Everyone remembers the ’65 Tri-Power and the Judge. But Pontiac had more than a few GTOs that got left out of the highlight reel—some for being too different, others for arriving at the wrong time. These overlooked variants still wore the badge, but they don’t get the same spotlight. That doesn’t mean they’re not worth knowing.
1973 GTO Colonnade Coupe
By 1973, the GTO name was bolted onto a Colonnade A-body with a heavy steel front end and federal bumpers. It shared most of its body with the LeMans, which made it easy to miss.
Power came from a 400 or optional 455, with up to 250 net hp. A manual was still available, but the styling was polarizing. Sales dropped under 5,000 units—proof it didn’t connect. Today, it’s the GTO you’ve probably seen but didn’t recognize.
1974 GTO Ventura
Pontiac dropped the GTO onto the compact Ventura platform for its final year before retirement. It looked like a rebadged Nova with some stripes, but it had its own following.
Under the hood was a 350 rated at 200 hp, backed by a 4-speed manual if you wanted it. The interior was spartan, and performance was modest. It was light, yes—but it didn’t feel like a GTO. Pontiac pulled the plug after this one.
2004 GTO (VZ Monaro)
The 2004 GTO was an Australian import, a rebadged Holden Monaro. It didn’t look much like its namesake, but under the hood it had muscle—specifically, the LS1 V8.
The 5.7-liter made 350 hp and 365 lb-ft of torque. It was backed by either a T56 6-speed or 4-speed auto. It was fast and refined but lacked visual flair. Critics knocked it for looking too plain, but performance was solid. Just not loud enough for GTO fans.
2005–2006 GTO LS2
The follow-up to the 2004 Monaro-based GTO got more power and subtle upgrades, including dual hood scoops and a revised rear fascia.
This time, it used the 6.0L LS2 V8 making 400 hp and 400 lb-ft. It could run the quarter-mile in the low 13s and hit 60 in under 5 seconds. Still, buyers weren’t convinced. GM pulled the plug after 2006, and these cars sat on lots—despite being legitimately quick.
1964 GTO Post Coupe
Everyone remembers the ’64 as the beginning of it all, but the post coupe version is usually left out of the conversation. It was the cheapest and stiffest of the three body styles.
You could spec it with the 389 Tri-Power, 4-speed, and limited-slip rear. The post added body rigidity for drag racing, even if it lacked the pillarless profile. Many were stripped-down street brawlers, but collectors usually chase the hardtops and convertibles instead.
1972 GTO Hardtop
1972 was a transition year. Pontiac quietly removed the Endura bumper option, and the GTO became harder to spot without it. Insurance costs were also killing sales.
The 400 made 250 net hp, while the 455 was optional. Interiors remained plush, and the Rally gauges were still around, but the styling didn’t stand out like before. It marked the end of an era—by ’73, the GTO was a different animal altogether.
1969 GTO 2+2 Convertible (Canada)
In Canada, Pontiac offered a GTO-style version of their Laurentian/Parisienne full-size car under the “2+2” name. It had big V8s, buckets, and floor shifters, but looked more Bonneville than Judge.
These Canadian-market Pontiacs shared chassis bits with Chevrolets but carried unique trim. Buyers could get a 396 or 427, depending on the year. It’s not officially a GTO, but it scratches the same itch for full-size power wrapped in Pontiac style.
1970 GTO with Base 350 V8
Most associate the 1970 GTO with the Ram Air III and IV, but it is rumored that Pontiac quietly offered a base 350 2-barrel in some early ordering guides that year.
Output was just 255 gross hp—not exactly muscle material. Most buyers upgraded, but a few base cars slipped through. They were cheaper and looked the part, but didn’t have the performance to back it up. Pontiac quietly removed the option later in the year.
1971 GTO Judge Convertible
Only 17 Judge convertibles were built in 1971—the final year for the package. Most people don’t realize the Judge name was still around that late.
The Ram Air engines were still offered, including the 455 HO making 335 gross hp. Styling was toned down a bit, and sales plummeted. After that, the Judge was gone. These few drop-tops are almost never seen, even at shows.
1966 GTO with Factory A/C and Tri-Power
Tri-Power and factory air conditioning weren’t supposed to mix in ’66—but some rare examples left the factory with both, likely due to dealer workaround or leftover parts.
Tri-Power made 360 hp, and adding A/C was expensive and complicated. Most chose one or the other. Having both made for a very rare GTO that was fast and cool—literally. Today, these oddballs fly under the radar but fetch strong money when they surface.
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