400 Upgrade: 1965 Pontiac Tempest

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One of the drawbacks of the early Pontiac GTO is that with ever-increasing popularity, values have climbed to the point where they are becoming beyond the reach of mere mortals. However, some alternatives offer equivalent performance at a more affordable price. This 1965 Pontiac Tempest could be one such car. Its presentation is extremely tidy, while the upgraded interior adds a classy touch. However, the 400ci V8 under the hood should provide performance that matches many muscle cars from the era. I must say a big thank you to Barn Finder Curvette for spotting the Tempest listed here on eBay in Flemington, New Jersey. Bidding has reached $10,000, which is below the reserve.

There’s a fair bit to unpack with this Second Generation Tempest, because it appears to have led an interesting life. Ordered by its first owner in subtle Cameo Ivory, it now wears a shade that looks very close to Nightwatch Blue. The seller confirms that while the exterior exhibits small chips and minor swirls, a recent paint match has left the car sparkling as a driver-grade classic. They include additional touch-up paint in the sale, so addressing any existing or future imperfections should be pretty easy. The panels are free from bumps and bruises, and the seller recently replaced the frame-to-body mounts. Rust doesn’t appear to be an issue, and the aftermarket wheels add a muscular look to the exterior. I can’t spot any significant trim issues, and the glass is clear.

Although some readers may view the color change as the most profound modification to this Tempest, lifting the hood reveals something pretty special. The seller confirms that this classic left the line powered by a 326ci V8, teamed with a two-speed Powerglide transmission. That combination would have provided competent performance, but there is no way this vehicle would have been mistaken for a muscle car. However, that situation has changed dramatically, with the engine bay now housing a 400ci V8 from 1973. The seller didn’t simply bolt in the bigger motor and hope for the best, because they treated it to a comprehensive refresh. The process included a 0.030″ overbore, with the engine now filled with TRW forged pistons and Clevite bearings. An upgraded Summit camshaft and Edelbrock D-Port cylinder heads ensure the V8 breathes deeply, while the high-pressure oil pump tackles lubrication. We can only speculate on the power output, but it should be around 350hp. A three-speed TH350 transmission replaced the Powerglide, and the seller upgraded the brakes to power-assisted front discs. They include most of the parts needed to convert the rear end to a 3.08 Posi, offering a perfect compromise between outright acceleration and open-road cruising. Although not stated specifically, it appears this Pontiac is ready to hit the road with a new owner behind the wheel.

The seller continued upgrading this Tempest when they focused on its interior. Originally trimmed in Blue vinyl with a bench seat, things have changed dramatically. They fitted bucket seats, a console, and retrimmed the upholstered surfaces in Parchment vinyl. By leaving the dash, carpet, and headliner untouched, the visual impact is quite stunning. It needs nothing, with no wear or other issues. There are also a few welcome upgrades, including a factory tachometer in the gauge cluster and a substantially upgraded retro-style radio. The seller includes the original radio if the buyer prefers a more “stock” look, but most readers will probably agree that leaving the interior as-is would be the most appropriate move.

Placing a potential value on modified classics is challenging because they are only ever worth what someone is willing to pay for them. Listing such vehicles via auction can be risky because if it doesn’t resonate with at least two people, disappointment can result. This 1965 Pontiac Tempest has attracted only seven bids at the time of writing. Still, the listing statistics suggest it has generated enough interest to expect the situation to improve during the final hours. If you’ve previously owned a Tempest, would you consider making a play for this potent ’65?

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