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Specifications
Chrysler Hemi Fire Power 331 genereation I, V8 (90o) cyl, 4 stroke, petrol engine
Introduced in 1951
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Dimensions
Cylinders arrangement: V8 with 90ยบ included angle
Strokes: 4
Bore x Stroke: 96.8375 x 92.075 mm (3.8125" x 3.625")
Capacity: 5425.1 cc, 331ci
Construction materials
cast iron block, "low deck" 263.9mm (10.39") deck height, cast bell housing in the back of the block, bore spacing 115.9mm (4.5625")
forged steel cross plane crankshaft with 5 main bearings 63.5mm (2.5") diameter and 57.15mm (2.25") big end bearing diameter
connecting rod length between centers 168.3mm
Cylinder-head
1 side camshaft (OHV), 2 valves / cyl - 16 valves total
46mm inlet valve diameter, 38.1mm exhaust valve diameter
9.5mm stem diameter, 127.8mm valves length.
Dual valve springs
Intake/Exhaust manifold flanges
Aspiration
Natural
4 x dual-throat downdraft Zenith DD carburetors
Ignition
Firing Order: 1-8-4-3-6-5-7-2, (front to rear: Right bank 2-4-6-8, left bank 1-3-5-7)
6V battery
130 Amp/Hrs capacity
Autolite Coil for ignition
Cooling and lubrication
Water cooled 25 Imp. Quarts Water Capacity
wet sump, 7 Imp. Quarts Oil Capacity
Models used and Output
| Year | Model, Engine | Induction | Compression ratio | Power | Torque |
|---|---|---|---|---|---|
| 1951 | Allard J2 | 2 x Zenith DD carbs | 7.5:1 | 250 hp / 184 kW @ 5000 rpm | |
| 1952 | Cunningham C4R | 4 x Zenith DD carbs | 7.5:1 | 300 hp / 221 kW @ 5200 rpm | |
| 1953 | Cunningham C5R | 4 x Zenith DD carbs | 7.5:1 | 300 hp / 221 kW @ 5200 rpm |
Photoes
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Drawings
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SourceOil system