1968 Pontiac Mid-Size Cars Facts, Figures, and Specifications
Five Fast Facts You May Not Know
1968 Pontiac GTO Convertible
1968 Pontiac GTO Hardtop
1. Complete Restyle for 1968 Plus New Chassis
2. 350 CID V-8 RePlaces 326
3. GTO "Endura" Front Bumper Could be Replaced with Chrome
4. "Sports Coupe" No Longer Available in GTO
5. Ram Air 400 CID V-8 Unchanged for 1968
1968 – A Radical Departure in Styling
A completely restyled mid-size Tempest/GTO was introduced in 1968 with a streamlined “Coke bottle” styling, concealed windshield wipers, and a return to horizontal headlights. Two-door models now rode on a 112 inch wheelbase and four-door models on a 116 inch span. Hidden headlights were available at extra cost on the GTO and were a popular option.
1968 Pontiac Mid-Size Car Resources
Equipment or products directly related to this car. Click to view:
Got a 1968 GTO? You Need This Book!
The PONTIAC
GTO/GT-37 GUIDE
By Eric White*
Every single fact and part number!
Covers 1964-1974 & 2004 GTO and 1970-1971 GT-37. 126 pages • Downloadable PDF
$19.95 *$5 goes to the Auto History Preservation Society in Eric’s name!
CLICK HERE to Buy!
Need New Springs or Shocks?
Get the Exact Springs for your Pontiac
Click Here for
1968 Pontiac Mid-Size Cars Facts – Body Paint Color Codes
Click on the Paint Code Name to See the Mix Codes for the appropriate color:
1968 Pontiac Mid Size
Collector Car Insurers
Click on the links below to find your car’s value or get a quote:
1968 Pontiac Mid-Size Car Facts and Specifications
General Year Information – 1968 Pontiac Mid-Size Cars
Big Changed in Styling
General Motors redesigned its A-body line for 1968, with more curvaceous, semi-fastback styling. The wheelbase was shortened to 112.0 inches on all two-door models with overall length reduced 5.9 inches and height reduced half an inch. Surprisingly overall weight was up about 75 lbs. due mostly to added impact safety issues. Pontiac abandoned the familiar vertically stacked headlights in favor of a horizontal layout but made hidden headlights available on GTOs at extra cost and was a popular option.
CID Increased in I-6 and Small V-8
The 230 CID overhead cam I-6 was enlarged to 250 CID with horsepower ratings unchanged. The 326 CID V-8 was replaced by a new 350 CID V-8 with horsepower ratings of 250 with 2-barrel or 320 with 4-barrel carb.
Historical
A milestone was achieved in 1968 when an all-time high of 940,000 cars were produced. It was also the first time that sales of Pontiac mid-size, pony car and specialty models exceeded the sales of the traditional lines.
1968 Pontiac Mid-Size Cars Factoids
Click a Tab to See the Details
Pontiac redesigned its mid-size line for 1968, with more curvaceous styling. Wheelbase was was now 112.0 inches on 2-door models The vertically stacked headlights were lost but hidden headlights were available on GTO Models. See the Pontiac Performance Brochure HERE.
An increase in CID for the small V-8 occurred this year. The new 350 CID sped were: Bore and stroke: 3.8750″ x 3.75″ Compression ratio: 9.2:1/10.75:1. Horsepower: 265 @ 4600 RPM/320 @ 5100 RPM. Rochester 2 and 4-barrel. See the 1968 Pontiac Brochure – HERE.
1968 Pontiac Mid-Size Cars Facts – Models Offered
Click a Tab to See the Details
Tempest – Series 233 – As stated above, the new body style was quite impactful and was carried across all models. The bumper and grille were on piece and outlined the entire front fascia. The rear bumper was also quite large and set into the body and the tail lights were placed in the bumper. The sides were smooth with no ornamentation other than “Tempest” at the front of the front fender. At the rear, a stylized Pontiac emblem appeared just before the bumper’s wraparound.
Regular equipment on standard Tempests included GM safety features, heater and defroster, door arm rests. Overhead cam (OHC) models with the base engine had “OHC-6” lettering on rocker panels.
