1950 BUICK

1950 BUICK

Models:

Buick Special, Series 40, 8 Cylinder

Buick Super, Series 50, 8 Cylinder

Buick Roadmaster, Series 70, 8 Cylinder

Buick Special, Series 40, 8 Cylinder:

Body Data & Pricing:

4 Door Sedan, 6 Passenger, Model 43, Body #50-4408

Base Price: $1,909; Shipping Weight: 3,715 Pounds; Production Total: 58,700

4 Door Sedan, 6 Passenger, Model 41, Body #50-4469

Base Price: $1,941; Shipping Weight: 3,710 Pounds; Production Total: 1,141

2 Door Sedanette, 6 Passenger, Model 46S, Body #50-4407

Base Price: $1,856; Shipping Weight: 3,655 Pounds; Production Total: 42,935

2 Door Business Coupe, 6 Passenger, Model 46, Body #50-4407B

Base Price: $1,803; Shipping Weight: 3,615 Pounds; Production Total: 2,500

4 Door Sedan, 6 Passenger, Model 43D, Body #50-4408D

Base Price: $1,952; Shipping Weight: 3,720 Pounds; Production Total: 14,335

4 Door Sedan, 6 Passenger, Model 41D, Body #50-4469D

Base Price: $1,983; Shipping Weight: 3,735 Pounds; Production Total: 141,396

2 Door Sedanette, 6 Passenger, Model 46D, Body #50-4407D

Base Price: $1,899; Shipping Weight: 3,665 Pounds; Production Total: 76,902

Total Series Production: 337,909.

Buick Super, Series 50, 8 Cylinder

Body Data & Pricing:

4 Door Sedan, 6 Passenger, Model 51, Body #50-4569

Base Price: $2,139; Shipping Weight: 3,745 Pounds; Production Total: 55,672

2 Door Sedanette, 6 Passenger, Model 56S, Body #50-4507

Base Price: $2,041; Shipping Weight: 3,645 Pounds; Production Total: 10,697

2 Door Hardtop Coupe, 6 Passenger, Model 56R, Body #50-4537

Base Price: $2,139; Shipping Weight: 3,790 Pounds; Production Total: 56,030

2 Door Convertible Coupe, 6 Passenger, Model 56C, Body #50-4567

Base Price: $2,476; Shipping Weight: 3,965 Pounds; Production Total: 12,259

4 Door Station Wagon, 6 Passenger, Model 59, Body #(Ionia)

Base Price: $2,844; Shipping Weight: 4,115 Pounds; Production Total: 2,480

4 Door Sedan, 6 Passenger, Model 52, Body #50-4519

Base Price: $2,212; Shipping Weight: 3,870 Pounds; Production Total: 114,745

Total Series Production: 251,883.

Buick Roadmaster, Series 70, 8 Cylinder

Body Data & Pricing:

4 Door Sedan, 6 Passenger, Model 71, Body #50-4769

Base Price: $2,633; Shipping Weight: 4,135 Pounds; Production Total: 6,738

2 Door Sedanette, 6 Passenger, Model 76S, Body #50-4707

Base Price: $2,528; Shipping Weight: 4,025 Pounds; Production Total: 2,968

2 Door Hardtop, 6 Passenger, Model 75R, Body #50-4737

Base Price: $2,633; Shipping Weight: 4,135 Pounds; Production Total: 2,300

2 Door Convertible Coupe, 6 Passenger, Model 76C, Body #50-4767

Base Price: $2,981; Shipping Weight: 4,345 Pounds; Production Total: 2,964

4 Door Station Wagon, 6 Passenger, Model 79, Body #(Ionia)

Base Price: $3,407; Shipping Weight: 4,470 Pounds; Production Total: 420

4 Door Sedan, 6 Passenger, Model 72, Body #50-4719

Base Price: $2,738; Shipping Weight: 4,220 Pounds; Production Total: 51,212

4 Door Sedan, 6 Passenger, Model 72R, Body #50-4719X

Base Price: $2,854; Shipping Weight: 4,245 Pounds;

