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1966 Pontiac GTO Tri-Power
The 1966 Pontiac GTO Tri-Power is the year the GTO stopped being merely a LeMans option and became its own Pontiac series. The new 242-series body kept the 115-inch wheelbase, added the reshaped A-body shell, used the distinctive split grille and louvered tail lamps, and still offered the 389 with three two-barrel carburetors for buyers who wanted the top regular-production GTO engine path.
The record matters because 1966 is both the GTO's highest-production year and the final factory year for the Tri-Power option. References checked for this page report 96,946 total GTOs, including 73,785 hardtops, 12,798 convertibles, and 10,363 sports coupes. HowStuffWorks reports 19,045 Tri-Power GTOs before GM's midyear multi-carburetor restriction ended the option outside Corvette.
Model-level evidence supports the 389 Tri-Power rating at 360 hp at 5,200 rpm and 424 lb-ft at 3,600 rpm, with three-speed manual, four-speed manual, and two-speed automatic paths. Factory records also point to the rare XS Ram Air path, but an XS claim needs PHS paperwork, engine code evidence, hood pan/cutout evidence, and date-correct supporting parts.
This page separates factory availability from individual-car originality. The photos and videos show exact-year model, trim, body-style, and restoration context; they do not authenticate any single car's original engine, transmission, axle, paint, or interior without matching documents and physical evidence.