1967 Pontiac Grand Prix

1967 Pontiac Grand Prix Convertible

The 1967 Pontiac Grand Prix was serious for the Grand Prix-for a selection of reasons. The Grand Prix got a completely new look from the belt-line down, and, for the one time, a production convertible was offered. What’s more, the engine lineup saw several changes as well.
While the 1967 Pontiac Grand Prix again shared the same basic body as the Catalina, it looked noticeably front, the Catalina’s stacked headlight treatment was passed up for the Grand Prix. The GP and the Moggy exploited the same front bumper, but when used on the GP, it housed both disappearing headlights and headlight doors with integral grille. In the place where the top headlight would be was a louvered front fender extension panel.
The 1967 Pontiac Grand Prix’s taillight panel was unique, and housed slotted taillights that were like the ones on the ’67 GTO and Firebird. The new restyling was bigger and more massive-looking than ever before, notwithstanding remaining on an unvaried wheelbase. The front end was all new and though the same bumper was employed on the Catalina, the Grand Prix’s housed both disappearing headlights and headlight doors with an integrated grille, instead of having the stacked headlights like the Catalina. In the place where the top headlight would’ve been was a louvered front fender extension panel. The parking lamps were secreted in the fender tips, behind 3 little, horizontal slots.

Also new in 1967 Pontiac Grand Prix were hidden windshield wipers. The hardtop coupe had new one-piece side glass, with GP initials frosted on it. Twin pinstripes decorated the fender tops. A wasp-waist rear emphasized width. The taillamps were inserted within twin slots on the slanted rear end panel. Identification items included GP initials on the left-hand grille and right hand edge of the rear deck lid, and the Grand Prix name spelled out on the rear fenders. The big news was the arrival of a Grand Prix convertible model, the only year it would be offered.
The 1967 Pontiac engine lineup highlighted some serious changes. Both the 389 and 421 engines received a bore increase to 4.12 inches-for new displacements of four hundred and 428 cubic inches . In addition, the venerable Pontiac block received new cylinder heads with completely redesigned ports. Valve diameters were increased to 2.11 inches for intakes and 1.77 inches for exhausts. To make room for the increased valve sizes, the gap between the valvestem centers was increased from 1.82 to 1.98 inches. The new heads were announced to extend airflow from 30 to 35 p.c and were superior to any previous design-even that of the Super Dutys.
Since 1967 Pontiac Grand Prix marked the first year without the legendary Tri-Power induction system, Grand Prix engine availability was simplified. In place of the triple 2-barrel system was a spread-bore Rochester Quadrajet 4-barrel carb. It was equal in performance to the Tri-Power and was simpler to tune and maintain.

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