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Description
The Pontiac GTO is an American automobile built by Pontiac Division of General Motors from 1964 to 1974 and by GM subsidiary Holden in Australia from 2004 to 2006. It was a muscle car classic of the 1960s and 1970s. From 1964 until midway through 1973 it was closely related to the Pontiac Tempest/Le Mans and for the 1974 model year it was based on the Pontiac Ventura. The 21st century GTO is essentially a left-hand drive conversion of the Holden Monaro, itself a coupe variant of the Holden Commodore.
General Motors redesigned its A-body line for 1968, with more curvaceous, semi-fastback styling. The wheelbase was shortened to 112.0 in (2,845 mm) on all two-door models. Overall length was reduced 5.9 inches (150 mm) and height dropped half an inch (12 mm), but overall weight was up about 75 pounds (34 kg). Pontiac abandoned the familiar vertically stacked headlights in favor of a horizontal layout, but made hidden headlights available at extra cost. The concealed headlights were a popular option. The signature hood scoop was replaced by dual scoops on either side of a prominent hood bulge extending rearward from the protruding nose.

A unique feature was the body-color Endura front bumper. It was designed to absorb impact without permanent deformation at low speeds. Pontiac touted this feature heavily in advertising, showing hammering at the bumper to no discernible effect. Though a rare option, a GTO could be ordered with "Endura Delete", in which case the Endura bumper would be replaced by a chrome front bumper and grille from the Pontiac Le Mans.

Powertrain options remained substantially the same as in 1967, but the standard GTO engine's power rating rose to 350 hp (260 kW) at 5,000 rpm. At mid-year, a new Ram Air package, known as Ram Air II, became available. It included freer-breathing cylinder heads, round port exhaust and the 041 cam. The 'Official' power rating was not changed. Another carry-over from 1967 was the 4-piston caliper disc brake option. While most 1968 models had drum brakes all around, this seldom ordered option provided greater stopping power. The 1968 model year was also the last year the GTOs offered separate crank operated front door vents.

Another feature was concealed windshield wipers, hidden below the rear edge of the hood. They presented a cleaner appearance and were a North American first, following British Leyland's earlier debut on Austin and Triumph models. Another popular option, actually introduced during the 1967 model year, was a hood-mounted tachometer, located in front of the windshield and lighted for visibility at night. An in-dash tachometer was also available.

Redline bias-ply tires continued as standard equipment on the 1968 GTO, though they could be replaced by whitewall tires at no extra cost. A new option was radial tires for improved ride and handling. However, very few were delivered with the radial tires because of manufacturing problems encountered by supplier B.F. Goodrich. The radial tire option was discontinued after 1968. Pontiac did not offer radial tires as a factory option on the GTO again until the 1974 model.

More at: [link]

Description
The Pontiac GTO is an American automobile built by Pontiac Division of General Motors from 1964 to 1974 and by GM subsidiary Holden in Australia from 2004 to 2006. It was a muscle car classic of the 1960s and 1970s. From 1964 until midway through 1973 it was closely related to the Pontiac Tempest/Le Mans and for the 1974 model year it was based on the Pontiac Ventura. The 21st century GTO is essentially a left-hand drive conversion of the Holden Monaro, itself a coupe variant of the Holden Commodore.
General Motors redesigned its A-body line for 1968, with more curvaceous, semi-fastback styling. The wheelbase was shortened to 112.0 in (2,845 mm) on all two-door models. Overall length was reduced 5.9 inches (150 mm) and height dropped half an inch (12 mm), but overall weight was up about 75 pounds (34 kg). Pontiac abandoned the familiar vertically stacked headlights in favor of a horizontal layout, but made hidden headlights available at extra cost. The concealed headlights were a popular option. The signature hood scoop was replaced by dual scoops on either side of a prominent hood bulge extending rearward from the protruding nose.

A unique feature was the body-color Endura front bumper. It was designed to absorb impact without permanent deformation at low speeds. Pontiac touted this feature heavily in advertising, showing hammering at the bumper to no discernible effect. Though a rare option, a GTO could be ordered with "Endura Delete", in which case the Endura bumper would be replaced by a chrome front bumper and grille from the Pontiac Le Mans.

Powertrain options remained substantially the same as in 1967, but the standard GTO engine's power rating rose to 350 hp (260 kW) at 5,000 rpm. At mid-year, a new Ram Air package, known as Ram Air II, became available. It included freer-breathing cylinder heads, round port exhaust and the 041 cam. The 'Official' power rating was not changed. Another carry-over from 1967 was the 4-piston caliper disc brake option. While most 1968 models had drum brakes all around, this seldom ordered option provided greater stopping power. The 1968 model year was also the last year the GTOs offered separate crank operated front door vents.

Another feature was concealed windshield wipers, hidden below the rear edge of the hood. They presented a cleaner appearance and were a North American first, following British Leyland's earlier debut on Austin and Triumph models. Another popular option, actually introduced during the 1967 model year, was a hood-mounted tachometer, located in front of the windshield and lighted for visibility at night. An in-dash tachometer was also available.

Redline bias-ply tires continued as standard equipment on the 1968 GTO, though they could be replaced by whitewall tires at no extra cost. A new option was radial tires for improved ride and handling. However, very few were delivered with the radial tires because of manufacturing problems encountered by supplier B.F. Goodrich. The radial tire option was discontinued after 1968. Pontiac did not offer radial tires as a factory option on the GTO again until the 1974 model.

More at: [link]