Tempest models were 2-door Sport Coupe and 4-door Sedan.
Tempest Custom – Series 235 – Tempest Customs had all features found on base Tempest models plus special interior and exterior trim, carpeting, Deluxe steering wheel. arm rests with ash trays, cigarette lighter. ignition buzzer alarm, front and rear body side marker lights and dual horns. Station wagons and convertibles had all-Morrokide seats and carpeting. and panel courtesy lamps on convertibles. Tempest lettering along with custom badges appeared at tips of front fenders.
Tempest Custom Models were 2-door Sport Coupe, 2-door Hardtop Coupe, 4-door Sedan, 4-door Hardtop Sedan, Convertible, and 6-passenger Station Wagon.
LeMans – Series 237 and 239 – Standard in LeMans were all GM safety features plus disappearing wipers, dual horns and Morrokide interior. Two-door models came with a choice of bucket or notch back seats. The four-door hardtop had cloth and Morrokide upholstery and a choice of notch back or bench seats. The word “LeMans” was on the rear fender near the side marker light. Deluxe steering wheel, carpeting, cigar lighter, arm rests and ash trays, ignition alarm, panel courtesy lamps, ash tray and glove box lamps were also featured on this model. The LeMans convertible had a power top and special courtesy lights.
The Series 239 Safari wagon was, for the most part, appointed in LeMans level trim with wood-grained interior and exterior paneling. The word “Safari” was placed on the rear of the of wood-trimmed tailgate, with “Tempest” at the front of the front fender.
LeMans Models were 2-door Sport Coupe, 2-door Hardtop Coupe, 4-door Hardtop Sedan, Convertible, and 6-passenger Safari Station Wagon.
GTO – Series 242 – Standard in GTOs were all GM safety features, dual exhausts, three-speed manual transmission with Hurst shifter, sports type springs and shock absorbers, and red line tires. On the interior. there were bucket or notch back seats, cigar lighter, carpeting, ignition alarm, disappearing wipers, panel courtesy, ash tray and glove box lamps and Deluxe steering wheel. A 350 horsepower 400 CID four-barrel V-8 was standard, with a two barrel 400 CID 2-barrel carbureted regular fuel V-8 as a no cost option.
On the exterior, GTOs had a color-keyed steel reinforced “Endura” rubber front bumper that was similar to the chrome bumper found on all other Tempests.. Twin scoop hoods mimicking those on the Firebird we on the hood. “GTO” lettering was placed on the left-hand grille and the right-hand deck lid, and there were the typical, though slightly restyled V-shaped GTO badges behind front wheel opening, The Pontiac V-shaped nose emblem and distinct tail-lamp treatments were fitted.
GTO models were 2-door Hardtop Coupe and Convertible.
1968 Pontiac Mid-Size Cars Facts – Engines
Click a Tab to See the Details
- 175 HP 250 CID I-6
- 215 HP 250 CID I-6
- 265 HP 350 CID V-8
- 320 HP 350 CID HO V-8 AMT
- 320 HP 350 CID HO V-8 SMT
- 265 HP 400 CID V8 AMT
- 350 HP 400 CID V-8
- 360 HP 400 CID HO V-8 AMT
- 360 HP 400 CID HO V-8 SMT
- 360 HP 400 CID RA V-8 AMT
- 360 HP 400 CID RA V-8 SMT
- 366 HP 400 CID RA II V-8 AMT
- 366 HP 400 CID RA II V-8 SMT
- NOTES
250 CID 1-Barrel OHC I-6 – All Transmissions. Overhead valves, Overhead camshaft. Cast iron block. Seven main bearings.
Displacement: 250 cubic inches.
Bore and stroke: 3.875 x 3.525 inches.
Compression ratio: 9.0:1.
Horsepower: 175 @ 4800 RPM.
Torque: 240 @ 2600 RPM.
Valve lifters: Hydraulic.
Camshaft timing: Intake 240°, Exhaust 240°, Overlap 28°, Lift 0.400″.
Carburetor: Rochester one-barrel model (manual transmission) 7028065 (manual transmission w/AC) 7028067 (Automatic) 7028168.
NOTE: Not Available GTO.