Production Total: Included with model #72

2 Door Hardtop Coupe, 6 Passenger, Model76R, Body #4737X

Base Price: $2,764; Shipping Weight: 4,215 Pounds; Production Total: 8,432

Total Series Production: 75,034

Major Specifications, Buick Special, Model 40:

Wheelbase: 121-1/2", Model 40

Engine Type: Overhead Valve In-Line 8 Cylinder

Engine Bore & Stroke: 3-3/32" X 4-1/8"

Engine Displacement: 248.0 Cu. In.

Compression Ratio:

With Manual Transmission: 6.60:1

With Dynaflow Transmission: 7.20:1

Torque:

With Manual Transmission: 212 Ft. Lbs. @ 2,000 RPM

With Dynaflow Transmission: 215 Ft. Lbs. @ 2,000 RPM

Taxable Horsepower: 30.63

Horsepower:

With Manual Transmission: 110 @ 3,600 RPM

With Dynaflow Transmission: 115 @ 3,600 RPM

Normal Oil Pressure: 35 PSI

Carburetor: Carter, Model 725 or Model 782; or Stromberg Model AA UVB-267, #380309.

Rear Axle Ratio: Not Available

Tire Size: 7.60 X 15 Inches; Pressures: 27 Front & 27 Rear

Major Specifications, Buick Super, Series 50

Wheelbase: 121-1/2" (Model 52: 125-1/2")

Engine Type: Overhead Valve In-Line 8 Cylinder

Engine Bore & Stroke: 3-3/16" X 4-1/8"

Engine Displacement: 263.3 Cu. In.

Compression Ratio:

With Manual Tansmission: 6.90:1

With Dynaflow Transmission: 7.20:1

Taxable Horsepower: 32.51

Horsepower:

With Manual Transmission: 124 @ 3,600 RPM

With Dynaflow Transmission: 128 @ 3,600 RPM

Torque:

With Manual Transmission: 220 Ft. Lbs. @ 2,000 RPM

With Dynaflow Transmission: 223 Ft. Lbs. @ 2,000 RPM

Normal Oil Pressure: 35 PSI

Carburetor: Carter, Model 726; or Stromberg Model AAVG-267, #380258

Rear Axle Ratio: Not Available

Tire Size: 7.60 X 15 Inches; Pressures: 27 Front & 27 Rear

Major Specifications, Buick Roadmaster, Model 70

Wheelbase: 126-1/4" (Model 72: 130-1/4")

Engine Type: Overhead Valve In-Line 8 Cylinder

Engine Bore & Stroke: 3-7/16" X 4-5/16"

Engine Displacement: 320.2 Cu. In.

Compression Ratio: 7.20:1

Taxable Horsepower: 37.81

Horsepower: 152 @ 3,600 RPM

Torque: 280 Ft. Lbs. @ 2,000 RPM

Normal Oil Pressure: 35 PSI

Carburetor: Stromberg AA UVB, Number 380309 or Carter Model 725 or 782.

Rear Axle Ratio: Not Available

Tire Size: 8.20 X 15 Inches; Pressures: 27 Front & 27 Rear

Capacities, Buick Special, Model 40:

