1968 BUICK SPECIAL, SKYLARK &
SPORT WAGON
Models:
Buick Special, DeLuxe Model, Series 43300, 6 Cylinder
Buick Special, DeLuxe Model, Series 43400, 8 Cylinder
Buick Sport Wagon, Series 44500, 8 Cylinder
Buick Sport Wagon Custom, Series 44800, 8 Cylinder
Buick Skylark, Series 43500, 6 & 8 Cylinder
Buick Skylark Custom, Series 44400, 8 Cylinder
Buick Skylark GS 350, Series 43400, 8 Cylinder
Buick Skylark GS 400, Series 44600, 8 Cylinder
Buick Special:
DeLuxe Model, Body Data & Pricing:
4 Door Sedan, 6 Passenger, Model 43369,
Base Price: $3,039; Shipping Weight: 3,336 Pounds
Production Total: 16,571
2 Door Coupe, 6 Passenger, Model 43327
Base Price: $2,988; Shipping Weight: 3,244 Pounds
Production Total: 21,988
4 Door Station Wagon, 6 Passenger, Model 43335
Base Price: $3,371; Shipping Weight: 3,670 Pounds
Production Total: 10,916
Total Special Production: 49,475
Buick Sport Wagon:
4 Door Station Wagon, 9 Passenger, Model 44465
Base Price: $3,499; Shipping Weight: 4,118 Pounds
Production Total: 6,063
4 Door Station Wagon, 6 Passenger, Model 44455
Base Price: $3,341; Shipping Weight: 3,975 Pounds
Production Total: 5,916
Buick Custom Sport Wagon:
4 Door Station Wagon, 9 Passenger, Model 44865
Base Price: $3,869; Shipping Weight: 4,118 Pounds
Production Total: 6,295
4 Door Station Wagon, 6 Passenger, Model 44855
Base Price: $3,711; Shipping Weight: 3,975 Pounds
Production Total: 4,614
Total Sport Wagon Production: 22,888
Buick Skylark:
4 Door Sedan, 6 Passenger, Model 43569,
Base Price: $3,141; Shipping Weight: 3,374 Pounds
Production Total: 27,384
2 Door Hardtop, 6 Passenger, Model 43537
Base Price: $3,163; Shipping Weight: 3,286 Pounds
Production Total: 32,795
Buick Skylark Custom:
4 Door Sedan, 6 Passenger, Model 44469,
Base Price: $3,294; Shipping Weight: 3,377 Pounds
Production Total: 8,066
2 Door Hardtop, 6 Passenger, Model 44437
Base Price: $3,326; Shipping Weight: 3,344 Pounds
Production Total: 44,143
4 Door Hardtop, 6 Passenger, Model 44439,
Base Price: $3,478; Shipping Weight: 3,413 Pounds
Production Total: 12,984
2 Door Convertible Coupe, 6 Passenger, Model 44467
Base Price: $3,468; Shipping Weight: 3,394 Pounds
Production Total: 8,188
Total Skylark Production: 133,560.
Buick Skylark GS 350:
2 Door Coupe, 6 Passenger, Model 43437
Base Price: $3,295; Shipping Weight: 3,375 Pounds
Production Total: 8,317
Buick Skylark GS 400:
2 Door Hardtop Coupe, 6 Passenger, Model 44637
Base Price: $3,526; Shipping Weight: 3,514 Pounds
Production Total: 10,743
2 Door Convertible Coupe, 6 Passenger, Model 44667
Base Price: $3,672; Shipping Weight: 3,547 Pounds
Production Total: 2,454
Total Skylark GS 400 Production: 13,197.
Chassis:
Wheelbase:
Special & Skylark: 112"
Sport Wagons: 121"
Tire Sizes:
Special & Skylark: 7.75 X 14"
Sport Wagon: 8.45 X 15"
Major Engine Specifications, Buick Special, Inline 6 Engine, 155 H.P.:
Engine Type: Overhead Valve Inline 6 Cylinder
Engine Bore & Stroke: 3.875" X 3.53"
Engine Displacement: 250 Cu. In.
