1941 BUICK
Models:
Buick Special, Series 40A, 8 Cylinder (118" Wheelbase)
Buick Special, Series 40B, 8 Cylinder (121" Wheelbase)
Buick Super, Series 50, 8 Cylinder
Buick Century, Series 60, 8 Cylinder
Buick Roadmaster, Series 70, 8 Cylinder
Buick Limited, Series 90, 8 Cylinder (139" Wheelbase)
Buick Special, Series 40A, 8 Cylinder (118" Wheelbase)
Body Data & Pricing:
2 Door Business Coupe, 3 Passenger, Model 44
Base Price: $915; Shipping Weight: 3,530 Pounds; Production Total: 3,258
2 Door Convertible Coupe, 6 Passenger, Model 44C
Base Price: $1,138; Shipping Weight: 3,780 Pounds; Production Total: 4,282
2 Door Sport Coupe, 6 Passenger, Model 44S
Base Price: $980; Shipping Weight: 3,590 Pounds; Production Total : 5,269
4 Door Trunk Sedan, 5 Passenger, Model 47
Base Price: $1,021; Shipping Weight: 3,670 Pounds; Production Total: 13,992
Buick Special, Series 40B, 8 Cylinder (121" Wheelbase)
4 Door Trunk Sedan, 6 Passenger, Model 41
Base Price: $1,052; Shipping Weight: 3,730 Pounds; Production Total: 91,138
4 Door Sedan, Super Equipment, Model 44SE
Base Price: $ NA; Shipping Weight: NA; Production Total: 13,378
2 Door Business Coupe, 3 Passenger, Model 46
Base Price: $735; Shipping Weight: 3,630 Pounds; Production Total: 9,185
2 Door Sedanette, 6 Passenger, Model 46S
Base Price: $1,006; Shipping Weight: 3,700 Pounds; Production Total: 87,687
2 Door Sedanette, Super Equipment, 6 Passenger, Model 46SSE
Base Price: $1,063; Shipping Weight: NA; Production Total: 6,591
4 Door Estate Wagon, 6 Passenger, Model 49
Base Price: $1,463; Shipping Weight: 3,980 Pounds; Production Total: 838
Major Specifications, Buick Special, Model 40A & B
Wheelbase: 118", Model 40A
Wheelbase: 121", Model 40B
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: Single Carburetor, 6.50:1
Compound Carburetor, 7.00:1
Taxable Horsepower: 30.63
Horsepower: Single Carburetor, 115 @ 3,500 RPM
Compound Carburetor, 125 @ 3,800 RPM
Torque: 210 Ft Lbs @ 2,000 RPM
Carburetor: Carter, Model 486S or Stromberg AAV-16
Rear Axle Ratio: Single Carburetor, 4.4:1
Compound Carburetor, 4.1:1
Tire Size: 6.50 X 16 Inches; Pressures: 25 Front & 30 Rear
Capacities, Buick Special, Model 40A & B
Cooling System: 13 Quarts
Fuel Tank: 18 Gallons
Engine Oil: 6 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, 90; Winter, 90
Rear Axle Capacity: 3 Pints
Grade of Oil: Summer, 90H; Winter, 90H
Beginning Engine Number, Buick Special, Series 40A & B: 4-4074859
Tune-Up Data, Buick Special, Series 40A & B
Spark Plug Gap: .025"
Spark Plug Type: Champion J-8 or UJ-12 or equivalent
With 10mm Heads: Champion Y-4-A or UY-6 or equivalent
Ignition Point Gap: .015"
Cam Angle: 25 Degrees
Ignition Timing Mark & Location: "ADV" Mark on Flywheel
Firing Order: 16258374
Tappet Clearance, Hot:
Intake: .015" Exhaust: .015"
Cylinder Head Tension: 65-70 Ft Lbs
Valve Data, Buick Special, Series 40A & B
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"
Piston & Ring Data, Buick Special, Series 40A & B
Pistons Removed from Above
Piston Clearance (Minimum):
Top Land: .023"
Top of Skirt: .0018"
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"
Engine Bearing Data, Buick Special, Series 40A & B
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
Brake Data, Buick Special, Series 40A & B
Lining Material: Primary Shoe, Woven; Secondary Shoe, Molded
Length of Lining Per Wheel: 22-11/16"
Width of Lining: 1-3/4"
Thickness of Lining: 3/16"
Brake Pedal Free Play: 1"
Wheel Alignment Data, Buick Special, Series 40A & B
Caster: +3/8 Degrees
Camber: +1/2 Degrees