Cooling System: 13 Quarts; 14-1/4 Quarts with Dynaflow Transmission

Fuel Tank: 19 Gallons

Engine Oil: 5-1/2 Quarts

Grade of Oil: +32 Degrees F & Above, 20

+10 Degrees F & Above, 20W

- 10 Degrees F & Above, 10W

Manual Transmission Capacity: 1-3/4 Pints

Grade of Oil: Summer, 90H; Winter, 90H

Dynaflow Transmission Capacity: 19 Pints

Grade of Oil: Dynaflow Oil

Rear Axle Capacity: 4 Pints

Grade of Oil: Summer, 90H; Winter, 90H

Capacities, Buick Super, Model 50

Cooling System: 14-1/4 Quarts

Fuel Tank: 19 Gallons

Engine Oil: 5-1/2 Quarts

Grade of Oil: +32 Degrees F & Above, 20

+10 Degrees F & Above, 20W

- 10 Degrees F & Above, 10W

Manual Transmission Capacity: 1-3/4 Pints

Grade of Oil: Summer, 90H; Winter, 90H

Dynaflow Transmission Capacity: 19 Pints

Grade of Oil: Dynaflow Oil

Rear Axle Capacity: 4 Pints

Grade of Oil: Summer, 90H; Winter, 90H

Capacities, Buick Roadmaster, Model 70

Cooling System: 17-3/4 Quarts

Fuel Tank: 19 Gallons

Engine Oil: 7 Quarts

Grade of Oil: +32 Degrees F & Above, 20

+10 Degrees F & Above, 20W

- 10 Degrees F & Above, 10W

Transmission Capacity:

Dynaflow: 22 Pints

Grade of Oil: Dynaflow Transmission Oil

Rear Axle Capacity: 4 Pints

Grade of Oil: Summer, 90H; Winter, 90H

Tune-Up Data, Buick, Special, Super, & Roadmaster; Series 40, 50, & 70:

Spark Plug Gap: .025"

Spark Plug Type: AC 46X, Champion UJ-18Y or J-18Y or equivalent

Ignition Point Gap: .015"

Cam Angle: 25 Degrees

Ignition Timing Mark & Location: "ADV" Mark on Flywheel

Firing Order: 1-6-2-5-8-3-7-4

Tappet Clearance, Hot:

Mechanical Lifters: Intake: .015" Exhaust: .015"

Hydralic Lifters: Intake: Zero; Exhaust: Zero (Series 70)

Cylinder Head Tension: 65-70 Ft Lbs

Engine Idle Speed:

With Manual Transmission: 450 RPM

With Dynaflow Transmission: 450 RPM

Compression Pressure @ Cranking Speed: 114 PSI

Valve Data, Buick Special, Series 40:

Tappet Clearance, Running Hot:

Intake: .015"; With Hydralic Lifters: Zero

Exhaust: .015"; With Hydrallic Lifters: Zero

Tappet Clearance for Timing:

Intake: .015"; With Hydralic Lifters: Zero

Exhaust: .015"; With Hydralic Lifters: Zero

Valve Timing:

Intake Valve Opens: 13 Degrees BTDC

Exhaust Valve Closes: 22 Degrees ATDC

Valve Seat Angle:

Intake: 45 Degrees

Exhaust: 45 Degrees

Minimum Valve Spring Pressure (New Spring):

Standard Engine: Inner Spring: 51 Pounds @ 1-5/16"

Outer Spring: 77 Pounds @ 1-19/32"

With Hydralic Lifterss: Inner Spring: 52 Pounds @ 1-5/16"

Outer Spring: 119 Pounds @ 1-19/32"

Valve Stem Clearance:

Intake: .0015"-.0035"

Exhaust: .0021"-.0039"

Valve Data, Buick Super, Series 50

Tappet Clearance, Running Hot:

Hydralic Lifters: Intake: Zero Exhaust: Zero

Tappet Clearance for Timing:

Hydralic Lifters: Intake: Zero Exhaust: Zero

Valve Timing:

Intake Valve Opens: 13 Degrees BTDC

Exhaust Valve Closes: 22 Degrees ATDC

Valve Seat Angle:

Intake: 45 Degrees

Exhaust: 45 Degrees

Minimum Valve Spring Pressure (New Springs):

Inner Spring: 52 Pounds @ 1-5/16"

Outer Spring: 119 Pounds @ 1-19/32"

Valve Stem Clearance:

Intake: .0015:-.0035"