Compression Ratio: 8.50:1
Taxable Horsepower: 36.04
Horsepower: 155 @ 4,200 RPM
Torque: 235 Ft. Lbs. @ 1,600 RPM
Normal Oil Pressure: 30-45 PSI
Carburetor: 1 Barrel
Major Engine Specifications, 350 Cubic Inch V-8 Engine, 230 H.P.:
Engine Type: Overhead Valve V-Type 8 Cylinder
Engine Bore & Stroke: 3.80" X 3.85"
Engine Displacement: 350 Cu. In.
Compression Ratio: 9.00:1
Taxable Horsepower: 46.21
Horsepower: 230 @ 4,400 RPM
Torque: 350 Ft. Lbs. @ 2,400 RPM
Normal Oil Pressure: 37 PSI
Carburetor: 2 Barrel
Major Engine Specifications, 350 Cubic Inch V-8 Engine, 280 H.P.:
Engine Type: Overhead Valve V-Type 8 Cylinder
Engine Bore & Stroke: 3.80" X 3.85"
Engine Displacement: 350 Cu. In.
Compression Ratio: 10.25:1
Taxable Horsepower: 46.21
Horsepower: 280 @ 4,800 RPM
Torque: 375 Ft. Lbs. @ 3,200 RPM
Normal Oil Pressure: 37 PSI
Carburetor: 4 Barrel
Major Engine Specifications, 400 Cubic Inch V-8 Engine, 340 H.P.:
Engine Type: Overhead Valve V-Type 8 Cylinder
Engine Bore & Stroke: 4.040" X 3.90"
Engine Displacement: 400 Cu. In.
Compression Ratio: 10.25:1
Taxable Horsepower: 52.23
Horsepower: 340 @ 5,000 RPM
Torque: 440 Ft. Lbs. @ 3,200 RPM
Normal Oil Pressure: 30 PSI
Carburetor: 4 Barrel
Engine Available by Model:
155 HP I-6, 250 Cu. In. Standard on Special & Skylark
230 HP V-8, 350 Cu. In. Standard on Sport Wagon & Skylark Deluxe. Optional on Special & Skylark
280 HP V-8, 350 Cu. In. Standard on GS-350. Optional on Sport Wagon, Special Deluxe & Skylark
340 HP V-8, 400 Cu. In. Standard on Skylark GS 400 & Sport Wagon 400.
Capacities, Special, 6 Cylinder:
Cooling System:
Without Heater: 10 Quarts
With Heater: 11.3 Quarts
With Air Conditioning: 13 Quarts
Radiator Cap Pressure:
With Air Conditioning: 15 PSI
Without Air Conditioning: 15 PSI
Thermostat Opening: 195 Degrees
Fuel Tank: 20 Gallons
Engine Oil: 4 Quarts*
Manual Transmission Capacity:
3 Speed: 3-3/8 Pints
Automatic Transmission Capacity:
Total Capacity: 9-1/2 Quarts
Oil Pan Only: 2-1/2 Quarts
Rear Axle Capacity: 2.9 Pints
* Add 1 Quart for Oil Filter.
Capacities, Special, 8 Cylinder, 350 Cu. In. Engine:
Cooling System:
Without Heater: 12.62 Quarts
With Heater: 13.5 Quarts
With Air Conditioning: 13.52 Quarts
Radiator Cap Pressure:
With Air Conditioning: 15 PSI
Without Air Conditioning: 15 PSI
Thermostat Opening: 190 Degrees
Fuel Tank: 20 Gallons
Engine Oil: 4 Quarts*
Manual Transmission Capacity:
3 Speed: 3-3/8 Pints
Automatic Transmission Capacity:
Total Capacity: 9-1/2 Quarts
Oil Pan Only: 2-1/2 Quarts
Rear Axle Capacity: 2.9 Pints
* Add 1 Quart for Oil Filter.
