1970 Chrysler 300 440 TNT: Dynamite Performance In A Slow-Selling Full-Size Fuselage Chrysler

Left front 3q of a Mystic Gold 1970 Chrysler 300 two-door hardtop

Although buyer interest in full-size sporty cars had almost evaporated by the end of the ’60s, Chrysler continued offering its sporty 300 through 1971. A properly optioned Chrysler 300 like this 440 TNT hardtop was at least as fast as its storied ancestors, but it no longer drew much notice, and its sales were disappointing.

Right front 3q view of a 1956 Chrysler 300 hardtop
1956 Chrysler 300-B in Regimental Red with wire wheels / Patrick Ernzen – RM Sotheby’s

Commercial or technological progress is a funny thing sometimes. Newer models may be better than the older ones in every quantifiable respect and yet be perceived as diminished and inferior. It can be very difficult to compete with rose-colored recollections of storied older products, even where those legends would wither in the harsher light of newer expectations.

Closeup of a 300 B badge on a red car
1956 Chrysler 300-B in Regimental Red / Patrick Ernzen – RM Sotheby’s

So it was with the Chrysler 300. The 1955 Chrysler C-300 and its “Letter Series” successors were, for a while, very formidable full-size performance cars. The C-300 and 1956 300-B were essentially well-trimmed road racers, with extra-stiff suspensions and rorty solid-lifter cams. Their racing counterparts, which really weren’t all that different from the cars you could buy, racked up an impressive competition record. Chrysler never sold a lot of them, but they added considerable luster to the “Forward Look” line.

Side view of a 1962 Chrysler two-door hardtop coupe
1962 Chrysler 300 Sport two-door hardtop in Oyster White / GAA Classic Cars at the Palace

Starting in 1962, Chrysler added a “non-letter” 300 series, originally called the 300 Sport, which rode the coattails of its more powerful brethren, but was cheaper, softer, and milder than the 300 Letter Series cars. The Letter Series continued through 1965, but the concept was becoming less and less viable in an increasingly diversified marketplace brimming with hot intermediates. The 300 had been getting softer since the 1957 300-C, and many Chrysler fans felt the final editions no longer really earned their letters; opinions differ as to which was the last “real” Letter Series edition.

Left side view of a 1970 Chrysler two-door hardtop in an indoor studio space
1970 Chrysler 300 two-door hardtop in Mystic Gold with a tortoise grain vinyl top / Classic Auto Mall

The non-letter 300 stuck around until the 1971 model year. It sold okay at first, but within a few years, it suffered the same middle-child syndrome that afflicted a lot of middle-tier models of mid-priced brands, compounded by diminishing interest in sporty big cars. Its sporty vibe had become rather muted in any case: You could still get buckets and a center console, and the 300 came with a bigger standard engine, but other than concealed headlights and bucket seats, there wasn’t much you couldn’t order on a Newport or Newport Custom.

440 engine in a 1970 Chrysler
1970 440 TNT engine was rated at 375 hp and 480 lb-ft / Classic Auto Mall

Nonetheless, if you wanted a full-size performance car, Chrysler was still prepared to sell you one. In 1970, the crucial option was the 440 TNT engine, which cost a modest $79 more than the regular 440 cid V-8 that was standard on the 300. The TNT engine had a warmer cam — although it still had hydraulic lifters, and it wasn’t as racy as the “full-race” camshafts specified on the older Letter Cars — plus an oil pan windage tray and dual exhausts. With a 9.7 to 1 compression ratio, it required premium fuel.

Rear axle and dual exhausts under a 1970 Chrysler
Dual exhausts were standard with the 440 TNT / Classic Auto Mall

Chrysler rated the 440 TNT at 375 gross horsepower in 1970, a modest 25 hp bump over the standard 440. However, thanks to its low-restriction exhaust system, TNT engine’s advantage in as-installed net power was likely greater than that. I haven’t found any factory net ratings for the 1970 engine, but the 1971 version (which had slightly lower compression and rated 370 gross hp) boasted 305 net hp, a whopping 85 hp more than the standard 1971 440 (which was rated at 335 gross hp).