Exhaust: .0021"-.0039"

Valve Data, Buick Roadmaster, Series 70

Tappet Clearance, Running Hot:

Hydralic Lifters: Intake: Zero Exhaust: Zero

Tappet Clearance for Timing:

Hydralic Lifters: Intake: Zero Exhaust: Zero

Valve Timing:

Intake Valve Opens: 14 Degrees BTDC

Exhaust Valve Closes: 25 Degrees ATDC

Valve Seat Angle:

Intake: 45 Degrees

Exhaust: 45 Degrees

Minimum Valve Spring Pressure (New Springs):

Inner Spring: 52 Pounds @ 1-5/16"

Outer Spring: 119 Pounds @ 1-19/32"

Valve Stem Clearance:

Intake: .0015:-.0035"

Exhaust: .0021"-.0039"

Piston & Ring Data, Buick Special, Series 40 & Super, Series 50:

Pistons Removed from Above

Piston Clearance (Minimum):

Top Land: .023"

Top of Skirt: .0021"

Fitting Pistons with Spring Scale:

Shim Thickness to Use: Should fall @ .0015" and hold @ .002"

Pounds Pull on Scale: Use Shim Thickness Data

Width of Ring End Gap (Minimum):

Compression: .010"

Oil Control: .010"

Clearance Between Ring & Grooves:

Compression: .0015"-.003"

Oil Control: .0015"-.003" Flex-Fit Oil Rings: .0015"-.0035"

Piston & Ring Data, Buick Roadmaster, Series 70

Piston Removed from Above

Piston Clearance (Minimum):

Top Land: .026"

Top of Skirt: .0023"

Fitting Pistons with Sring Scale:

Shim Thickness to Use: Should fall @ .0015" and hold @ .002"

Pounds Pull on Scale: Use Shim thickness Data

Width of Ring End Gap (Minimum):

Compression: .010"

Oil Control: .010"

Clearance Between Ring & Grooves:

Compression: .0015"-.003"

Oil Control: .0015"-.003" Flex-Fit Oil Rings: .0015"-.0035"

Engine Bearing Data, Buick Special, Series 40:

Camshaft End Play: .004"-.008"

Camshaft Bearing Clearance: .0005"-.0035"

Connecting Rod Bearing Journal Diameter: 2.000"

Connecting Rod Bearing Clearance: .0005"-.002"

Connecting Rod End Play: .005"-.010"

Connecting Rod Bolt Tension: 40-45 Ft Lb

Main Bearing Journal Diameter:

#1: 2.3125" #2: 2.375" #3: 2.4375"

#4: 2.500" #5: 2.5625"

Main Bearing Clearance: .0005"-.002"

Crankshaft End Play: .004:-.008"

Main Bolt Tension: 90-100 Ft Lbs

Engine Bearing Data, Buick Super, Series 50:

Camshaft End Play: .004"-.008"

Camshaft Bearing Clearance: .0005"-.0035"

Connecting Rod Bearing Journal Diameter: 2.125"

Connecting Rod Bearing Clearance: .0005"-.002"

Connecting Rod End Play: .005"-.010"

Connecting Rod Bolt Tension: 40-45 Ft Lb

Main Bearing Journal Diameteer: 2.5625"

Main Bearing Clearance: .0005"-.002"

Crankshaft End Play: .004:-.008"

Main Bolt Tension: 90-100 Ft Lbs

Engine Bearing Data, Buick Roadmaster, Series 70

Camshaft End Play: .004"-.008"

Camshaft Bearing Clearance: .0005"-.0035"

Connecting Rod Bearing Journal Diameter: 2.250"

Connecting Rod Bearing Clearance: .0005"-.002"

Connecting Rod End Play: .005"-.010"

Connecting Rod Bolt Tension: 60-65 Ft Lbs

Main Bearing Journal Diameter:

#1: 2.5625" #2: 2.625" #3: 2.6875"