Capacities, 8 Cylinder, GS 350 Cu. In. Engine:
Cooling System:
Without Heater: 12.62 Quarts
With Heater: 13.45 Quarts
With Air Conditioning: 13.52 Quarts
Radiator Cap Pressure:
With Air Conditioning: 15 PSI
Without Air Conditioning: 15 PSI
Thermostat Opening: 190 Degrees
Fuel Tank: 20 Gallons
Engine Oil: 4 Quarts*
Manual Transmission Capacity:
3 Speed: 3.4 Pints
4 Speed: 3 Pints
Automatic Transmission Capacity:
Total Capacity: 9-1/2 Quarts
Oil Pan Only: 2-1/2 Quarts
Rear Axle Capacity: 2.9 Pints
* Add 1 Quart for Oil Filter.
Capacities, 8 Cylinder, 400 Cu. In. Engine, Skylark Gran Sport:
Cooling System:
Without Heater: 15.34 Quarts
With Heater: 16.17 Quarts
With Air Conditioning: 16.67 Quarts
Radiator Cap Pressure:
With Air Conditioning: 15 PSI
Without Air Conditioning: 15 PSI
Thermostat Opening: 190 Degrees
Fuel Tank: 20 Gallons
Engine Oil: 4 Quarts*
Manual Transmission Capacity:
3 Speed: 3-1-2 Pints
4 Speed: 3 Pints
Automatic Transmission Capacity:
Total Capacity: 11-1/2 Quarts
Oil Pan Only: 2-1/2 Quarts
Rear Axle Capacity: 2.9 Pints
* Add 1 Quart for Oil Filter.
Tune-Up Data, 6 Cylinder Engine, Manual Transmission:
Spark Plug Type: AC 46N
Spark Plug Gap: .030"
Ignition Point Gap: .019"
Distributor Cam Angle: 32 Degrees
Firing Order: 1-5-3-6-2-4
Ignition Timing Mark & Location: TDC on Damper
Engine Idle Speed:
Manual Transmission: 700 RPM (With A/C full on, if so equipped)
Compression Pressure: 130 PSI
Fuel Pump Pressure: 4 to 5 PSI
Tune-Up Data, 6 Cylinder Engine, Manual Transmission:
Spark Plug Type: AC 46N
Spark Plug Gap: .030"
Ignition Point Gap: .019"
Distributor Cam Angle: 32 Degrees
Firing Order: 1-5-3-6-2-4
Ignition Timing Mark & Location: 4 Degrees BTDC on Damper
Engine Idle Speed:
Automatic Transmission: 600 RPM, in Drive (With A/C full on, if so equipped)
Compression Pressure: 130 PSI
Fuel Pump Pressure: 4 to 5 PSI
Tune-Up Data, All 8 Cylinder, 350 Cu. In. Engine:
Spark Plug Type: AC 45TS
Spark Plug Gap: .030"
Ignition Point Gap: .016" (Turn Screw in until engine misfires, then back off 1/2 turn.)
Distributor Cam Angle: 30 Degrees
Firing Order: 1-8-4-3-6-5-7-2
Ignition Timing Mark & Location: TDC
Engine Idle Speed:
Manual Transmission: 700 RPM (With A/C full on, if so equipped)
Automatic Transmission: 550 RPM, in Drive (With A/C full on, if so equipped)
Compression Pressure: 165 PSI
Fuel Pump Pressure: 4-1/4 to 5-3/4 PSI
Tune-Up Data, All 8 Cylinder, 400 Cu. In. Engine:
Spark Plug Type: AC 44TS
Spark Plug Gap: .035"
Ignition Point Gap: .016" (Turn Screw in until engine misfires, then back off 1/2 turn.)