Console-mounted automatic shifter
H-D TorqueFlite was standard with the 440 TNT / Classic Auto Mall

TorqueFlite was standard on the 300, but the 440 TNT engine came with a heavy-duty transmission with an extra front planetary pinion gear and an additional front clutch plate. Axle ratio was 3.23 with the hotter engine. A floor shifter was specified with the console, which was optional with bucket seats.

Front view of a 1970 Chrysler in an indoor studio space
1970 Chrysler 300 two-door hardtop in Mystic Gold with a tortoise grain vinyl top / Classic Auto Mall

Equipped like this one, a 300 hardtop coupe had a curb weight of more than 4,500 lb, but it had enough muscle to make it a surprisingly fast car. Car Life tested a 1970 300 Hurst (a special edition version of this car, with similar weight and the same powertrain and suspension), and found it “closer to the Supercar class than you’d expect”: 0 to 60 mph in 7.1 seconds, 0 to 100 mph in 17.8 seconds, and the standing quarter mile in 15.3 sec. quarter at 94.43 mph. That was at least as fast as the street versions of the older Letter Series cars — in fact, this car was significantly quicker than the much more hardcore 1955–1956 C-300 and 300-B at speeds under 100 mph.

Right front 3q view of a 1970 Chrysler two-door hardtop in an indoor studio space
1970 Chrysler 300 two-door hardtop in Mystic Gold with a tortoise grain vinyl top / Classic Auto Mall

The 440 TNT engine came with a heavy-duty suspension package, with a bigger front anti-roll bar, thicker front torsion bars, and an extra leaf in the rear suspension. It was not very stiff in an absolute sense; its rear springs were only very slightly stiffer than the standard rear springs in a 1962 Chrysler Newport, and the heavy-duty front springs were actually softer. However, Car Life found that these cars handled surprisingly well despite their soft ride and numb steering. (Power steering was still optional on the 300, although only 0.1 percent of cars were built without it for 1970.)

Whitewall tire and wheel cover on a 1970 Chrysler
1970 Chrysler 300 came standard with H78-15 blackwalls; whitewalls or H70-15 RWL tires were optional / Classic Auto Mall

In handling, this car would have been handicapped slightly compared to the 300-H Car Life drove because it was ordered with H78-15 whitewalls rather than the lower-profile H70-15 tires on the Hurst car. However, the original buyer of the gold 300 wisely specified power front disc brakes, which were optional. Most 300s had power brakes in 1970, but front discs were only installed on about half of production. Chrysler still hadn’t fully sorted the proportioning issues that had made their early disc/drum brakes so prone to abrupt rear lockup, but the discs had better fade resistance than drums in these heavy cars.

Door trim of a 1970 Chrysler 300 with wind-up windows
1970 Chrysler 300 two-door hardtop with white vinyl upholstery / Classic Auto Mall

The base price of a 300 two-door hardtop in 1970 was $4,234, a sizable $645 more than a basic Newport hardtop, so it included somewhat better trim. Surprisingly, only 46 percent of 300 buyers specified power windows in 1970, although this is otherwise a heavily optioned car. Its original list price was $6,980, a relative worth of almost $65,000 in 2025 dollars.

Front bucket seats in a 1970 Chrysler
1970 Chrysler 300 two-door hardtop with white vinyl bucket seats and aftermarket seat covers / Classic Auto Mall

Obviously, white vinyl upholstery isn’t the easiest to keep clean, but this car’s Mystic Gold paint could also be combined black or dark green upholstery, so I’m not sure I understand the logic of ordering white vinyl and then covering the seats with ugly, uncomfortable plastic seat covers. I suppose it made sense to someone.

