1951 HUDSON
Model Designations:
Hudson Pacemaker Custom Six Series 4A, 6 Cylinder
Hudson Super Custom Six, Series 5A, 6 Cylinder
Hudson Commodore Custom Six, Series 6A, 6 Cylinder
Hudson Commodore Custom Eight, Series 8A, 8 Cylinder
Hudson Hornet Six, Series 7A, 6 Cylinder
Hudson Pacemaker Custom, Series 4A, 6 Cylinder, Body Styles
4 Door Sedan, 6 Passenger
Base Price: $2,145; Shipping Weight: 3,460 Pounds
2 Door Brougham, 6 Passenger
Base Price: $2,102; Shipping Weight: 3,430 Pounds
2 Door Club Coupe, 6 Passenger
Base Price: $2,145; Shipping Weight: 3,410 Pounds
2 Door Coupe, 3 Passenger
Base Price: $1,964; Shipping Weight: 3,380 Pounds
2 Door Brougham Convertible, 6 Passenger
Base Price: $2,642; Shipping Weight: 3,600 Pounds
Production figures by model are not available.
Pacemaker Custom Production Total: 34,495 of which 425 were Convertibles.
Hudson Super Custom Six, Series 5A, 6 Cylinder, Body Styles
4 Door Sedan, 6 Passenger
Base Price: $2,287; Shipping Weight: 3,565 Pounds
2 Door Brougham, 6 Passenger
Base Price: $2,238; Shipping Weight: 3,535 Pounds
2 Door Club Coupe, 6 Passenger
Base Price: $2,287; Shipping Weight: 3,525 Pounds
2 Door Hollywood Coupe, 6 Pasenger
Base Price; $2,605; Shipping Weight: 3,590 Pounds
2 Door Brougham Convertible, 6 Passenger
Base Price: $2,827; Shipping Weight: 3,720 Pounds
Production figures by model are not available.
Super Custom Six Production Total: 22,532 of which 282 were Convertibles.
Hudson Custom Commodore Six, Series 6A, 6 Cylinder Body Styles
4 Door Sedan, 6 Passenger
Base Price: $2,480; Shipping Weight: 3,600 Pounds
2 Door Club Coupe, 6 Passenger
Base Price: $2,455; Shipping Weight: 3,685 Pounds
2 Door Hollywood, 6 Passenger
Base Price: $2,780; Shipping Weight: 3,640 Pounds
2 Door Brougham Convertible, 6 Passenger
Base Price: $3,011; Shipping Weight: 3,785 Pound
Production figures by model are not available.
Commodore Six Production Total: 16,979 of which 819 were Hollywoods and 211 were Convertibles.
Hudson Custom Commodore Eight, Series 8A, 6 Cylinder Body Styles
4 Door Sedan, 6 Passenger
Base Price: $2,568; Shipping Weight: 3,620 Pounds
2 Door Club Coupe, 6 Passenger
Base Price: $2,543; Shipping Weight: 3,600 Pounds
2 Door Hollywood, 6 Passenger
Base Price: $2,869; Shipping Weight: 3,650 Pounds
2 Door Brougham Convertible, 6 Passenger
Base Price: $3,099; Shipping Weight: 3,800 Pound
Production figures by model are not available.
Commodore Six Production Total: 14,243 of which 669 were Hollywoods and 181 were Convertibles.
1951 HUDSON
General Specifications
Hudson Pacemaker & Pacemaker DeLuxe, Series 4A:
Wheelbase: 119"
Engine Type: Inline 6, L-Head
Bore & Stroke: 3-9/16" X 3-7/8"
Engine Displacement: 232.0 Cu. In.
Compresssion Ratio: 6.70 to 1
Taxable Horsepower: 30.40
Horsepower: 112 @ 4,000 RPM
Torque: 175 Ft. Lbs. @ 1,600 RPM
Normal Oil Pressure: 40 PSI
Available Rear Axle Ratio: 4.55:1, 4.10:1, & 3.58:1
Tire Size: 7.10 x 15 inches
Hudson Super Custom Six, Series 5A & Commodore Six, Series 6A:
Wheelbase: 124"
Engine Type: Inline 6, L-Head
Bore & Stroke: 3-9/16" X 4-3/8"
Engine Displacement: 262.0 Cu. In.
Compresssion Ratio: 6.70 to 1
Taxable Horsepower: 30.40
Horsepower: 123 @ 4,000 RPM
Torque: 200 Ft. Lbs. @ 1,600 RPM
Normal Oil Pressure: 40 PSI
Rear Axle Ratio: 4.55:1, 4.10:1, & 3.58:1
Tire Size: 7.10 x 15 inches (Convertibles 7.60 X 15 inches)
Hudson Commodore Eight, Series 8A:
Wheelbase: 124 Inches
Engine Type: Inline 8, L-Head
Bore & Stroke: 3" X 4-1/2"
Engine Displacement: 254.5 Cu. In.