#4: 2.750" #5: 2.8215"

Main Bearing Clearance: .0005"-.002"

Crankshaft End Play: .004"-.008"

Main Bolt Tension: 90-100 Ft Lbs

Brake Data, Buick Special, Series 40, & Super, Series 50:

Lining Material: Primary Shoe, Woven; Secondary Shoe, Molded

Length of Lining Per Wheel: 23-1/16"

Width of Lining: 1-3/4"

Thickness of Lining: 3/16"

Brake Pedal Free Play: 1"

Brake Data, Buick Roadmaster, Series 70

Lining Material: Primary Shoe, Woven; Secondary Shoe, Molded

Length of Lining Per Wheel: 23-1/16"

Width of Lining: 2-1/4"

Thickness of Lining: 3/16"

Brake Pedal Free Play: 1"

Wheel Alignment Data, All Series:

Caster: +7/8 Degrees

Camber: +3/8 Degrees

Toe In: 1/32"

Kingpin Inclination: 4-1/4 Degrees

Rear Axle Data, All Series:

Ring Gear & Pinion Backlash: .008"-.012"

Drive Pinion Adjustment: Shims

Drive Pinion Bearing Adjustment: None

Axle Shaft End Play: .000"-.008"

Delco-Remy Distributor Specifications, All Series:

Distributor # 1110815

Cam Angle: 25 Degrees

Point Opening: .015"

Condensor Capacity: .20-.25 Mfds

Breker Arm Spring Tension: 19-23 Ounces

Centrifugal Advance Data:

Advance Starts: 1 Degree @ 250 RPM

Full Advance: 13 Degrees @ 1,500 RPM

Vacuum Advance Data

Inches of Vacuum to Start Plunger Movement: 5-7

Inches of Vacuum for Full Plunger Travel: 10-13

Maximum Vacuum Advance: 5-1/2 Degrees

Delco-Remy Generator Specifications, All Series:

Generator # 1102709

Brush Spring Tension

Main: 25

Direction of Rotation: Clockwise

Field Current @ 6 Volts: 1.75-1.9 Amperes

Maximum Cold Output:

30 Amperes; 8.0 Volts @ 1,755 RPM

Maximum Output: Controlled by Current Regulator

Delco-Remy Regulator Specifications, All Series:

Regulator Type: Voltage & Current

Regulator # 1118201

Voltage to Close Relay Points: 6.4 Volts

Reverse Current to Open Points: 0-3 Amperes

Armature Air Gap: .020"

Voltage Regulator Setting: 7.4 Volts

Current Regulator Setting: 36 Amperes

Current & Voltage Armature Air Gap: .075"

Delco-Remy Starting Motor Specifications, Series 70:

Starter # 1107953

Brush Spring Tension: 24-28 Ounces

No Load Test: 65 Amperes, 5.67 Volts @ 5,500 RPM

Lock Test: 600 Amperes, 3.0 Volts; Torque: 16 Ft Lbs

Delco-Remy Starting Motor Specifications, All Series:

Starter # 1107078

Brush Spring Tension: 24-28 Ounces

No Load Test: 80 Amperes, 5.7 Volts @ 5,000 RPM

Lock Test: 525 Amperes, 3.4 Volts; Torque: 12 Ft Lbs

Stromberg Carburetor Adjustments, Series 40 & 50:

Carburetor Model: AAUVB-267

Carburetor Part # 380257

Code # 7-88

Repair Kit # RK-151

Fuel Level: Fuel should be at level of sight plug hole, engine idling

Throttle Position for Economizer Valve: Controlled by manifold vacuum

Throttle Valve Location for Idle: .030"

Throttle Valve Location for Vacuum Spark Control: .080"

Fast Idle Setting: 53

Choke Unloader Setting: None

Carter Carburetor Specifications, Series 40 & 50:

Carburetor Model #WCD

Carburetor Part # 725S

Casting # 624

Repair Kit # 1515

Float Level: 5/32"

Idle Screw Setting, 7/8 to 1-3/8 Turns to Open

Metering Rod Gauge: *

Pump Travel: 20/64" Short Stroke

Anit-Percolator Setting: None

Unloader Setting: 3/16"

Fast Idle Setting: .015"

Choke Lockout Adjustment: None

* With throttle valves seated, press down on vacumeter link until metering rods bottom in bowl casting. With rods held down, revolve metering rod arm until lip contacts vacumeter llink. Tighten metering rod arm set screw.