Toe In: 1/32"
Kingpin Inclination: 3-1/2 Degrees
Rear Axle Data, Buick Special, Series 40
Ring Gear & Pinion Backlash: .006"-.010"
Drive Pinion Adjustment: Shims
Drive Pinion Bearing Adjustment: None
Axle Shaft End Play: .000"-.008"
Buick Super, Series 50, 8 Cylinder
Body Data & Pricing:
4 Door Trunk Sedan, 6 Passenger, Model 51
Base Price: $1,185; Shipping Weight: 3,770 Pounds; Production Total: 57,367
4 Door Convertible Phaeton, 6 Passenger, Model 51C
Base Price: $1,555; Shipping Weight: 4,015 Pounds; Production Total: 467
2 Door Business Coupe, 3 Passenger, Model 56
Base Price: $1,031; Shipping Weight: 3,620 Pounds; Production Total: 2,449
2 Door Convertible Coupe, 6 Passenger, Model 56C
Base Price: $1,267; Shipping Weight: 3,810 Pounds; Production Total: 12,181
2 Door Sport Coupe, 6 Passenger, Model 56S
Base Price: $1,113; Shipping Weight: 3,670 Pounds; Production Total: 19,603
Major Specifications, Buick Super, Series 50
Wheelbase: 121"
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: 7.00:1
Taxable Horsepower: 30.63
Horsepower: 125 @ 3,800 RPM
Torque: 278 Ft Lbs @ 2,000 RPM
Carburetor: Carter, Model 509S or Stromberg AAV-16
Rear Axle Ratio: 4.4:1
Tire Size: 6.50 X 16 Inches; Pressures: 25 Front & 30 Rear
Capacities, Buick Super, Model 50
Cooling System: 13 Quarts
Fuel Tank: 18 Gallons
Engine Oil: 6 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, 90; Winter, 90
Rear Axle Capacity: 3 Pints
Grade of Oil: Summer, 90H; Winter, 90H
Beginning Engine Number, Buick Super, Series 50: 5-4074859
Tune-Up Data, Buick Super, Series 50
Spark Plug Gap: .025"
Spark Plug Type: Champion J-8 or UJ-12 or equivalent
With 10mm Heads: Champion Y-4-A or UY-6 or equivalent
Ignition Point Gap: .015"
Cam Angle: 25 Degrees
Ignition Timing Mark & Location: "ADV" Mark on Flywheel
Firing Order: 16258374
Tappet Clearance, Hot:
Intake: .015" Exhaust: .015"
Cylinder Head Tension: 65-70 Ft Lbs
Valve Data, Buick 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"
Piston & Ring Data, Buick Super, Series 50
Pistons Removed from Above
Piston Clearance (Minimum):
Top Land: .023"
Top of Skirt: .0018"
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"
Engine Bearing Data, Buick 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"-.0025"
Crankshaft End Play: .004:-.008"
Main Bolt Tension: 90-100 Ft Lbs
Brake Data, Buick Super, Series 50
Lining Material: Primary Shoe, Woven; Secondary Shoe, Molded
Length of Lining Per Wheel: 22-11/16"
Width of Lining: 1-3/4"
Thickness of Lining: 3/16"
Brake Pedal Free Play: 1"
Wheel Alignment Data, Buick Super, Series 50
Caster: +3/8 Degrees
Camber: +1/2 Degrees
Toe In: 1/32"
Kingpin Inclination: 3-1/2 Degrees
Rear Axle Data, Buick Super, Series 50
Ring Gear & Pinion Backlash: .006"-.010"
Drive Pinion Adjustment: Shims
Drive Pinion Bearing Adjustment: None
Axle Shaft End Play: .000"-.008"
Buick Century, Series 60, 8 Cylinder
Body Data & Pricing:
4 Door Trunk Sedan, 6 Passenger, Model 61
Base Price: $1,288; Shipping Weight: 4,239; Production Total: 15,027
2 Door Business Coupe, 3 Passenger, Model 66
Base Price: $1,195; Shipping Weight: 4,093; Production Total: 220
2 Door Sedanette, 6 Passenger, Model 66S
Base Price: $1,241; Shipping Weight: 4,157 Pounds; Production Total: 5,521
Major Specifications, Buick Century, Model 60
Wheelbase: 126"
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: 7.00:1
Taxable Horsepower: 37.81
Horsepower: 165 @ 3,800 RPM
Torque: 278 Ft Lbs @ 2,000 RPM
Carburetor: Stromberg AAV-16 or Carter 509S or 510S
Rear Axle Ratio: 3.90:1