250 CID 4-Barrel Sprint OHC I-6 – All Transmissions: Overhead valves, Overhead camshaft. Cast iron block. Seven main bearings.
Displacement: 250 cubic inches.
Bore and stroke: 3.875 x 3.525 inches.
Compression ratio: 10.5:1.
Horsepower: 215 @ 5200 RPM.
Torque: 255 @ 3800 RPM.
Valve lifters: Hydraulic.
Camshaft timing: Intake 244°, Exhaust 244°, Overlap 26°, Lift 0.438″.
Carburetor: Rochester four-barrel model (manual transmission) 7028261 (Automatic) 7028260.
NOTE: Not available Stations Wagons and GTO.
350 CID 2-Barrel V-8 – All Transmissions. Overhead valves. Cast Iron Block. Five main bearings.
Displacement: 350 CID.
Bore and stroke: 3.8750″ x 3.75″
Compression ratio: 9.2:1.
Horsepower: 265 @ 4600 RPM.
Torque: 355 @ 2800 RPM.
Valve lifters: Hydraulic.
Camshaft timing: Intake 269°, Exhaust 277°, Overlap 47°, Lift (intake) 0.376″; (exhaust) 0.412″.
Carburetor: Rochester 2-barrel (manual transmission) 7028071 (automatic) 7028062.
NOTE: Not Available GTO. Available all others.
350 CID 4-Barrel HO V-8 – Automatic Transmission Only. Overhead valves. Cast Iron Block. Five main bearings.
Displacement: 350 CID.
Bore and stroke: 3.875″ x 3.75″
Compression ratio: 10.75:1.
Horsepower: 320 @ 5100 RPM.
Torque: 359 @ 2900 RPM.
Valve lifters: Hydraulic.
Camshaft timing: Intake 273°, Exhaust 282°, Overlap 55°, Lift (intake) 0.410″; (exhaust) 0.414″.
Carburetor: Rochester 4-Barrel 7028266.
NOTE: Not available Stations Wagons and GTO.
350 CID 4-Barrel HO V-8 – Manual Transmission Only. Overhead valves. Cast Iron Block. Five main bearings.
Displacement: 350 CID.
Bore and stroke: 3.875″ x 3.75″
Compression ratio: 10.75:1.
Horsepower: 320 @ 5100 RPM.
Torque: 359 @ 2900 RPM.
Valve lifters: Hydraulic.
Camshaft timing: Intake 273°, Exhaust 289°, Overlap 54°, Lift (intake) 0.410″; (exhaust) 0.413″.
Carburetor: Rochester 4-Barrel 7028266.
NOTE: Not available Stations Wagons and GTO.
400 CID 2-Barrel Economy V-8 – Automatic Transmission Only. Overhead valves. Cast iron block. Five main bearings.
Displacement: 400 CID.
Bore and stroke: 4.120″ x 3.750″.
Compression ratio: 8.6:1.
Horsepower: 265 @ 4600 RPM.
Torque: 397 @ 2400 RPM.
Valve lifters: Hydraulic.
Camshaft timing: Intake 269°, Exhaust 277°, Overlap 47°, Lift (intake) 0.376″; (exhaust) 0.412″.
Carburetor: Rochester two-barrel Model 7028060.
NOTE: Available GTO with automatic transmission only.
400 CID 4-Barrel V-8 – All Transmissions. Overhead valves. Cast iron block. Five main bearings.
Displacement: 400 CID.
Bore and stroke: 4.120″ x 3.750″.
Compression ratio: 10.75:1.
Horsepower: 350 @ 5000 RPM.
Torque: 445 @ 3000 RPM.
Valve lifters: Hydraulic.
Camshaft timing: Intake 273°, Exhaust 289°, Overlap 54°, Lift (intake) 0.410″; (exhaust) 0.413″.
Carburetor: Rochester four-barrel (manual transmission) 7028263; (automatic transmission) 7028268.
NOTE: Available GTO only.
400 CID 4-Barrel HO V-8 – Automatic Transmission Only. Overhead valves. Cast iron block. Five main bearings.
Displacement: 400 CID.
Bore and stroke: 4.120″ x 3.750″.
