With the 1965 GTO also becoming about 100 pounds (45 kg) heavier, Pontiac had to increase performance, so the 389-ci (6.4-liter) at the heart of the iconic muscle car was revised.

1965 Pontiac GTO Tri-Power - Exploring All The Options. A ’65 GTO Tri-Power convertible goes from low-option to loaded on its way to Concours-restored gold. MotorTrend Staff Writer Jan 21, 2014.

Tri-Power Tiger: Pontiac’s 1965 GTO. Originally published in the March 1987 issue of Hot Rod magazine. HOT ROD Staff Writer Jan 01, 2023. See All 6 Photos. By Al Kirschenbaum. 0:00 / 0:00.

Enter to win a 1965 Pontiac GTO convertible, fully restored with a Tri-Power V8. H ere's your chance to own a piece of muscle car history! A stunning, rotisserie-restored 1965 Pontiac GTO ...

Mysterious 1964 Pontiac GTO Flexes 389 Tri-Power, Dressed To Impress. Published: 21 Jun 2024, 22:00 UTC • By: Bogdan Popa. 13 photos. Photo: eBay seller seller wovavwo_dkfvfl7.

Pontiac introduced its 389 V8 for 1959, offering it through 1966, when it became the standard engine for the GTO. Fed by three two-barrel Rochester carburetors, the Tri-Power variant entered the ...

The Pontiac GTO is thought by many to be the first of the muscle cars. This 1965 GTO convertible is resplendent in triple black, ... while the Tri Power set-up grew to 360 horsepower.

Although the 389 and the tri-power setup shown above made the GTO a legend, the engine and tri-power option had been in Pontiac's lineup since 1959, when Pontiac increased the stroke of the 370 V8 ...

This 1964 Pontiac GTO Hardtop in rare Sunfire Red is powered by the matching-numbers 389 Tri Power V8. This low-mile example will soon cross the auction block.

Regardless, Pontiac rated the 1967 400 H.O. (as found under the hood of our feature car) at the same 360 horses as the outgoing 389 Tri-Power. In reality, the Quadrajet mill is at least 15 ...

Enter to win a 1965 Pontiac GTO convertible, fully restored with a Tri-Power V8. Here's your chance to own a piece of muscle car history! A stunning, rotisserie-restored 1965 Pontiac GTO convertible ...