Distributor Cam Angle: 30 Degrees
Firing Order: 1-8-4-3-6-5-7-2
Ignition Timing Mark & Location: 2-1/2 Degrees BTDC
Engine Idle Speed:
Manual Transmission: 700 RPM (With A/C full on, if so equipped)
Automatic Transmission: 600 RPM, in Drive (With A/C full on, if so equipped)
Compression Pressure: 180 PSI
Fuel Pump Pressure: 5-1/2 to 7 PSI
Valve Data, 6 Cylinder 250 Cu. In. Engine:
Valve Lash: 1 Turn
Valve Seat Angle:
Seat: 46 Degrees
Face: 45 Degrees
Valve Spring Height, Installed: 1.66"
Minimum Valve Spring Pressure: 185 Pounds @ 1.27"
Valve Stem Clearance:
Intake: Tapered .001"-.0027"
Exhaust: Tapered .001"-.0027"
Valve Stem Diameter:
Intake: Tapered .3410"-.3417"
Exhaust: Tapered .3410-.3417"
Valve Data, 8 Cylinder 350 Cu. In. Engines:
Valve Lash: Hydralic
Valve Seat Angle:
Seat: 45 Degrees
Face: 45 Degrees
Valve Spring Height, Installed: 1.72"
Minimum Valve Spring Pressure: 180 Pounds @ 1.34"
Valve Stem Clearance:
Intake: Tapered .0015"-.0035"
Exhaust: Tapered .0015"-.0035"
Valve Stem Diameter:
Intake: Tapered .3720"-.3730"
Exhaust: Tapered .3720"-.3730"
Valve Data, 8 Cylinder 400 Cu. In. Engine:
Valve Lash: Hydralic
Valve Seat Angle:
Seat: 45 Degrees
Face: 45 Degrees
Valve Spring Height, Installed: 1.89"
Minimum Valve Spring Pressure: 177 Pounds @ 1.45"
Valve Stem Clearance:
Intake: Tapered .0015"-.0035"
Exhaust: Tapered .0015"-.0035"
Valve Stem Diameter:
Intake: Tapered .3720"-.3730"
Exhaust: Tapered .3720-.3730"
Piston, Pins, Rings, Crankshaft, & Bearings, 250 Cu. In. I-6 Engine:
Piston Clearance: .0005"-.0011"
Ring End Gap:
Compression: .010"
Oil Control: .015"
Wrist Pin Diameter: .9271"
Rod Bearings:
Shaft Diameter: 1.999"-2.000""
Rod Bearing Clearance: .0007"-.0027"
Main Bearings:
Shaft Diameter: 2.3004"
Main Bearing Clearance: .0003"-.0029"
Thrust on Bearing #7
Shaft End Play: .002"-.006"
Piston, Pins, Rings, Crankshaft, & Bearings, 350 Cu. In. V-8 Engines:
Piston Clearance: .0008"-.0014"
Ring End Gap:
Compression: .013"
Oil Control: .015"
Wrist Pin Diameter: .9394"
Rod Bearings:
Shaft Diameter: 2.000""
Rod Bearing Clearance: .0002"-.0023"
Main Bearings:
Shaft Diameter: 2.9995"
Main Bearing Clearance: .0004"-.0015"
Thrust on Bearing #3
Shaft End Play: .003"-.009"
Piston, Pins, Rings, Crankshaft, & Bearings, 400 Cu. In. V-8 Engine:
Piston Clearance: .0007"-.0013"
Ring End Gap:
Compression: .013"
Oil Control: .015"
Wrist Pin Diameter: .9994"
Rod Bearings:
Shaft Diameter: 2.249"-2.250"
Rod Bearing Clearance: .0002"-.0023"
Main Bearings:
Shaft Diameter: 3.2500"
Main Bearing Clearance: .0007"-.0018"
Thrust on Bearing #3
Shaft End Play: .003"-.009"
Engine Tightening Specifications, 250 Cu. In. I-6 Engines:
Spark Plugs: 25 Ft. Lbs.
Cylinder Head Bolts: 95 Ft. Lbs.
