Spotter's Guide
1966 GTO

On the outside the 1967 GTO was essentially a carry-over. The plastic grille insert was replaced by a chrome wire mesh design. The rear taillight panel treatment was new, using four horizontal slots on each side. The rocker panel molding was much larger and incorporated the familiar GTO 6.5 liter crest. GTO emblems were located on the grille, on the deck lid and on each rear fender.

In the interior, vinyl was used to simulate wood on the dash. The appearance of the dash panel was the same; however, the 1967 unit was not interchangeable with the 1966 unit. One easy way to differentiate the two is that the 1967 dash panel used a split oval turn signal indicator. The standard instrument package was unchanged, but the optional Rally cluster had some minor revisions. The water temperature gauge went to 250'F, and the oil pressure gauge read to 80 lbs. Some early Rally clusters were carry-over 1966 units. Also, a few Rally clusters got the water and oil gauges in the right center pod and a Rally clock in the far right pod. This cluster arrangement was available when the hood-mounted tachometer was ordered, but it could be had by itself as well. The redline band began at 5100 rpm on the hood tachometer, which had white numerals on a steel-blue background. Radio availability was complemented with a stereo eight-track player. It was mounted under the dash beneath the radio. Other interior changes included a different seat pattern comprising three sets of three ribs. This was complemented by matching horizontal ribs on the door panels. A notchback bench seat was optional. The steering wheel design was changed as well. The standard wheel was a three-spoke that incorporated the horn buttons on the spokes. The center ornament had the Pontiac crest and was marked Energy Absorbing to let the driver know that the car came with an energy-absorbing steering column. The optional Custom Sports steering wheel, also a three-spoke design, was smaller in diameter than the 1966 unit and had a larger hub.

In addition to the Hurst floor shifters used on manual-transmission-equipped cars, the Hurst Dual Gate shifter (which allowed the driver to shift through the gears) was used on GTOs equipped with the new three-speed Turbo Hydra-matic automatic. The Turbo Hydra-matic replaced the two-speed Powerglide automatic. Under the hood is where the major changes came from in 1967. Now Four engines were available. The standard GTO engine displaced 400 cid and was rated at 335 hp. A no-cost option was the 400 cid 255 hp V-8, which came with a 2-bbl carburetor and an 8.6:1 compression ratio. Optional were two more 400 cid V-8s, both rated at 360 hp. The 400 High Output (HO) used a single four-barrel Rochester carburetor, an open-element air cleaner, free-flowing exhaust manifolds and a camshaft that had more lift.

The 400 Ram Air came with the HO's open-element air cleaner but also included all the parts necessary to make the stock nonfunctional hood scoop functional. The air pan and open scoop were shipped in the trunk for the dealer to install. A small number of Tri-Power engines were built and installed on early 1967 GTOs before a corporate ban on multiple carburetion took effect.

Dual exhausts were standard on all GTOs. Manual transmission-equipped cars had 2.25 in. tailpipes, whereas cars equipped with the Turbo Hydra-matic automatic had 2 in. pipes and 22 in. long resonators. The braking system was upgraded because of a federally mandated dual master cylinder. The standard drum brakes still measured 9.5 in., but for the first time, power front disc brakes, measuring 11.5 in., were optional. An additional styled steel wheel became available: the Rally II five-spoke wheel. This was painted gray, with the raised portion on each spoke painted argent. The center cap was red. The Rally II wheel used on cars with the optional disc brakes had a different offset to clear the disc brake caliper. In addition, the Rally I wheel was still available, unchanged from 1966. Three wheel covers were also available: the Deluxe cover with its six cutouts; the Custom cover, also with six cutouts but including a three-prong spinner; and a wire wheel cover. Standard tires were F70 x 14 Red Lines, with whitewalls a no-cost option.





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