Mopar's Infamous Hemi
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Hemi Engine Database

1955 Chrysler FirePower 331
Model Number: NE55
Size (cu-in) 331
Power (hp) 250 @ 4600
Torque (lb-ft) 340 @ 2800
Bore (in) 3.8125
Stroke (in) 3.625
Compression 8.5:1
Carburetor 4V
In Valves (in) 1.94
Ex Valves (in) 1.75
Firing Order 1-8-4-3-6-5-7-2
Left Bank 1-3-5-7
Right Bank 2-4-6-8
Dry Weight (lbs) 729

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