Intake Manifold:
End Clamps: 20 Ft. Lbs
Center Bolts: 30 Ft. Lbs.
Exhaust Manifold:
End Clamps: 20 Ft. Lbs
Center Bolts: 30 Ft. Lbs.
Rocker Arm Cover: 5 Ft. Lbs.
Connecting Rod Cap Bolts: 35 Ft. Lbs.
Main Bearing Cap Bolts: 65 Ft. Lbs.
Flywheel to Crankshaft: 60 Ft. Lbs.
Vibration Damper or Pulley: Pressed On
Engine Tightening Specifications, 350 Cu. In. V-8 Engines:
Spark Plugs: 15 Ft. Lbs.
Cylinder Head Bolts: 75 Ft. Lbs.
Intake Manifold: 55 Ft. Lbs.
Exhaust Manifold: 18 Ft. Lbs.
Rocker Arm Shaft Bracket: 30 Ft. Lbs.
Rocker Arm Cover: 4 Ft. Lbs.
Connecting Rod Cap Bolts: 35 Ft. Lbs.
Main Bearing Cap Bolts: 95 Ft. Lbs.
Flywheel to Crankshaft: 60 Ft. Lbs.
Vibration Damper or Pulley: 140. Lbs (Minimum)
Engine Tightening Specifications, 400 Cu. In. V-8 Engine:
Spark Plugs: 15 Ft. Lbs.
Cylinder Head Bolts: 100 Ft. Lbs.
Intake Manifold: 55 Ft. Lbs.
Exhaust Manifold: 18 Ft. Lbs.
Rocker Arm Shaft Bracket: 30 Ft. Lbs.
Rocker Arm Cover: 4 Ft. Lbs.
Connecting Rod Cap Bolts: 45 Ft. Lbs.
Main Bearing Cap Bolts: 110 Ft. Lbs.
Flywheel to Crankshaft: 60 Ft. Lbs.
Vibration Damper or Pulley: 200. Lbs (Minimum)
Delco-Remy Distributor Specifications, 6 Cylinder Engine, Manual Transmission:
Distributor # 1110439
Point Opening: .019"
Cam Angle: 32 Degrees
Breaker Arm Spring Tension: 19-23 Ounces
Centrifugal Advance Data:
Advance Starts: 1 Degree @ 450 RPM
Full Advance: 16 Degrees @ 2,100 RPM
Vacuum Advance Data
Inches of Vacuum to Start Plunger Movement: 6" to 8"
Maximum Vacuum Advance: 11 Degrees @ 17" Vacuum
Delco-Remy Distributor Specifications, 6 Cylinder Engine, Automatic Transmission:
Distributor # 1110339
Point Opening: .019"
Cam Angle: 32 Degrees
Breaker Arm Spring Tension: 19-23 Ounces
Centrifugal Advance Data:
Advance Starts: 1 Degree @ 450 RPM
Full Advance: 15 Degrees @ 2,100 RPM
Vacuum Advance Data
Inches of Vacuum to Start Plunger Movement: 6" to 8"
Maximum Vacuum Advance: 11 Degrees @ 17" Vacuum
Delco-Remy Distributor Specifications, 350 Cu. In. V-8 Engine:
Distributor # 1111330
Point Opening: .016" (Turn adjusting screw in until engine misfires, then back off 1/2 turn.)
Cam Angle: 30 Degrees
Breaker Arm Spring Tension: 19-23 Ounces
Centrifugal Advance Data:
Advance Starts: 1 Degree @ 550 RPM
Full Advance: 14 Degrees @ 2,300 RPM
Vacuum Advance Data
Inches of Vacuum to Start Plunger Movement: 6" to 8"
Maximum Vacuum Advance: 8 Degrees @ 16" Vacuum
Delco-Remy Distributor Specifications, 400 Cu. In. V-8 Engine:
Distributor # 1111285
Rotation: Clockwise
Point Opening: .016" (Turn adjusting screw in until engine misfires, then back off 1/2 turn.)