Compresssion Ratio: 6.70 to 1;
Taxable Horsepower: 28.80
Horsepower: 128 @ 4,200 RPM
Torque: 198 Ft. Lbs. @ 1,600 RPM
Normal Oil Pressure: 4 to 12 PSI
Rear Axle Ratio: 4.55:1, 4.10:1, & 3.58:1
Tire Size: 7.10 x 15 inches (Convertibles 7.60 X 15 inches)
Hudson Hornet Six, Series 7A :
Wheelbase: 124"
Engine Type: Inline 6, L-Head
Bore & Stroke: 3-13/16" X 4-1/2"
Engine Displacement: 308.0 Cu. In.
Compresssion Ratio: 7.20 to 1
Taxable Horsepower: 34.88
Horsepower: 145 @ 3,800 RPM
Torque: 257 Ft. Lbs. @ 1,800 RPM
Normal Oil Pressure: 40 PSI
Rear Axle Ratio: 4.55:1, 4.10:1, & 3.58:1
Tire Size: 7.10 x 15 inches (Convertibles 7.60 X 15 inches)
Tune Up Specifications, 6 Cylinder Models:
Spark Plug Type: Champion H-8 or Equivalent
Spark Plug: Gap .032"
Point Gap: .020"
Firing Order: 1-5-3-6-2-4
Ignition Timing: UDC Mark 1-6 on Flywheel
Engine Idle Speed:
Manual Transmission: 600 RPM
Semi-Automatic Transmission & Automatic Tansmission: 500 RPM
Cylinder Head Torque: 70 Ft Lbs.
Compression Pressure @ Cranking Speed: 100 PSI
Tune Up Specifications, 8 Cylinder Models:
Spark Plug Type: Champion H-8 or Equivalent
Spark Plug: Gap .032"
Point Gap: .017"
Firing Order: 1-6-2-5-8-3-7-4
Ignition Timing: UDC Mark 1-8 on Flywheel
Engine Idle Speed:
Manual Transmission: 600 RPM
Semi-Automatic Transmission & Automatic Transmission: 500 RPM
Cylinder Head Torque: 45 Ft Lbs.
Compression Pressure @ Cranking Speed: 119 PSI
Valve Specifications
6 Cylinder Engine
Tappet Clearance, Running Hot: Intake: .010", Exhaust: .010"
Clearance for Timing: Intake: .010"; Exhaust: .010"
Valve Timing: Intake Opens 7.5 Degrees Before Top Dead Center
Exhaust Closes 7.5 Degrees After Top Dead Center
Valve Seat Angle: Intake 45 degrees; Exhaust 45 degrees,
Valve Spring Pressure: 77 Lbs @ 2-3/16 inches (New Springs)
Valve Stem Clearance: Intake .0015"-.003"
Exhaust .002"-.004"
8 Cylinder Engine
Tappet Clearance, Running Hot: Intake .006"; Exhaust .008"
Clearance for Timing: Intake: .010"; Exhaust: .010"
Valve Timing: Intake Opens 10.5 Degrees Before Top Dead Center
Exhaust Closes 18.7 degrees After Top Dead Center
Valve Seat Angle: Intake 45 degrees; Exhaust 45 degrees,
Valve Spring Pressure: 40 Lbs @ 2 inches (New Springs)
Valve Stem Clearance: Intake .0015"-.003"
Exhaust .003"-.005"
Piston & Ring Data, 6 Cylinder
Piston Removal: Above
Fitting Pistons with Spring Scale:
Shim Thickness: .002"
Pounds Pull on Scale: 3 to 4
Ring End Gap (Minimum):
Compression Ring: .006"
Oil Ring: .006"
Clearance in Ring Grooves:
Compression Ring: .0015"-.002"
Oil Control Ring: .001"-.0015"
Wrist Pin Diameter: .9684"--9687"
Piston & Ring Data, 8 Cylinder
Piston Removal: Above or Below
Fitting Pistons with Spring Scale:
Shim Thickness: .0015"
Pounds Pull on Scale: 3 to 4
Ring End Gap (Minimum):
Compression Ring: .004"
Oil Ring: .004"
Clearance Between Ring & Grooves:
Compression Ring: .0015"-.002"
Oil Control Ring: .001"-.0015"
Wrist Pin Diameter: .7497"-.750"
Engine Bearing Data, 6 Cylinder
Rod Journal Diameter: 2.1244"-2.1254"
Rod Bearing Clearance: .0005"-.0015"
Rod End Play: .007"-.013" Rod Bolt Tension: 45 Lbs. Ft.