Compression ratio: 10.75:1.
Horsepower: 360 @ 5100 RPM.
Torque: 445 @ 3600 RPM.
Valve lifters: Hydraulic.
Camshaft timing: Intake 273°, Exhaust 289°, Overlap 54°, Lift (intake) 0.410″; (exhaust) 0.413″.
Carburetor: Rochester four-barrel 7028268.
NOTE: Available GTO only.
400 CID 4-Barrel HO V-8 – Manual Transmission Only. Overhead valves. Cast iron block. Five main bearings.
Displacement: 400 CID.
Bore and stroke: 4.120″ x 3.750″.
Compression ratio: 10.75:1.
Horsepower: 360 @ 5100 RPM.
Torque: 438 @ 3600 RPM.
Valve lifters: Hydraulic.
Camshaft timing: Intake 288°, Exhaust 302°, Overlap 63°, Lift (intake) 0.414″; (exhaust) 0.413″.
Carburetor: Rochester four-barrel 7028275.
NOTE: Available GTO only.
400 CID 4-Barrel Ram Air V-8 – Automatic Transmission Only. Overhead valves. Cast iron block. Five main bearings.
Displacement: 400 CID.
Bore and stroke: 4.120″ x 3.750″.
Compression ratio: 10.75:1.
Horsepower: 360 @ 5400 RPM.
Torque: 445 @ 3600 RPM.
Valve lifters: Hydraulic.
Camshaft timing: Intake 288°, Exhaust 302°, Overlap 63°, Lift (intake) 0.414″; (exhaust) 0.413″.
Carburetor: Rochester four-barrel 7028274.
NOTE: Available GTO only.
400 CID 4-Barrel Ram Air V-8 – Manual Transmission Only. Overhead valves. Cast iron block. Five main bearings.
Displacement: 400 CID.
Bore and stroke: 4.120″ x 3.750″.
Compression ratio: 10.75:1.
Horsepower: 360 @ 5400 RPM.
Torque: 445 @ 3800 RPM.
Valve lifters: Hydraulic.
Camshaft timing: Intake 301°, Exhaust 313°, Overlap 76°, Lift (intake) 0.413″; (exhaust) 0.413″.
Carburetor: Rochester four-barrel 7028275.
NOTE: Available GTO only.
400 CID 4-Barrel Ram Air II V-8 – Automatic Transmission Only. Overhead valves. Cast iron block. Five main bearings.
Displacement: 400 CID.
Bore and stroke: 4.120″ x 3.750″.
Compression ratio: 10.75:1.
Horsepower: 366 @ 5400 RPM.
Torque: 445 @ 3800 RPM.
Valve lifters: Hydraulic.
Camshaft timing: Intake 288°, Exhaust 302°, Overlap 63°, Lift (intake) 0.414″; (exhaust) 0.413″.
Carburetor: Rochester four-barrel 7028274.
NOTE: Available GTO only.
400 CID 4-Barrel Ram Air II V-8 – Manual Transmission Only.: Overhead valves. Cast iron block. Five main bearings.
Displacement: 400 CID.
Bore and stroke: 4.120″ x 3.750″.
Compression ratio: 10.75:1.
Horsepower: 366 @ 5400 RPM.
Torque: 445 @ 3800 RPM.
Valve lifters: Hydraulic.
Camshaft timing: Intake 301°, Exhaust 313°, Overlap 76°, Lift (intake) 0.413″; (exhaust) 0.413″.
Carburetor: Rochester four-barrel 7028275.
NOTE: Available GTO only.
More detailed information on the 1969 I-6 and 350 and 400 CID V-8 engines may be found in the Library’s 1968 Pontiac Mid-Size AMA Specifications Sheets. You may access the sheets HERE, or use the navigation on this page.
1968 Pontiac Mid-Size Cars Facts – Chassis Features
-
- Wheelbase: (Tempest/GTO 2-door) 112.0 inches; (Tempest 4-door & wagons) 116.0 inches..
- Overall length: (Tempest Safaris) 211.0 inches; (Tempest 4-door passenger cars) 204.7 inches; (Tempest 2-door & GTO) 200.7 inches.