Cam Angle: 30 Degrees
Breaker Arm Spring Tension: 19-23 Ounces
Centrifugal Advance Data:
Advance Starts: 1 Degree @ 550 RPM
Full Advance: 16 Degrees @ 2,300 RPM
Vacuum Advance Data
Inches of Vacuum to Start Plunger Movement: 6" to 8"
Maximum Vacuum Advance: 8 Degrees @ 16" Vacuum
Delco-Remy Alternator & Regulator Specifications, All Series:
Alternator # 1100762
Rated Output: 37 Amperes
Field Current: 12 Volts @ 80 Degrees: 2.2 to 2.6 Amperes
Cold Output @ 14 Volts
2,000 RPM: 25 Amperes
5,000 RPM: 35 Amperes
Regulator #1119515
Field Relay:
Air Gap: .015"
Point Gap: .030"
Closing Voltage: 1.5 to 3.2 Volts
Voltage Regulator:
Air Gap: .067"
Point Gap: .014"
Voltage @ 125 Degrees: 13.6 to 14.4 Volts
Alternator # 1100761
Rated Output: 37 Amperes
Field Current: 12 Volts @ 80 Degrees: 2.2 to 2.6 Amperes
Cold Output @ 14 Volts
2,000 RPM: 25 Amperes
5,000 RPM: 35 Amperes
Regulator #1119515
Field Relay:
Air Gap: .015"
Point Gap: .030"
Closing Voltage: 1.5 to 3.2 Volts
Voltage Regulator:
Air Gap: .067"
Point Gap: .014"
Voltage @ 125 Degrees: 13.6 to 14.4 Volts
Alternator # 1100802
Rated Output: 55 Amperes
Field Current: 12 Volts @ 80 Degrees: 2.2 to 2.6 Amperes
Cold Output @ 14 Volts
2,000 RPM: 32 Amperes
5,000 RPM: 50 Amperes
Regulator #1119515
Field Relay:
Air Gap: .015"
Point Gap: .030"
Closing Voltage: 1.5 to 3.2 Volts
Voltage Regulator:
Air Gap: .067"
Point Gap: .014"
Voltage @ 125 Degrees: 13.6 to 14.4 Volts
Alternator # 1100691
Rated Output: 42 Amperes
Field Current: 12 Volts @ 80 Degrees: 2.2 to 2.6 Amperes
Cold Output @ 14 Volts
2,000 RPM: 28 Amperes
5,000 RPM: 40 Amperes
Regulator #1119515
Field Relay:
Air Gap: .015"
Point Gap: .030"
Closing Voltage: 1.5 to 3.2 Volts
Voltage Regulator:
Air Gap: .067"
Point Gap: .014"
Voltage @ 125 Degrees: 13.6 to 14.4 Volts
Alternator # 1100774
Rated Output: 55 Amperes
Field Current: 12 Volts @ 80 Degrees: 2.2 to 2.6 Amperes
Cold Output @ 14 Volts
2,000 RPM: 32 Amperes
5,000 RPM: 50 Amperes
Regulator #1119515
Field Relay:
Air Gap: .015"
Point Gap: .030"
Closing Voltage: 1.5 to 3.2 Volts
Voltage Regulator:
Air Gap: .067"
Point Gap: .014"
Voltage @ 125 Degrees: 13.6 to 14.4 Volts
Note: The above alternators incude all series Buicks, including full sized models.