Main Bearing Journal Diameter: 2.4988"-2.4998"
Main Bearing Clearance: .0005" -.0015"
Crankshaft End Play: .003"-.009"
Main Bolt Tension: 75 Lbs. Ft.
Engine Bearing Data, 8 Cylinder
Rod Journal Diameter: 1.935"- 1.936"
Rod Bearing Clearance: .0003"-.0006"
Rod End Play: .007"-.013"
Rod Bolt Tension: 45 Lbs. Ft.
Main Bearing Journal Diameter:
Front: 2.279" - 2.280"; #2: 2.311"-2.312"; #3: 2.341"-2.342";
#4: 2.373"-2.374"; Rear: 2.404"-2.405"
Main Bearing Clearance: .001"
Crankshaft End Play: .006"-.012"
Main Bolt Tension: 75 Lbs. Ft.
Capacities, 6 & 8 Cylinder:
Cooling System:
Without Heater: 18-1/2 Quarts
With Heater: 19-1/2 Quarts
Fuel Tank: 20 Gallons;
Engine Oil Refill: 7 Quarts;
Manual Transmission: 2 Pints , With Overdrive: 3-1/4 Pints
Automatic Transmission: 11 Quarts
Rear Axle: 3-1/2 Pints
Filters, All Series:
Oil Filter: AC P203 or Equivalent
Auto-Lite Distributor Specifications, 6 Cylinder:
Distributor #1AT-4009A
Rotation: Clockwise
Cam Angle: 39 Degrees
Breaker Point Opening: .020"
Condenser Capacity: .21-.25 Mfds
Breaker Arm Spring Tension: 17-20 Ounces
Centrifugal Advance Data:
Advance Starts: 1 Degree @ 670 RPM
Full Advance: 9 Degrees @ 2,000 RPM
Vacuum Advance Data:
Advance Starts: 1 Degree @ 14" Vacuum
Full Advance: 3.7 Degrees @ 16" Vacuum
Auto-Lite Distributor Specifications:
Distributor #1AT-4009
Rotation: Clockwise
Cam Angle: 39 Degrees
Breaker Point Opening: .020"
Condenser Capacity: .21-.25 Mfds
Breaker Arm Spring Tension: 17-20 Ounces
Centrifugal Advance Data:
Advance Starts: 1 Degree @ 330 RPM
Full Advance: 10 Degrees @ 2,000 RPM
Vacuum Advance Data:
Advance Starts: 1 Degree @ 10" Vacuum
Full Advance: 5 Degrees @ 12" Vacuum
Auto-Lite Distributor Specifications, 8 Cylinder:
Distributor #1GT-4204B-1
Rotation: Clockwise
Cam Angle: 27 Degrees
Breaker Point Opening: .017"
Condenser Capacity: .20-.25 Mfds
Breaker Arm Spring Tension: 17-20 Ounces
Centrifugal Advance Data:
Advance Starts: 1 Degree @ 330 RPM
Full Advance: 17-1/2 Degrees @ 1,700 RPM
Vacuum Advance Data:
Advance Starts: 1 Degree @ 14" Vacuum
Full Advance: 4 Degrees @ 16" Vacuum
Auto-Lite Generator Specifications:
Generator #GDZ-6001B
Direction of Rotation: Clockwise
Generator Output: 35 Amperes @ 2,000 RPM
Brush Spring Tension: 35-53 Ounces (Maximum)
Field Current at 5 or 10 Volts: 1.3 to 1.5 Amperes
Regulator #VRP-6001A
Cutout Relay:
Voltage to Close Points: 6.5 Volts
Reverse Current to Open Points: 4 to 6 Amperes
Armature Air Gap: .031"
Voltage Regulator Setting: 7.5 Volts
Current Regulator Setting: 35 Amperes
Current & Voltage Armature Air Gap: .048"
Ground Polarity: Positive
Auto-Lite Starting Motor Specifications:
Unit #: MZ-4164
Rotation: Clockwise
Brush Spring Tension: 42-53 Ounces
No Load Test:
68 Amperes; 5.0 Volts; @ 4,000 RPM
Torque Test:
280 Amperes; 2.0 Volts; Torque 8.0 Ft Lbs
Unit #: MZ-4167 (6 Cylinder)
Rotation: Clockwise
Brush Spring Tension: 42-53 Ounces
No Load Test:
68 Amperes; 5.0 Volts; @ 4,000 RPM
Torque Test:
280 Amperes; 2.0 Volts; Torque 4.4 Ft Lbs
Unit #: MCH-6107
Rotation: Clockwise
Brush Spring Tension: 42-53 Ounces
No Load Test:
65 Amperes; 5.0 Volts; @ 4,300 RPM
Torque Test:
335 Amperes; 2.0 Volts; Torque 6.0 Ft Lbs
Unit #: MCH-6109 (6 Cylinder)
Rotation: Clockwise
Brush Spring Tension: 42-53 Ounces
No Load Test:
65 Amperes; 5.0 Volts; @ 4,300 RPM
Torque Test:
335 Amperes; 2.0 Volts; Torque 6.0 Ft Lbs
Carter Carburetor Specifications, 6 Cylinder:
Carburetor Model: WA-1
Part # 749S
Float Level: 1/2"
Idle Screw Setting, Turns Open: 1/2 to 1-1/2
Pump Adjustment Using Gauge T109-117S: 16
Metering Rod Gauge: T109-102
Anti-Percolator Adjustment: .020"
Fast Idle Setting: 5/8"
Unloader Setting: 7/16"
Automatic Choke Setting: 1 Lean
Carter Carburetor Specifications, 6 Cylinder:
Carburetor Model: WGD
Part # 776S
Float Level: 3/16"
Idle Screw Setting, Turns Open: 1/2 to 1
Pump Adjustment Using Gauge T109-117S: 46 or 1/2"
Fast Idle Setting: .026"
Unloader Setting: 5/32"
Automatic Choke Setting: 2 Lean
Carter Carburetor Specifications, 8 Cylinder:
Carburetor Model: WGD
Part # 773S
Float Level: 3/16"
Idle Screw Setting, Turns Open: 1/2 to 1
Pump Adjustment Using Gauge T109-117S: 46 or 1/2"
Fast Idle Setting: .026"
Unloader Setting: 5/32"
Automatic Choke Setting: Index
Fuel Pump Data:
Maximum Pressure: 4 - 5 PSI
Brake Specifications, Pacemaker:
Lining Dimensions/Wheel in Inches:
Length: 20-1/8"
Width:
Front & Rear: 1-3/4"
Thickness: 11/64"
Brake Shoe Clearance: .010"
Wheel Cylinder Bore:
Front: 1-1/16"
Rear: 15/16"
Master Cylinder Bore: 1"
Brake Specifications, 6& 8 Cylinder, Except Pacemaker:
Lining Dimensions/Wheel in Inches:
Length:
Front: 21-1/3"
Rear: 20-1/8"
Width:
Front: 2-1/4"
Rear: 1-3/4"
Thickness: 11/64"
Brake Shoe Clearance: .010"
Wheel Cylinder Bore:
Front: 1-1/8"
Rear: 15/16"
Master Cylinder Bore: 1"
Wheel Alignment Specifications, All Series
Caster: +1 Degree
Camber: +1 Degree
Toe In; 0 to 1/16"
Toe-Out on Turns:
Outer Wheel: 25 Degrees
Inner Wheel: 30 Degrees
Kingpin Angle: 3-3/5 Degrees
Beginning Engine Numbers:
6 Cylinder, Series 4A: 4A101
6 Cylinder, Series 5A: 5A101
6 Cylinder, Series 6A: 6A101
8 Cylinder, Series 7A: 7A101
6 Cylinder, Series 8A: 8A101
Beginning Serial Numbers:
Series 4A: 4A101
Series 5A: 5A101
Series 6A: 6A101
Series 7A: 7A101
Series 8A: 8A101
Popular Options
Front Fender Ornament (Supers), Red or Cream Wheel Covers, Front Bumper Guard (Supers), Convertible Rear Window Glass, Weather Control Heater, Radio, Foam Rubber Seat Cushions (Pacemaker & Super), Fender Skirts (Pacemaker), Turn Signals, Commodore Steering Wheel on Supers, Wheel Trim Rings, Power Windows (Super 6 Convertibles), Large Hub Caps, Mechanical or Electric Clock on Pacemakers, Electric Clock on Supers, Leather Trim, White Wall Tires, Aluminum Cylinder Head (6 & 8 Cylinder), Drive-Master Semi-Automatic Transmission on Pacemaker & Super, Super-Matic (All Series except Hornet), Hydra-Matic (Commodore & Hornet), Oil Bath Air Cleaner, Overdrive, Vacuum Booster Pump.
1951 Hudson Historical Data
1951 Hudson Model Year Introduction was September, 1950.
Total 1951 Hudson Production was 88,249.
Promotional Model Cars Produced:
Metal: 4 Door Sedan
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