Tire Size: 7.00 X 15; Pressures: 25 Front & 30 Rear
Capacities, Buick Century, Model 60
Cooling System: 16-3/4 Quarts
Fuel Tank: 18 Gallons
Engine Oil: 8 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, 90; Winter, 90
Rear Axle Capacity: 3 Pints
Grade of Oil: Summer, 90H; Winter, 90H
Beginning Engine Number, Buick Century, Series 60: 6-4085000
Tune-Up Data, Buick Century, Series 60
Spark Plug Gap: .025"
Spark Plug Type: Champion J-8 or UJ-12 or equivalent
With 10mm Heads: Champion Y-4-A or UY-6 or equivalent
Ignition Point Gap: .015"
Cam Angle: 25 Degrees
Ignition Timing Mark & Location: "ADV" on Flywheel
Firing Order: 16258374
Tappet Clearance, Hot:
Intake: .015" Exhaust: .015"
Cylinder Head Tension: 65-70 Ft Lbs
Valve Data, Buick Century, Series 60
Tappet Clearance, Running Hot:
Intake: .015"
Exhaust: .015"
Tappet Clearance for Timing:
Intake: .015"
Exhaust: .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 Century, Series 60
Pistons Removed from Above
Piston Clearance (Minimum):
Top Land: .026"
Top of Skirt: .002"
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"
Engine Bearing Data, Buick Century, Series 60
Camshaft End Play: .004"-.008"
Camshaft Bearing Clearance: .0005"-.0035"
Conecting Rod Bearing Journal Diameter: 2.248"-2.249"
Connecting Rod Bearing Clearance: .0008"-.0018"
Connecting Rod End Play: .005"-.010"
Connecting Rod Bearing 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 Century, Series 60
Lining Material: Primary Shoe, Woven; Secondary Shoe, Molded
Length of Lining Per Wheel: 22-15/16"
Width of Lining: 2-1/4"
Thickness of Lining: 3/16"
Brake Pedal Free Play: 1"
Wheel Alignment Data, Buick Century, Series 60
Caster: +3/8 Degrees
Camber: +1/2 Degrees
Toe In: 1/32"
Kingpin Inclination: 3-1/2 Degrees
Rear Axle Data, Buick Century, Series 60
Ring Gear & Pinion Backlash: .006"-.010"
Drive Pinion Adjustment: Shims
Drive Pinion Bearing Adjustment: None
Axle Shaft End Play: .000"-.008"
Buick Roadmaster, Series 70, 8 Cylinder
Body Data & Pricing:
4 Door Convertible Phaeton, 6 Passenger, Model 71C
Base Price: $1,457; Shipping Weight: 4,285 Pounds; Production Total: 312
4 Door Trunk Sedan, 6 Passenger, Model 71
Base Price: $1,364; Shipping Weight: 4,024 Pounds; Production Total: 10,431
2 Door Convertible Coupe, 6 Passenger, Model 76C
Base Price: $1,775; Shipping Weight: 4,451 Pounds; Production Total: 1,845
2 Door Sport Coupe, 6 Passenger, Model 76S
Base Price: $1,282; Shipping Weight: 4,109 Pounds; Production Total: 2,784
Major Specifications, Buick Roadmaster, Model 70
Wheelbase: 126"
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: 7.00:1
Taxable Horsepower: 37.81
Horsepower: 165 @ 3,800 RPM
Torque: 278 Ft Lbs @ 2,000 RPM
Carburetor: Stromberg AAV-16, or Carter 509S or 510S
Rear Axle Ratio: 3.90:1
Tire Size: 7.00 X 15 Inches; Pressures: 25 Front & 30 Rear
Capacities, Buick Roadmaster, Model 70
Cooling System: 16-3/4 Quarts
Fuel Tank: 18 Gallons
Engine Oil: 8 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, 90; Winter, 90
Rear Axle Capacity: 3 Pints
Grade of Oil: Summer, 90H; Winter, 90H
Beginning Engine Number, Buick Roadmaster, Series 70: 7-4085000
Tune-Up Data, Buick Roadmaster, Series 70
Spark Plug Gap: .025"
Spark Plug Type: Champion J-8 or UJ-12 or equivalent
With 10mm Heads: Champion Y-4-A or UY-6 or equivalent
Ignition Point Gap: .015"
Cam Angle: 25 Degrees
Ignition Timing Mark & Location: "ADV" Mark on Flywheel
Firing Order: 16258374
Tappet Clearance, Hot:
Intake: .015" Exhaust: .015"
Cylinder Heat Tension: 65-70 Ft Lbs