Delco-Remy Starting Motor Specifications, 250 Cu. In. I-6 Engine:
Starter # 1108365
Brush Spring Tension: 35 Ounces
No Load Test: 49-87 Amperes, 10.6 Volts @ 6,200 to 10,700 RPM
Resistance Test: 290-425 Amperes @ 4.2 Volts
Delco-Remy Starting Motor Specifications, 350 Cu. In. V-8 Engine:
Starter # 1108380
Brush Spring Tension: 35 Ounces
No Load Test: 65-100 Amperes, 10.6 Volts @ 3,600 to 5,100 RPM
Resistance Test: 300-360 Amperes @ 3.5 Volts
Delco-Remy Starting Motor Specifications, 400 Cu. In. V-8 Engine:
Starter # 1108354
Brush Spring Tension: 35 Ounces
No Load Test: 70-105 Amperes, 10.6 Volts @ 3,800 to 6,200 RPM
Torque Test: 480-540 Amperes, 3.0 Volts;
Rear Axle Data, All Series:
Carrier Type: Integral
Ring Gear & Pinion Backlash:
Method: Shim
Adjustment: .006"-.008"
Pinion Bearing Preload:
Method: Spacer
Adjustment:
New Bearings: 20-25 Inch Lbs.
Used Bearings: 10-15 Inch Lbs.
Differential Bearing Preload:
Method: Shim
Adjustment:
New Bearings: 35-40 Inch Lbs.
Used Bearings: 20-25 Inch Lbs.
Brake Specifications:
Special & Skylark:
Brake Drum Diameter: 9.495"-9.505"
Wheel Cylinder Bore:
Front Drum Brakes: 1-1/8"
Rear Drum Brakes: 7/8"
Master Cylinder Bore:
Disc Brakes: 1-1/8"
Drum Brakes: 1"
Power Brakes: 1"
Sport Wagon:
Brake Drum Diameter: 9.495"-9.505"
Wheel Cylinder Bore:
Front Drum Brakes: 1-1/8"
Rear Drum Brakes: 1"
Master Cylinder Bore:
Disc Brakes: 1-1/8"
Drum Brakes: 1"
Power Brakes: 1"
GS 350 & GS 400:
Brake Drum Diameter: 9.495"-9.505"
Wheel Cylinder Bore:
Front Drum Brakes: 1-1/8"
Rear Drum Brakes: 7/8"
Master Cylinder Bore:
Disc Brakes: 1-1/8"
Drum Brakes: 1"
Power Brakes: 1"
Wheel Alignment Data, All Series:
Caster: - 1/2 Degrees
Camber:
Left: + 1/2 Degrees
Right: + 1/2 Degrees
Toe In: 1/8" to 1/4"
Toe Out on Turns:
Outer Wheel: 18 Degrees, 8 Minutes
Inner Wheel: 20 Degrees
Rochester Carburetor Specifications:
Carburetor Type: 2GC
Part #: 7028140, 7028141
Float Level: 15/32"
Float Drop: 1-9/32"
Pump Rod: 1-11/32"
Idle Vent: .025"
Vacuum Break: .120"
Choke Setting: In Lower Hole
Choke Rod: .050"
Choke Unloader: .140"
Carburetor Type: Quadrajet 4MC & 4MV
Part #: 7028240
Float Level:
Early Models: 3/8"
Late Models: 7/16"
Pump Rod Hole:
Early Models: Inner Hole
Late Models: Outer Hole
Pump Rod Adjustment:
Early Models: 9/32"
Late Models: 15/32"
Idle Vent: 1/2"
Fast Idle, Bench: 2 Turns
Choke Rod: .130"
Vacuum Break: .200"
Air Valve Dashpot: .030"
Choke Unloader: .325"
Air Valve Lockout: .045"
Secondary Metering Rods: 53/64"
Air Valve/Valve Spring Windup: 1/2"
Part #: 70278242,
Float Level: 3/8"
Pump Rod Hole: Inner Hole
Pump Rod Adjustment: 9/32"
Idle Vent: 1/2"
Fast Idle, Bench: 2 Turns
Choke Rod: .130"
Vacuum Break: .180"
Air Valve Dashpot: .030"
Choke Unloader: .325"
Air Valve Lockout: .045"
Secondary Metering Rods: 53/64"
Air Valve/Valve Spring Windup: 1/2"
