations, driving up diesel fuel prices!

        • Apples to oranges. Is your Ram from the 1990’s? When it was released, the Ram V10 made 55 more horsepower and 55 more torque than the optional Cummins from the same year. Also, the V10 averaged 11mpg, not 8, so it’s clear you are exaggerating to reinforce your bias. You invalidated your own opinion. Good job. Still a far cry from the 17 or so the 12v Cummins got though.

          • V10 stock makes more power and torque than stock 12v.
            Can’t compare stock vs bolt on parts
            Can’t fix stupid…

    • I own a 1999 Ram 2500 4×4 extra cab. Have owned since 2000. Has 208,000 miles, still running smooth and strong. Keep up on oil changes. The weak link is the automatic trans. Keep tranny cool as possible. This is a low RPM engine, designed for towing. Not for gas mileage or racing. If needed for towing this is a very capable truck.

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