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 Roadmaster, Series 70
Piston Removed from Above
Piston Clearance (Minimum):
Top Land: .026"
Top of Skirt: .002"
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 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 Roadmaster, Series 70
Lining Material: Primary Shoe, Woven; Secondary Shoe, Molded
Length of Lining Per Wheel: 22-15/16"
Width of Lining: 2-1/4"
Thickness of Lining: 3/16"
Brake Pedal Free Play: 1"
Wheel Alignment, Buick Roadmaster, Series 70
Caster: +3/8 Degrees
Camber: +1/2 Degrees
Toe In: 1/32"
Kingpin Inclination: 3-1/2 Degrees
Rear Axle Data, Buick Roadmaster, Series 70
Ring Gear & Pinion Backlash: .006"-.010"
Drive Pinion Adjustment: Shims
Drive Pinion Bearing Adjustment: None
Axle Shaft End Play: .000"-.008"
Buick Limited, Series 90, 8 Cylinder
Body Data & Pricing:
4 Door Trunk Sedan, 8 Passenger, Model 90
Base Price: $2,360; Shipping Weight: 4,680 Pounds; Production Total: 885
4 Door Limousine, 8 Passenger, Model 90L
Base Price: $2,465; Shipping Weight: 4,760 Pounds; Production Total: 605
4 Door Trunk Sedan, 6 Passenger, Model 91
Base Price: $2,155; Shipping Weight: 4,575 Pounds; Production Total: 1,223
Formal Sedan, 6 Passenger, Model 90F
Base Price: $2,310; Shipping Weight: 4,665 Pounds; Production Total: 293
Major Specifications, Buick Limited, Model 90
Wheelbase: 139"
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: 7.00:1
Taxable Horsepower: 37.81
Horsepower: 165 @ 3,800 RPM
Torque: 278 Ft Lbs @ 2,000 RPM
Carburetor: Stromberg AAV-16 AA1 or Carter 509S, 510S
Rear Axle Ratio: 4.2:1
Tire Size: 7.50 X 16 Inches; Pressures: 25 Front & 30 Rear
Capacities, Buick Limited, Model 90
Cooling System: 18 Quarts
Fuel Tank: 21 Gallons
Engine Oil: 8 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, 90; Winter 90
Rear Axle Capacity: 4 Pints
Grade of Oil: Summer, 90H; Winter 90H
Beginning Engine Number, Buick Limited, Series 90: 9-4085000
Tune-Up Data, Buick Limited, Series 90
Spark Plug Gap: .025"
Spark Plug Type: Champion J-8 or UJ-12 or equivalent
With 10mm Heads: Champion Y-4-A or UY-6 or equivalent
Ignition Point Gap: .015"
Cam Angle: 25 Degrees
Ignition Timing Mark & Location: "ADV" Mark on Flywheel
Firing Order: 16258374
Tappet Clearance, Hot:
Intake: .015"
Exhaust: .015"
Cylinder Head Tension: 65-70 Ft Lbs
Valve Data, Buick Limited, Series 90
Tappet Clearance, Running Hot:
Intake: .015"
Exhaust: .015"
Tappet Clearance for Timing:
Intake: .015"
Exhaust: .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 Limited, Series 90
Piston Removed from Above
Piston Clearance (Minimum):
Top of Land: .026"
Top of Skirt: .002"
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"
Engine Bearing Data, Buick Limited, Series 90
Camshaft End Play: .004"-.008"
Camshaft Bearing Clearance: .0005"-.0035"
Connecting Rod Bearing Journal Diameter: 2.248"-2.249"
Connecting Rod Bearing Clearance: .008"-.018"
Conectng 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 Limited, Series 90
Lining Material: Primary Shoe, Woven; Secondary Shoe, Molded
Length of Lining Per Wheel: 26-13/16"
Width of Lining: 2"
Thickness of Lining: 1/4"
Brake Pedal Free Play: 1"
Wheel Allignment Data, Buick Limited, Series 90
Caster: +3/8 Degrees
Camber: +1/4 Degrees
Toe In: 1/32"
Kingpin Inclination: 4-3/4 Degrees
Rear Axle Data, Buick Limited, Series 90
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 60, 70 & 90:
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 # 1107005
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 60, 70 & 90:
Starter # 1107908
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 40:
Carburetor Model: AAV-16
Carburetor Part # A-380029
Code # 7-37
Repair Kit # RK-72
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: .041"
Fast Idle Setting: 53
Choke Unloader Setting: 11/64"
Stromberg Carburetor Adjustments, Series 40 & 50:
Carburetor Model: AAV-16
Carburetor Part # 380106
Code # 7-66
Repair Kit # RK-72
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: .041"
Fast Idle Setting: 53
Choke Unloader Setting: 11/64"
Stromberg Carburetor Adjustments, Series 40 & 50:
Carburetor Model: AA-1
Carburetor Part # 380067
Code # 7-47
Repair Kit # RK-115
Fuel Level: Fuel should be at level of sight plug hole, engine idling
Throttle Position for Economizer Valve: None
Throttle Valve Location for Idle: .022"
Throttle Valve Location for Vacuum Spark Control: None
Fast Idle Setting: None
Choke Unloader Setting: None
Stromberg Carburetor Adjustments, Series 50:
Carburetor Model: AAV-16
Carburetor Part # 380066
Code # 7-46
Repair Kit # RK-114
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: .010"
Throttle Valve Location for Vacuum Spark Control: .080"
Fast Idle Setting: 53
Choke Unloader Setting: 11/64"
Stromberg Carburetor Adjustments, Series 60, 70, & 90:
Carburetor Model: AA-1
Carburetor Part # 380065
Code # 7-45A
Repair Kit # RK-114
Fuel Level: Fuel should be at level of sight plug hole, engine idling
Throttle Position for Economizer Valve: None
Throttle Valve Location for Idle: .022"
Throttle Valve Location for Vacuum Spark Control: None
Fast Idle Setting: None
Choke Unloader Setting: None
Stromberg Carburetor Adjustments, Series 60, 70, & 90:
Carburetor Model: AAV-16
Carburetor Part # 380064
Code # 7-44
Repair Kit # RK-116
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: .010"
Throttle Valve Location for Vacuum Spark Control: .080"
Fast Idle Setting: 53
Choke Unloader Setting: 11/64"
Carter Carburetor Specifications, Series 40:
Carburetor Model #WCD
Carburetor Part # 487S
Casting # 324
Repair Kit # 1098A
Float Level: 3/16"
Idle Screw Setting, 1/2-1-1/2 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 60, 70, & 90:
Carburetor Model #WCD
Carburetor Part # 490S
Casting # 324 or 535
Repair Kit # Not Available
Float Level: 3/16"
Idle Screw Setting, 1/4-1-1/4 Turns to Open
Metering Rod Gauge: T109-152
Pump Travel: 21/64"
Anit-Percolator Setting: None
Unloader Setting: 3/16"
Fast Idle Setting: .015"
Choke Lockout Adjustment: None
Carter Carburetor Specifications, Series 60, 70, & 90:
Carburetor Model #WCD
Carburetor Part # 491S
Casting # 346
Repair Kit # Not Available
Float Level: 3/16"
Idle Screw Setting, 1/4-1-1/4 Turns to Open
Metering Rod Gauge: None
Pump Travel: None
Anit-Percolator Setting: None
Unloader Setting: None
Fast Idle Setting: None
Choke Lockout Adjustment: None
Carter Carburetor Specifications, Series 50:
Carburetor Model #WCD
Carburetor Part # 509S
Casting # 324 or 535
Repair Kit # Not Available
Float Level: 9/64"
Idle Screw Setting, 1/4-1-1/4 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 50:
Carburetor Model #WCD
Carburetor Part # 510S
Casting # 346
Repair Kit # Not Available
Float Level: 3/16"
Idle Screw Setting, 1/4-1-1/4 Turns to Open
Metering Rod Gauge: None
Pump Travel: None
Anit-Percolator Setting: None
Unloader Setting: None
Fast Idle Setting: None
Choke Lockout Adjustment: None
Carter Carburetor Specifications, Series 50:
Carburetor Model #WCD
Carburetor Part # 528S
Casting # 324 or 535
Repair Kit # 1315A
Float Level: 3/16"
