1968 PONTIAC TEMPEST & GTO

1968 PONTIAC TEMPEST & GTO

Model Designations:

Pontiac Standard Tempest, Series 233, 6 & 8 Cylinder

Pontiac Tempest Custom, Series 235, 6 & 8 Cylinder

Pontiac Tempest Lemans, Series 237, 6 & 8 Cylinder

Pontiac Tempest Safari, Series 239, 6 & 8 Cylinder

Pontiac Tempest GTO, Series 242, 8 Cylinder

Pontiac Standard Tempest, Body Styles:

4 Door Sedan, 6 Passenger, Body Style # 23369

Base Price: $2,509; Shipping Weight: 3,307 Pounds

Total Production: 11,590

2 Door Coupe, 6 Passenger, Body Style #23327

Base Price: $2,461; Shipping Weight: 3,242 Pounds

Total Production: 19,991

Total Tempest Production: 31,581

Total with Standard Transmission: 5,876

Total with Automatic Transmission: 25,705

Pontiac Tempest Custom, Body Styles:

4 Door Sedan, 6 Passenger, Body Style # 23569

Base Price: $2,602; Shipping Weight: 3,297 Pounds

Total Production: 17,304

4 Door Hardtop, 6 Passenger, Body Style # 23539

Base Price: $2,728; Shipping Weight: 3,382 Pounds

Total Production: 6,147

2 Door Coupe, 6 Passenger, Body Style #23527

Base Price: $2,554; Shipping Weight: 3,252 Pounds

Total Production: 10,634

2 Door Hardtop, 6 Passenger, Body Style # 23537

Base Price: $2,614; Shipping Weight: 3,277 Pounds

Total Production: 40,574

2 Door Convertible, 6 Passenger, Body Style # 23567

Base Price: $2,839; Shipping Weight: 3,337 Pounds

Total Production: 3,518

4 Door Station Wagon, 6 Passenger, Body Style #23535

Base Price: $2,906; Shipping Weight: 3,667 Pounds

Total Production: 8,253

Total Tempest Custom Production: 86,430

Total with Standard Transmission: N/A

Total with Automatic Transmission: N/A

Pontiac Tempest LeMans, Body Styles:

4 Door Hardtop, 6 Passenger, Body Style # 23739

Base Price: $2,916; Shipping Weight: 3,407 Pounds

Total Production: 9,002

2 Door Coupe, 5 Passenger, Body Style # 23727

Base Price: $2,724; Shipping Weight: 3,287 Pounds

Total Production: 8,439

2 Door Hardtop, 5 Passenger, Body Style # 23737

Base Price: $2,786; Shipping Weight: 3,302 Pounds

Total Production: 110,036

2 Door Convertible, 5 Passenger, Body Style # 23767

Base Price: $3,015; Shipping Weight: 3,377 Pounds

Total Production: 8,820

Pontiac Tempest LeMans Safari, Body Styles:

4 Door Station Wagon, 6 Passenger, Body Style #23935

Base Price: $3,017; Shipping Weight: 3,677 Pounds

Total Production: 4,414

Total Tempest Lemans Production:

Passenger Cars: 136,297

Total with Standard Transmission: 12,233

Total with Automatic Transmission: 124,074

Safari Wagons: 4,414

Total with Standard Transmission: 122

Total with Automatic Transmission: 4,292

Pontiac Tempest GTO, 8 Cylinder, Body Styles:

2 Door Hardtop, 5 Passenger, Body Style # 24237

Base Price: $3,101; Shipping Weight: 3,506 Pounds

Total Production: 77,704

2 Door Convertible, 5 Passenger, Body Style # 24267

Base Price: $2,996; Shipping Weight: 3,346 Pounds

Total Production: 9,980

Total Tempest GTO Production: 87,684

Total with Standard Transmission: 36,299

Total with Automatic Transmission: 51,385

Chassis:

Wheelbase:

2 Door: 112"

4 Door: 116"

Tire Size:

Tire Sizes Not Available

Engine Availability:

Engine Horsepower Model Availability

I-6 250 Cubic Inch 175 H.P. Standard on Tempest, except GTO

I-6 250 Cubic Inch 215 H.P. Optional on Tempest, except GTO

V-8 350 Cubic Inch 265 H.P. Optional on Tempest, except GTO & LeMans.