Part #: 7028243
Float Level: 7/16"
Pump Rod Hole: Outer Hole
Pump Rod Adjustment: 11/32"
Idle Vent: 1/2"
Fast Idle, Bench: 2 Turns
Choke Rod: .140"
Vacuum Break: .215"
Air Valve Dashpot: .030"
Choke Unloader: .325"
Secondary Metering Rods: 53/64"
Air Valve/Valve Spring Windup: 1/2"
Part #: 7028244
Float Level: 5/16"
Pump Rod Hole: Outer Hole
Pump Rod Adjustment: 13/32"
Idle Vent: 1/2"
Fast Idle, Bench: 2 Turns
Choke Rod: .130"
Vacuum Break: .200"
Air Valve Dashpot: .030"
Choke Unloader: .325"
Air Valve Lockout: .045"
Secondary Metering Rods: 53/64"
Air Valve/Valve Spring Windup: 1/2"
Part #: 7028245
Float Level: 5/16"
Pump Rod Hole: Outer Hole
Pump Rod Adjustment: 13/32"
Idle Vent: 1/2"
Fast Idle, Bench: 2 Turns
Choke Rod: .130"
Vacuum Break: .215"
Air Valve Dashpot: .030"
Choke Unloader: .325"
Secondary Metering Rods: 53/64"
Air Valve/Valve Spring Windup: 1/2"
Part #: 7028248
Float Level: 9/32"
Pump Rod Hole: Outer Hole
Pump Rod Adjustment: 13/32"
Idle Vent: 1/2"
Fast Idle, Bench: 2 Turns
Choke Rod: .130"
Vacuum Break: .180"
Air Valve Dashpot: .030"
Choke Unloader: .325"
Air Valve Lockout: .045"
Secondary Metering Rods: 53/64"
Air Valve/Valve Spring Windup: 1/2"
Rochester Monojet, M & MV:
Part #: 7028014
Initial Idle Screw Adjustment: 1-1/2-2 Turns Open
Float Level: 9/32"
Metering Rod: .100"
Idle Vent: .050"
Choke Rod: .180"
Vacuum Brak: .245"
Unloader: .350"
Part #: 7028047
Initial Idle Screw Adjustment: 1-1/2-2 Turns Open
Float Level: 5/16"
Metering Rod: .140"
Idle Vent: .020"
Choke Rod: .190"
Vacuum Brake: .275"
Unloader: .325"
Note: All Buick Carburetors for 1968 are listed including those for Buick Full Sized Models.
1968 Buick Paint Codes & Colors:
A Regal Black
B* Midnight Teal
C Arctic White
D Blue Mist
E Deep Blue
F Teal Blue Mist
G Ivory Gold Mist
K Aqua
L Medium Teal Blue Mist
M Burnished Saddle
N Maroon
P Tarpon Green Mist
R Scarlet Red
S* Olive Gold
T Desert Beige
V Charcoal
W* Silver Beige Mist
X* Buckskin
Z* Inca Silver Mist
* Riviera Colors
Popular Options, Special & Skylark:
AM Radio, Air Conditioning, Power Steering, Power Brakes, Power Windows, except 6 Cylinder; 350 Cu. In. Engine, Automatic Transmission, 4 Speed Manual Transmission, Padded Dash, Back-Up Lights, Remote Control Outside Mirror, Bucket Seats, DeLuxe Wheel covers, Simulated Wire Wheel Covers, 5 Spoke Wire Chrome Wheels, Two Tone Paint, Luggage Rack for Sport Wagons, Tachometer, Consolette for GS 350 & GS 400; Tilt Steering Wheel, Tinted Glass..
1968 Buick Historical Data:
1968 Buick Model Year Production for Buick Specials, Skylarks & Sport Wagons: 277,437.
Total Buick Production including Sport Wagons, Specials & Skylarks and Full Sized Models: 651,823.
The 14 Millionth Buick was produced in April 1968.
Promotional Model Cars Available:
Plastic: None.
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