Idle Screw Setting, 1/4-1-1/4 Turns to Open
Metering Rod Gauge: T109-152
Pump Travel: 16/64", Long Stroke
Anit-Percolator Setting: None
Unloader Setting: 3/16"
Fast Idle Setting: .012"
Choke Lockout Adjustment: None
Carter Carburetor Specifications, Series 50:
Carburetor Model #WCD
Carburetor Part # 529S
Casting # 346
Repair Kit # 1315A
Float Level: 3/16"
Idle Screw Setting, 1/4-1-1/4 Turns to Open
Metering Rod Gauge: None
Pump Travel: None
Anit-Percolator Setting: None
Unloader Setting: None
Fast Idle Setting: None
Choke Lockout Adjustment: None
Carter Carburetor Specifications, Series 60, 70, & 90:
Carburetor Model #WCD
Carburetor Part # 535S
Casting # 324 or 535
Repair Kit # 1316A
Float Level: 3/16"
Idle Screw Setting, 1/4-1-1/4 Turns to Open
Metering Rod Gauge: T109-152
Pump Travel: 14/64", Shot Stroke
Anit-Percolator Setting: None
Unloader Setting: 3/16"
Fast Idle Setting: .015"
Choke Lockout Adjustment: None
Carter Carburetor Specifications, Series 60, 70, & 90:
Carburetor Model #WCD
Carburetor Part # 534S
Casting # 331
Repair Kit # 1316A
Float Level: 3/16"
Idle Screw Setting, 1/4-1-1/4 Turns to Open
Metering Rod Gauge: None
Pump Travel: None
Anit-Percolator Setting: None
Unloader Setting: None
Fast Idle Setting: None
Choke Lockout Adjustment: None
Carter Carburetor Specifications, Series 50:
Carburetor Model #WCD
Carburetor Part # 543S
Casting # 409
Repair Kit # 1315A
Float Level: 3/16"
Idle Screw Setting, 1/4-1-1/4 Turns to Open
Metering Rod Gauge: None
Pump Travel: None
Anit-Percolator Setting: None
Unloader Setting: None
Fast Idle Setting: None
Choke Lockout Adjustment: None
Carter Carburetor Specifications, Series 60, 70, & 90:
Carburetor Model #WCD
Carburetor Part # 544S
Casting # 409
Repair Kit # 1316A
Float Level: 3/16"
Idle Screw Setting, 1/4-1-1/4 Turns to Open
Metering Rod Gauge: T109-113
Pump Travel: None
Anit-Percolator Setting: None
Unloader Setting: None
Fast Idle Setting: None
Choke Lockout Adjustment: None
Fuel Pump Data:
Pump Model: AJ
Maximum Pressure: 4 PSI
Dash Gauge Manufacturer:
Gasoline, Oil Pressure, Temperature, & Ammeter: AC
1941 Buick Beginning Serial Numbers, All Series:
1-3880012, Flint Michigan
2-3892008, Southgate, California
3-3897008, Linden, New Jersey
Popular Options, All Series:
Electric Clock on Special, Shortwave Radio, Underseat Heater & Defroster, Windshield Washer, Non-Glare Mirrors, Fender Skirts, Fog Lights, Pushbutton Radio, Dash Heater, Dual Defroster, Compound Carburetion, Hill Holder
1941 Buick Paint Codes & Colors
Code Color PPG Code #
560 Black 9200
561 Ranier Blue 10070
562 Verde Green Dark 40072
563 Royal Maroon Poly 50014
564 Monterey Blue Poly 10071
565 Lancaster Gray Poly 30111
566 Chenanga Gray Poly 30058
567 Touquet Beige 30110
568 Sienna Rust 70033
569 Ridge Green Poly 40046
570 Ludington Green 40071
577 English Green 40073
578 Titan Maroon 50015
580 Mermaid Green 40088
581 Cedar Green 40089
584 Yakima Gray Poly 30079
Silver French Gray 30051
Pearl Gray Poly 30071
Two Tones
572 Silver French Gray Poly Upper & Lancaster Gray Lower
573 Chenanga Gray Poly Upper & Ridge Green Poly Lower
574 Pearl Gray Poly Upper & Black Lower
575 Ludington Green Upper & English Green Lower
576 Pearl Gray Poly Upper & Monterey Blue Poly Lower
579 Mermaid Green Upper & Cedar Green Lower
1941 Buick Historical Data:
Model Year introduction of the 1941 Buick was in October 13, 1940.
Model Year Production: 377,428, including 7,597 stripped chasis.
The 2 way hood, which could be lifted from either side, was introduced.
Copyright 1999, Custom Solutions & Services