V-8 350 Cubic Inch 320 H.P. Optional on Tempest, & Lemans except Safari Wagon

V-8 400 Cubic Inch 350 H.P. Standard on GTO

V-8 400 Cubic Inch 360 H.P. Optional on GTO

General Engine Specifications:

See 1968 Pontiac Engines & Engine Accessories:

Tune Up Specifications:

6 Cylinder, 250 Cubic Inch Engine, with 1 Barrel Carburetor:

Spark Plug Type: AC 44SN

Spark Plug Gap: .035"

Point Gap: .016"

Dwell Angle: 31-34 Degrees

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

Ignition Timing: TDC

Engine Idle Speed:

Standard Transmission: 700 RPM; 500 RPM with A/C "Off"

Automatic Transmission: 600 RPM in Drive: 500 RPM in Drive, with A/C "Of"

Fuel Pump Pressure: 4 to 5-1/4 PSI

6 Cylinder, 250 Cubic Inch Engine, with 4 Barrel Carburetor:

Spark Plug Type: AC 44SN

Spark Plug Gap: .035"

Point Gap: .016"

Dwell Angle: 31-34 Degrees

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

Ignition Timing: 5 Degrees BTDC

Engine Idle Speed:

Standard Transmission: 800 RPM; 600 RPM with A/C "Off"

Automatic Transmission: 600 RPM in Drive: 500 RPM in Drive, with A/C "Of"

Fuel Pump Pressure: 4 to 5-1/4 PSI

8 Cylinder, 350 Cubic Inch Engine:

Spark Plug Type: AC 45S

Spark Plug: Gap .035"

Point Gap: .016"

Distributor Cam Angle: 28-32 Degrees

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

Ignition Timing: 9 Degrees BTDC

Engine Idle Speed:

Standard Transmission: 650 RPM; 500 RPM with A/C "Off"

Automatic Transmission: 650 RPM in Drive; 500 RPM in Drive, with A/C "Off"

Fuel Pump Pressure: 5 to 6-1/2 PSI

8 Cylinder, 400 Cubic Inch Engines with 2 Barrel Carburetor:

Spark Plug Type: AC 45S

Spark Plug: Gap .035"

Point Gap: .016"

Distributor Cam Angle: 30 Degrees

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

Ignition Timing: 9 Degrees BTDC

Engine Idle Speed:

Standard Transmission: 800 RPM; 500 RPM with A/C "Off"

Automatic Transmission: 600 RPM in Drive, 500 in Drive with A/C "Off"

Fuel Pump Pressure: 5 to 6-1/2 PSI

8 Cylinder, 400 Cubic Inch Engines with 4 Barrel Carburetor:

Spark Plug Type: AC 45S

Spark Plug: Gap .035"

Point Gap: .016"

Distributor Cam Angle: 28-32 Degrees

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

Ignition Timing: 9 Degrees BTDC

Engine Idle Speed:

Standard Transmission: 850 RPM/ 650 RPM with A/C "Off"

Automatic Transmission: 600 RPM in Drive; 650 RPM in Drive with A/C "Off"

Fuel Pump Pressure: 5 to 6-1/2 PSI

Valve Specifications:

See 1968 Pontiac Engines & Engine Accessories:

Pistons, Rings, Wrist Pin, Crankshaft, & Bearing Data:

See 1968 Pontiac Engines & Engine Accessories:

Engine Tightening Specifications:

See 1968 Pontiac Engines & Engine Accessories:

Capacities:

6 Cylinder:

Cooling System:

With Heater: 12.1 Quarts

With Air Conditioning: 12.7 Quarts

Radiator Pressure Cap:

With Air Conditioning: 14-17 PSI

Without Air Conditioning: 14-17 PSI

Thermostat Opening: 190 Degrees

Fuel Tank: 18-1/2 Gallons

Engine Oil Refill: 6 Quarts*

Manual Transmission:

Three Speed: 3-1/2 Pints

Four Speed: 3-1/2 Pints

Hydra-Matic Transmission:

Pan Only: 2-1/2 Quarts

After Overhaul: 9-1/2 Quarts

Rear Axle: 3 Pints

* With New Oil Filter

8 Cylinder, 350 Cubic Inch Engine:

Cooling System:

With Heater: 18.6 Quarts

With Air Conditioning: 20.2 Quarts

Radiator Pressure Cap:

With Air Conditioning: 14-17 PSI

Without Air Conditioning: 14-17 PSI

Thermostat Opening: 190 Degrees

Fuel Tank: 18-1/2 Gallons

Engine Oil Refill: 6 Quarts*

Manual Transmission:

Three Speed: 2.8 Pints

Four Speed: 2.5 Pints

Hydra-Matic Transmission:

Pan Only: 2-1/2 Quarts

After Overhaul: 9-1/2 Quarts

Rear Axle: 3 Pints

* With New Oil Filter

8 Cylinder, Tempest, 400 Cubic Inch Engine:

Cooling System:

With Heater: 17.8 Quarts

With Air Conditioning: 19.4 Quarts

Radiator Pressure Cap:

With Air Conditioning: 14-17 PSI

Without Air Conditioning: 14-17 PSI

Thermostat Opening: 190 Degrees

Fuel Tank: 21-1/2 Gallons

Engine Oil Refill: 6 Quarts*

Manual Transmission:

Three Speed: 3-1/2 Pints

Four Speed: 3-1/2 Pints

Hydra-Matic Transmission:

Pan Only: 3-3/4 Quarts

After Overhaul: 9-1/2 Quarts

Rear Axle: 3 Pints

* With New Oil Filter

8 Cylinder, Le Mans:

Cooling System:

With Heater: 17.8 Quarts

With Air Conditioning: 19.4 Quarts

Radiator Pressure Cap:

With Air Conditioning: 14-17 PSI

Without Air Conditioning: 14-17 PSI

Thermostat Opening: 190 Degrees

Fuel Tank: 21-1/2 Gallons

Engine Oil Refill: 6 Quarts*

Manual Transmission:

Three Speed: 2.8 Pints

Four Speed: 2.5 Pints

Hydra-Matic Transmission:

Pan Only: 3-3/4 Quarts

After Overhaul: 9-1/2 Quarts

Rear Axle: 3 Pints

* With New Oil Filter

8 Cylinder, GTO:

Cooling System:

With Heater: 17.8 Quarts

With Air Conditioning: 19.4 Quarts

Radiator Pressure Cap:

With Air Conditioning: 14-17 PSI

Without Air Conditioning: 14-17 PSI

Thermostat Opening: 190 Degrees

Fuel Tank: 21-1/2 Gallons

Engine Oil Refill: 6 Quarts*

Manual Transmission:

Four Speed: 2.5 Pints

Hydra-Matic Transmission:

Pan Only: 3-3/4 Quarts

After Overhaul: 9-1/2 Quarts

Rear Axle: 3 Pints

* With New Oil Filter

Delco-Remy Distributor Specifications:

See 1968 Pontiac Engines & Engine Accessories:

Delco-Remy Alternator & Regulator Specifications:

See 1968 Pontiac Engines & Engine Accessories:

Delco-Remy Starting Motor Specifications:

See 1968 Pontiac Engines & Engine Accessories:

Rear Axle Specifications:

Carrier Type: Integral

Ring Gear & Pinion Backlash:

Method: Shims

Adjustment: .005"-.009"

Pinion Bearing Preload:

Method: Nut

Adjustment:

New Bearings: 20-30 Inch Lbs

Used Bearings: 14-20 Inch Lbs.

Differential Bearing Preload:

Method: Shims

Adjustment: Slip fit plus .008" Tight

Brake Specifications:

Brake Drum Diameter: 9-1/2"

Wheel Cylinder Bore:

Disc Brakes: 2-1/16"

Front: 1-1/8"

Rear: 7/8"

Master Cylinder Bore:

Disc Brakes: 1-1/8"

Drum Brakes: 1"

Power Brakes: 1"

Wheel Alignment Specifications:

All Models:

Caster: - 1-1/2 Degrees

Camber:

Left: +1/4 Degrees

Right: +1/4 Degrees

Toe In: 0 to 1/8"

Toe-Out on Turns:

Outer Wheel: 18.6 Degrees

Inner Wheel: 20 Degrees

Carburetor Specifications:

See 1968 Pontiac Engines & Engine Accessories:

Popular Options:

Air Conditioning; Heater & Defroster; AM Radio; AM-FM Push Button Radio; Stereo Tape Player; Rear Seat Speaker; Electric Antenna; Power Steering; Power Brakes; Electric Clock; Tinted Windshield; Padded Dash; Remote Control Side Mirror; LeMans Console Shift; Bucket Seats; Reclining Passenger Side Bucket Seat; Head Rests; Tilt Steering Wheel; Custom Sports Steering Wheel; Tachometer; Rally Gauge Cluster; Two Speed Wipers & Washer; Luggage Carrier for Wagons; Power Tailgate Window for Wagons; Custom Wheel Discs; Wire Wheel Discs; Rally Wheels; Back Up Lights; Bumper Guards; Cordova Top; Handling & Ride Package; Safe-T-Track; Various Trim Options; Various Engine & Transmission Options, and much more.

1968 Pontiac Historical Data:

Introduction date for the 1968 Pontiac line was on September 21, 1967

Total 1968 Pontiac Production was 910,977, including 335,301 Tempests & GTOs.

1968 Pontiac Colors & Codes:

Code Color

A Starlight Black

C Cameo Ivory

D Alpine Blue

E Agena Blue

F Nordic Blue

G April Gold

I Autumn Bronze

K Meridian Turquoise

L Aleutian Blue

N Flambeau Burgundy

P Spring Mist Green

Q Verdoro Green

R Solar Red

T Primavera Beige

V Nightshade Green

Y Mayfair Maize

Promotional Model Cars Available:

Plastic: Bonneville 2 Door Hardtop, Bonneville Convertible, Tempest GTO 2 Door Hardtop, Tempest GTO Convertible, Firebird Convertible & Firebird 2 Door Hardtop.