1975 Pontiac Grand Prix J Coupe 2-door 6.6l on 2040-cars

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Classic Pontiac Trans Am Firebird Super Duty 455 sells for nearly $90,000

Historically, the Pontiac Firebird Trans Am raised the performance levels a notch or two over a plain Firebird in the muscle car hierarchy of the Sixties. But the Super Duty 455 version of the Trans Am — that number represents the cubic inches of the hand-assembled V8 engine — moved the performance needle big time in 1974. So much so that a clean example of the machine sold recently on the Hagerty Marketplace auction site for $89,296. Advertised with just under 54,000 miles on the clock and having undergone a thorough restoration, the Buccaneer Red model was one of just 943 Pontiac Firebirds equipped with the Super Duty 455 package for the 1974 model year. That build had also been offered in 1973. The Hagerty listing drew more than 21,000 views and 39 bids. According to Hagerty's valuation report, a similar car would be worth $85,700 in good condition, and $103,000 if it was in ‘“concours condition.” The Super Duty motor borrowed technology from the lineÂ’s 366-cubic-inch NASCAR engine, and featured heavy-duty connecting rods and an entirely new block with a revised crankshaft and heads to deliver a claimed 310 horsepower. The Firebird that sold was indeed loaded, with a three-speed Hydra-matic transmission (which surely reduced its overall value), power locks and windows, AC, dual exhausts, heavy duty stabilizer bars all around, and a “custom Interior trimmed in Red perforated Morrokide vinyl upholstery.” The entry of PontiacÂ’s pony car in the U.S., facing off against the Mustang and Camaro, dates back to 1967, when it was offered with an inline six and optional V8. The first Trans Ams were introduced two years later, the name derived from a handling package. General Motors ceased production of new Pontiacs in 2002 owing to declining sales and losing stakes in the sports coupe market. The big 455-cid V-8 had disappeared years earlier.

Junkyard Gem: 2001 Pontiac Bonneville SSEi

The General's Pontiac Division sold Bonnevilles from 1958 through 2005, which turned out to be well over half of the marque's existence. Named after the Bonneville Salt Flats, some Bonnevilles were huge but pretty quick, others were slow-motion land yachts, and some were nearly indistinguishable from their Buick and Oldsmobile brethren. The final generation, sold for the 2000 through 2005 model years, were among the quickest and most distinctive-looking Bonnevilles ever built, but they arrived in showrooms at a time when the clock was ticking for the division's very survival. Today's Junkyard Gem is one of those cars, an '01 with the hot-rod SSEi package. The Bonneville SSEi first appeared in the 1992 model year, just a year after the Buick Park Avenue Ultra was the first of many GM cars to get the 3.8-liter Buick V6 with an Eaton supercharger bolted on top. Production of the Bonneville SSEi continued through the 2003 model year, after which the GXP version and its Cadillac Northstar V8 took over. The 2001 version of this engine made 240 horsepower, good for plenty of torque-steery fun. Could you get this car with a manual transmission? What do you think? Some cursory research indicates that 1970 was the last model year for a three-pedal Bonneville, and even those cars must be incredibly rare. This one looks to have been in nice shape when it arrived here, with the original manuals still in the glovebox. By 2006, the Bonneville was gone; four years later, Pontiac was gone. This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings. Stop all black Bonnevilles!

Porsche Boxster Spyder to get GT3's 4.0-liter flat six?

It's been a merry-go-round the past few months, the rumormill focused on what will power the next Porsche Boxster Spyder. First came hearsay of a flat-six going into the special edition of a model line known for its turbocharged four-cylinder engines. Then came tattling that the flat-six in question was the naturally aspirated, 4.0-liter from the 911 GT3. A couple of weeks ago we wrote " we'd be surprised if Porsche packed anything other than a turbocharged flat-four under the skin." But Autocar has a new report that, indeed, a downtuned version of the 500-horsepower 4.0-liter from the GT3's rump will move to the Boxster Spyder's midsection. The Autocar piece follows a Wheels magazine article from last November, and the prediction isn't outrageous. When Car and Driver reviewed the last Boxster Spyder, it wrote, "the hand-me-down six comes from the older 911 Carrera S, not to be confused with the new turbocharged 3.0-liter flat-six that powers the refreshed 911." If we can believe a recent report from Automobile about the 992-series 911 due later this year, the same thing is happening: The 991.2-series GT3 bequeaths its powerplant to the smaller sibling, and the 992-series GT3 moves to a 3.8-liter, twin-turbo flat-six with around 550 hp. Autocar quotes Andreas Preuninger, the Porsche engineer leading the development of all of these wunderkinds, saying of the Boxster earlier this year, "Natural aspiration is one of our main USPs. ... [We] think we can achieve throttle response and immediacy a little bit better with an atmospheric high-revving engine than any kind of turbo." We'll guess that means, by inference, that the GT3 is about to age out of naturally-aspirated university. The limited-edition Boxster Spyder might carry the torch with the 4.0-liter, with output somewhere around 430 hp. The Cayman GT4 could do the same. Or, who knows, an evolution of the 375-hp, 3.8-liter flat-six in the previous Boxster Spyder might burble out of left field. We expect to see the Boxster Spyder late this year. Until then, we'll wait to see what the merry-go-round says next time the Zuffenhausen horse comes around. Related Video: Featured Gallery Porsche 718 Boxster Spyder spy shots View 13 Photos News Source: Autocar via JalopnikImage Credit: CarPix Rumormill Pontiac Convertible Luxury Special and Limited Editions Performance porsche 911 gt3