- Overall width: 74.8 inches.
- Overall height: (Tempest/Tempest Custom) 52.5 inches; (LeMans) 52.3 inches; (Station Wagons) 54.4 inches; (GTO) 52.2 inches.
- Front track: 60 inches.
- Rear track: 60 inches.
- Standard tires Tempest: 7.75 x 14 mounted on 14 x 5J rim wheels I-6; V-8 14 x 6J.
- Optional tires Tempest: 8.25 x 14 mounted on 14 x 5J rim wheels V-8.
- Standard tires GTO: G70 x 14 Nylon cord tires mounted on 14 x 6JK rim wheels.
- Optional tires GTO: F70 x 14 rayon cord white wall.
1968 Pontiac Mid-Size Cars Facts – Powertrain Information
- Three Speed Manual Transmission Ratios
- I-6 1st – 2.85:1, 2nd – 1.68:1, 3rd – 1:1, Reverse – 2.95:1.
- V-8: 1st – 2.54:1, 2nd – 1.50:1, 3rd – 1:1, Reverse – 2.63:1.
- Four Speed Manual Transmission Ratios
-
- I-6 Wide Ratio: 1st – 2.85:1, 2nd – 2.02:1, 3rd – 1.46:1, 4th 1:1, Reverse – 2.85:1.
- V-8 Wide Ratio: 1st – 2.52:1, 2nd – 1.88:1, 3rd – 1.46:1, 4th 1:1, Reverse – 2.59:1.
- V-8 Close Ratio: 1st – 2.22:1, 2nd – 1.64:1, 3rd – 1.28:1, 4th 1:1, Reverse – 2.27:1.
- Automatic Transmission Ratios
-
- Tempest: Low – 1.76:1, High – 1:1, Reverse – 1.76:1.
- GTO: 1st – 2.48:1, 2nd – 1.48:1, 3rd – 1:1, Reverse – 2.08:1.
- Rear Gear Standard Ratios
NOTE: For more powertrain information, access the 1968 Pontiac Mid-Size AMA Specifications Sheets HERE.
1968 Pontiac Mid-Size Cars Facts – Powertrain Options
-
- Three-speed manual transmission standard.
- 175 HP OHC I-6 engine standard in Tempest, Tempest Custom and LeMans.
- Two-speed automatic transmission optional on all Tempest, Tempest Custom and LeMans.
- Three-speed automatic transmission optional on GTO.
- Four-speed manual transmission optional except 250 CID 175 HP.
- Close-ratio 4-speed manual box optional on the GTO.
- 215 HP OHC I-6 engine optional.
- 250 HP 350 CID V-8 optional In Tempest, Tempest Custom and Tempest LeMans lines for cars without the GTO option.
- 320 HP 350 CID V-8 optional In Tempest, Tempest Custom and Tempest LeMans lines for cars without the GTO option.
- 265 HP 400 CID “economy engine” optional GTO at no cost.
- 350 HP 400 CID V-8 standard & exclusive to the GTO.
- 360 HP 400 CID HO V-8 optional on the GTO.
- 366 HP 400 CID Ram Air V-8 optional on the GTO.
1968 Pontiac Mid-Size Cars Facts – Options and Accessories
-
- Adjustable front and rear shocks ($42).
- Carpets ($19).
- Console ($51-68).
- Cordova top ($84-95).
- Cruise control ($53).
- Custom air-conditioner ($360).
- Dual horns ($4).
- Front disc brakes ($63).
- Gage cluster ($32).
- Gage cluster, Rally with tachometer ($84).
- Gage cluster, Rally($51).
- Hood mounted tachometer ($63).
- Passenger-side reclining bucket seat head restraint ($84).
- Power brakes ($42).
- Power seat, four-way ($70).
- Power steering ($69). Driver-side four-way power bucket seat ($70).
- Radio, AM/FM ($134).
- Rally I wheels ($40-61).
- Rally II wheels ($63-84).
- Rally stripes on GTO ($11).
- Rally stripes on Tempest ($13).
- Safeguard speedometer ($16).
Station wagon luggage carrier ($63). - Super lift shocks for Tempest/GTO ($42).
- Tinted windows ($35).