Carter Carburetor Specifications, Series 70:

Carburetor Model #WCD

Carburetor Part # 726S

Casting # 626

Repair Kit # 1532

Float Level: 5/32"

Idle Screw Setting, 3/4 to 1-1/4 Turns to Open

Metering Rod Gauge: *

Pump Travel: 20/64" Short Stroke

Anit-Percolator Setting: None

Unloader Setting: 3/16"

Fast Idle Setting: .015"

Choke Lockout Adjustment: None

Fuel Pump Data:

Pump Model: AJ

Maximum Pressure: 4 PSI

Dash Gauge Manufacturer:

Gasoline, Oil Pressure, Temperature, & Ammeter: AC

1950 Buick Beginning Engine Numbers:

Series 40: 4-5568000

Series 50: 5-5628758 - Standard Transmission

Series 50: 5-5624734 - Dynaflow Transmission

Series 70: 7-5635021

1950 Buick Beginning Serial Numbers, All Series:

1-5360001, Flint Michigan

2-5370001, Southgate, California

3-5374001, Linden, New Jersey

4-5380001, Kansas City, Missouri

5-5388001, Wilmington, Delaware

6-5393001, Atlanta, Georgia

7-5397001, Framingham, Massachusetts

Popular Options, All Series:

Sonomatic Radio, Weather-Warden Heater & Defroster, Side View Mirror, EZI-Non Glare Rear View Mirror, Vanity Visor Mirror, Spot Light With Mirror, Auxillary Driving Lights, Multi-Purpose Trouble Light, Back-Up Lights, Tissue Dispenser, Breeze-Ease Draft Deflectors, Exhaust Pipe Trim, Tool Kit, Full Wheel Covers on Series 40 & 50, Handy Mats, All Rubber Floor Mat, Polish Cloth Kit, Seat Covers, Dynaflow Transmission on Special & Super.

1950 Buick Paint Codes & Colors

Code Color PPG #

5001 Black 9200

5002 Cumberland Gray Poly 30739

5003 Verde Green 40140

5004 Imperial Blue Poly 10674

5005 Sunmist Gray Poly 30623

5006 Allendale Green Poly 40568

5007 Royal Maroon #2 Poly 50125

5008 Cirrus Green Poly 40711

5009 Old Ivory 80433

5010 Olympic Blue Poly 10675

5014 Geneva Green Poly 40924

5015 Cumberland Gray 30759

5017 Niagra Green 40941

5018 Calvin Gray 30775

5019 Barton Gray 30774

5020 Meredith Green 40942

5024 Cloudmist Gray Poly 30868

5025 Kasmir Green Poly 40989

Two Tones

5011 Verde Green Upper & Cirrus Green Poly Lower

5012 Imperial Blue Poly Upper & Olympic Blue Poly Lower

5013 Sunmist Gray Poly Upper & Cumberland Gray Poly Lower

5016 Sunmist Gray Poly Upper & Cumberland Gray Lower

5021 Verde Green Upper & Niagra Green Lower

5022 Black Upper & Calvin Gray Lower

5023 Imperial Blue Poly Upper & Barton Gray Lower

1950 Buick Historical Data:

1950 Buick Model Year Production: 664,826.

Dynaflow Automatic Transmission was standard equipment on the Series 70, Roadmaster.

Promotional Model Cars Available:

Metal: Sedan