1946 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 41, Body #46-4409

Base Price: $1,580; Shipping Weight: 3,720 Pounds; Production Total: 1,696

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

Base Price: $1,522; Shipping Weight: 3,670 Pounds; Production Total: 1,350

Buick Super, Series 50, 8 Cylinder

Body Data & Pricing:

4 Door Sedan, 6 Passenger, Model 51, Body #46-4569

Base Price: $1,822; Shipping Weight: 3,935 Pounds; Production Total: 77,724

2 Door Sedanette, 6 Passenger, Model 56S, Body #46-4507

Base Price: $1,741; Shipping Weight: 3,795 Pounds; Production Total: 34,425

2 Door Convertible Coupe, 6 Passenger, Model 56C, Body #46-4567

Base Price: $2,046; Shipping Weight: 4,050 Pounds; Production Total: 6,387

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

Base Price: $2,594; Shipping Weight: 4,170 Pounds; Production Total: 798

Buick Roadmaster, Series 70, 8 Cylinder

Body Data & Pricing:

4 Door Sedan, 6 Passenger, Model 71, Body #46-4769

Base Price: $2,110; Shipping Weight: 4,165 Pounds; Production Total: 20,864

2 Door Sedanette, 6 Passenger, Model 76S, Body #46-4707

Base Price: $2,014; Shipping Weight: 4,095 Pounds; Production Total: 8,292

2 Door Convertible Coupe, 6 Passenger, Model 76C, Body #46-4767

Base Price: $2,347; Shipping Weight: 4,345 Pounds; Production Total: 2,587

Major Specifications, Buick Special, Model 40:

Wheelbase: 121", 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: 6.30:1

Torque: 206 Ft. Lbs @ 2,000 RPM

Taxable Horsepower: 30.63

Horsepower: 110 @ 3,600 RPM

Normal Oil Pressure: 45 PSI

Carburetor: Carter, Model 608 or Model 663; or Stromberg Model AAV-16

Rear Axle Ratio: Not Available

Tire Size: 6.50 X 16 Inches; Pressures: 25 Front & 25 Rear

Major Specifications, Buick Super, Series 50

Wheelbase: 124"

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: 6.30:1

Taxable Horsepower: 30.63

Horsepower: 110 @ 3,600 RPM

Torque: 206 Ft. Lbs @ 2,000 RPM

Normal Oil Pressure: 45 PSI

Carburetor: Carter, Model 608 or Model 663; or Stromberg Model AAV-16, AA1

Rear Axle Ratio: Not Available

Tire Size: 6.50 X 16 Inches; Pressures: 25 Front & 25 Rear

Major Specifications, Buick Roadmaster, Model 70

Wheelbase: 129"

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: 6.60:1

Taxable Horsepower: 37.81

Horsepower: 144 @ 3,600 RPM

Torque: 276 Ft Lbs @ 2,000 RPM

Normal Oil Pressure: 45 PSI

Carburetor: Stromberg AAV-26, Number 380097 or Carter Model 609 or Model 664

Rear Axle Ratio: Not Available

Tire Size: 7.00 X 15 Inches; Pressures: 25 Front & 25 Rear

Capacities, Buick Special, Model 40:

Cooling System: 13 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

Transmission Capacity: 1-3/4 Pints

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

Rear Axle Capacity: 3 Pints

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

Capacities, Buick Super, Model 50

Cooling System: 13 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

Transmission Capacity: 1-3/4 Pints

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

Rear Axle Capacity: 3 Pints

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

Capacities, Buick Roadmaster, Model 70

Cooling System: 16-3/4 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: 2-1/2 Pints

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

Rear Axle Capacity: 3 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 48, 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:

Intake: .015" Exhaust: .015"

Cylinder Head Tension: 65-70 Ft Lbs

Engine Idle Speed: 450 RPM

Compression Pressure @ Cranking Speed: 112 PSI

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

Tappet Clearance, Running Hot:

Intake: .015"

Exhaust: .015"

Tappet Clearance for Timing:

Intake: .015"

Exhaust: .015"

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):

Inner Spring: 45 Pounds @ 1-5/16"

Outer Spring: 67 Pounds @ 1-19/32"

Valve Stem Clearance:

Intake: .0015"-.0035"

Exhaust: .0021"-.0039"

Valve Data, Buick Roadmaster, Series 70

Tappet Clearance, Running Hot:

Intake: .015"

Exhaust: .015"

Tappet Clearance for Timing:

Intake: .015"

Ehaust: .015"

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: 45 Pounds @ 1-5/16"

Outer Spring: 67 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 @ .00225"

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"

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 @ .00225"

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"

Engine Bearing Data, Buick Special, Series 40 & Super, Series 50:

Camshaft End Play: .004"-.008"

Camshaft Bearing Clearance: .0005"-.0035"

Connecting Rod Bearing Journal Diameter: 1.997"-1.999"

Connecting Rod Bearing Clearance: .0008"-.0018"

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

Connecting Rod Bolt Tension: 40-45 Ft Lb

Main Bearing Journal Diameter:

#1: 2.3095"-2.3115" #2: 2.3725"-2.3745" #3: 2.4345"-2.4365"