- Tinted windshield ($26).
- Wire wheel discs ($53-74).
1968 Pontiac Mid-Size Car Downloads and Images
1968 Pontiac Mid-Size Cars Facts – Related Document Downloads
Files directly related to the Pontiac Mid-Size Line will appear below. Click to Download:
1968 Pontiac Performance Brochure
1968 Pontiac Tempest Print Ads
1968 Pontiac Mid-Size AMA Specifications Sheets
1968 Pontiac Tempest HO Road Test – Motor Trend Magazine
1968 Pontiac GTO Ram Air Road Test – Cars Magazine
1968 Pontiac GTO Ram Air Road Test – Car Life Magazine
1968 Pontiac GTO Ram Air Road Test – Hot Rod Magazine
1968 Pontiac Bobcat 428 GTO Road Test – Car and Driver Magazine
1968 Pontiac Mid-Size Cars Facts – Related Images
Related Images to the 1968 Pontiac Mid-Size Line will appear below
1968 Pontiac GTO Convertible
When you wanted to be king of the mid-size Pontiac line, you bought a 1968 Pontiac GTO Convertible. The proof was that it was the best-selling Pontiac convertible other than the Firebird with 9,980 delivered!
1968 Pontiac GTO Hardtop Coupe
The 1968 Pontiac GTO Hardtop Coupe was still a sizzling seller, and we’re sure the new styling helped 77,704 GTO fanatics pony up and buy it!
1968 Pontiac LeMans Convertible
The 1968 Pontiac LeMans Convertible satisfied the buyers’ need for smart styling and excellent interior trim. 8,820 were delivered.
1968 Pontiac LeMans 4-door Hardtop
Of all Pontiac 4-doors, the 1968 Pontiac LeMans 4-door Hardtop was the most trimmed out and sleekest offering. As a result, 9,002 were sold.
1968 Pontiac LeMans Hardtop Coupe
The 1968 Pontiac LeMans Hardtop Coupe fit right in the Pontiac buyer’s wheelhouse. An astounding 110,306 were sold – outselling every other Pontiac model – regardless of size or price!
1968 Pontiac LeMans Sport Coupe
The 1968 Pontiac LeMans Sport Coupe was the least expensive car in the LeMans line. Overshadowed by the hardtop version, only 8,439 were produced.
1968 Pontiac Tempest Custom Convertible
The 1968 Pontiac Tempest Custom Convertible was the least expensive mid-size convertible Pontiac. It also sold the least of the convertibles offered at 3,518. People wanted pizazz in their convertible.
1968 Pontiac Tempest Custom 4-door Hardtop
The 1968 Pontiac Tempest Custom 4-door Hardtop must have been a bit too plain for customers, as only 6,147 were produced.
1968 Pontiac Tempest Custom Hardtop Coupe
The 1968 Pontiac Tempest Custom Hardtop Coupe was stylish and sporty though the least expensive of this style. It resonated with buyers as 40,574 were sold.
1968 Pontiac Tempest Custom Sport Coupe
The 1968 Pontiac Tempest Custom Sport Coupe was trimmed out a bit more than the base version. Apparently that trim did not help sales as only 10,634 were delivered.
1968 Pontiac Tempest Custom 4-door Sedan
The 1968 Pontiac Tempest Custom 4-door Sedan was the mid-size more upscale sedan. It sold well at 17,304 delivered.
1968 Pontiac Tempest Sport Coupe
The 1968 Pontiac Tempest Sport Coupe was the least expensive mid-size Pontiac. Even so, 19,991 found buyers.
1968 Pontiac Tempest 4-door Sedan
The 1968 Pontiac Tempest 4-door Sedan was base transportation when compared to other 1968 Pontiac mid-size cars. Only 11,590 were delivered.
1968 Pontiac Tempest Custom Station Wagon
The 1968 Pontiac Tempest Custom Station Wagon was the least expensive and more utilitarian mid-size wagon. 8,253 were sold as a result.
1968 Pontiac Tempest Safari Wagon
The 1968 Pontiac Tempest Safari Wagon was the top-end mid-size wagon. Its steep price may have caused only 4,414 to be delivered.