#4: 2.4975"-2.4995" #5: 2.5595"-2.5615"

Main Bearing Clearance: .0007"-.0022"

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: 2.248"-2.249"

Connecting Rod Bearing Clearance: .0008"-.0018"

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

Connecting Rod Bolt Tension: 60-65 Ft Lbs

Main Bearing Journal Diameter:

#1: 2.5605"-2.5615" #2: 2.6235"-2.6245" #3: 2.6855"-2.6865"

#4: 2.7485"-2.7495" #5: 2.8105"-2.8115"

Main Bearing Clearance: .0007"-.0025"

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: +3/8 Degrees

Camber: +3/8 Degrees

Toe In: 1/32"

Kingpin Inclination: 4-1/4 Degrees

Rear Axle Data, All Series:

Ring Gear & Pinion Backlash: .006"-.010"

Drive Pinion Adjustment: Shims

Drive Pinion Bearing Adjustment: None

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

Delco-Remy Distributor Specifications, All Series:

Distributor # 1110801

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, Series 40 & 50:

Generator # 1102679

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 @ 1,825 RPM

Maximum Output: Controlled by Current Regulator

Delco-Remy Generator Specifications, Series 70:

Generator # 1102668

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 @ 1,825 RPM

Maximum Output: Controlled by Current Regulator

Delco-Remy Regulator Specifications, All Series:

Regulator Type: Voltage & Current

Regulator # 1118201

Ground Polarity: Negative

Voltage to Close Relay Points: 6.2-6.7 Volts

Amperage to Open Relay Points: 0-4.0 Amperes

Maximum Operating Amperage: 34-36 Amperes

Maximum Operating Voltage (Hot): 7.2-7.4 Volts

Delco-Remy Starting Motor Specifications, Series 40 & 50:

Starter # 1107149

Brush Spring Tension: 24-28 Ounces

No Load Test: 65 Amperes, 5.0 Volts @ 5,000 RPM

Lock Test: 525 Amperes, 3.37 Volts; Torque: 12 Ft Lbs

Delco-Remy Starting Motor Specifications, Series 70:

Starter # 1107929

Brush Spring Tension: 24-28 Ounces

No Load Test: 60 Amperes, 5.0 Volts @ 6,000 RPM

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

Stromberg Carburetor Adjustments, Series 70:

Carburetor Model: AAV-26

Carburetor Part # 380097

Code # 7-57

Repair Kit # RK-73

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: .022"

Throttle Valve Location for Vacuum Spark Control: .055"

Fast Idle Setting: 53

Choke Unloader Setting: 11/64"

Carter Carburetor Specifications, Series 40 & 50:

Carburetor Model #WCD

Carburetor Part # 608S-SA

Casting # 324 or 546

Repair Kit # 1364B

Float Level: 3/16"

Idle Screw Setting, 1/2-1 Turns to Open

Metering Rod Gauge: T109-152

Pump Travel: 21/64"

Anit-Percolator Setting: None

Unloader Setting: 3/16"

Fast Idle Setting: .012"

Choke Lockout Adjustment: None

Carter Carburetor Specifications, Series 70:

Carburetor Model #WCD

Carburetor Part # 609S-SA

Casting # 402 or 548

Repair Kit # 1365B

Float Level: 3/16"

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

Metering Rod Gauge: T109-163

Pump Travel: 21/64"

Anit-Percolator Setting: None

Unloader Setting: 3/16"

Fast Idle Setting: .018"

Choke Lockout Adjustment: None

Fuel Pump Data:

Pump Model: AJ

Maximum Pressure: 4 PSI

Dash Gauge Manufacturer:

Gasoline, Oil Pressure, Temperature, & Ammeter: AC

1946 Buick Beginning Engine Numbers:

Series 40: 4-4558037

Series 50: 5-4558037

Series 70: 7-4558037

1946 Buick Beginning Serial Numbers, All Series:

1-4364445, Flint Michigan

2-4380001, Southgate, California

3-4390001, Linden, New Jersey

Popular Options, All Series:

Sonomatic Radio, Weather-Warden Heater & Defroster, Side View Mirror, EZI-Non Glare Rear View Mirror, Prismatic Inside Rear View Mirror, Vanity Visor Mirror, Spot Light, Auxillary Driving Lights, Multi-Purpose Trouble Light, Breeze-Ease Draft Deflectors, Seat Covers.

1946 Buick Paint Codes & Colors

Code Color PPG #

4601 Black 9200

4602 Nightshade Blue Poly 10095

4603 Cantebury Blue Poly 10246

4604 Verde Green 40140

4605 Sherwood Green 40275

4606 Brunswick Green Poly 40276

4608 Dusty Gray 30066

4609 Rivermist Gray 30069

4613 Ldhigh Gray Poly 30323

4614 Sequoia Cream 80118

Two Tones

4610 Rivermist Gray Upper & Dusty Gray Lower

4611 Brunswick Green Poly Upper & Sherwood Green Poly Lower

1946 Buick Historical Data:

1946 Buick Model Year Production: 154,076, including those built for export.

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