Steering wheel of a 1970 Chrysler; the top of the wheel rim is wrapped with tape
1970 Chrysler 300 with Tilt-A-Scope wheel and rim-blow horn / Classic Auto Mall

Except for its fancy Tilt-A-Scope “rim-blow” wheel, the dashboard was standard early ’70s Chrysler.

Instrument panel of a 1970 Chrysler
1970 Chrysler 300 with air conditioning and AM/FM radio / Classic Auto Mall

The higher price and sporty mission of the 300 didn’t provide any more instrumentation than the gas gauge and ammeter, and with the 440 TNT engine, this car would likely be able to peg its 120 mph speedometer. However, there’s a no-nonsense quality to the presentation that has a certain appeal — this seems like a dashboard designed by an engineer rather than a stylist.

Vinyl top on a 1970 Chrysler two-door hardtop; the vinyl has a mosaic grain
Tortoise grain vinyl top was optional for 1970 / Classic Auto Mall

This car was built concurrently with the 1970 Cordoba spring special, which had a special vinyl top with an Aztec relief. The original owner of this car specified the “tortoise grain” vinyl top, which has a kind of reptile skin pattern.

Right side view of a 1970 Chrysler two-door hardtop in an interior studio space
1970 Chrysler 300 two-door hardtop in Mystic Gold with a tortoise grain vinyl top / Classic Auto Mall

Some people still have strong opinions about these “Fuselage” Chrysler big cars, but unless you hate the color or the tortoise grain roof, there’s nothing particularly offensive about the styling of this car. Its proportions aren’t the most graceful and its detailing is on the bland side, but the worst I can say is that as a whole, it seems kind of anodyne. Given some of Chrysler’s more eccentric styling efforts of the ’60s, that’s not too bad.

Grille badge of a 1970 Chrysler 300
1970 Chrysler 300 two-door hardtop in Mystic Gold with a tortoise grain vinyl top / Classic Auto Mall

However, it didn’t seem to inspire much buyer excitement. Chrysler built 20,512 300s this year, 9,589 of those the two-door hardtop — much better than any of the Letter Cars, but a small chunk of Chrysler brand sales. (I don’t have any data on how many cars had the 440 TNT engine, but I suspect not too many.) After 1971, Chrysler decided they could get along just fine without the 300.

"THREE HUNDRED" badge on the tail of a 1970 Chrysler
1970 Chrysler 300 two-door hardtop in Mystic Gold / Classic Auto Mall

People who’d loved the Letter Series cars still mostly turned up their noses at these “plain” 300s. That some of them were faster than the vaunted ’50s Hemi cars and actually handled and stopped better was beside the point. The early Letter cars had been surprisingly brutish for big domestic models, especially ones with semi-premium badges, and everything that came later was inevitably perceived as dumbed-down and compromised.

Left rear 3q of 1970 Chrysler two-door hardtop in an interior studio space
1970 Chrysler 300 two-door hardtop in Mystic Gold with a tortoise grain vinyl top / Classic Auto Mall

For people who didn’t remember the old Letter Cars, the 300 was just a throwback to the now-dated buckets-and-console fad of the early ’60s. Most automakers had given up offering buckets on full-size cars by this time: You could still get them on a Ford XL or Mercury Marauder X-100, and Plymouth offered them through 1973, but it appears the only full-size GM cars of 1970 that still offered buckets were the Buick Wildcat Custom and Oldsmobile Delta 88 Royale. People who wanted sporty cars mostly bought pony cars, hot intermediates, or maybe a Duster 340.

Rear view of a 1970 Chrysler two-door hardtop in an interior studio space
1970 Chrysler 300 two-door hardtop in Mystic Gold with a tortoise grain vinyl top / Classic Auto Mall

To make matters worse, if you DID want a full-size car that could run with some (but not all) midsize muscle cars, the 300 was sharing the showroom with the similar Plymouth Sport Fury GT, which was somewhat cheaper and came with the even hotter 440 6-barrel engine. The GT wasn’t a big seller either, but between that and the memories of the older Letter Series, Chrysler was competing with itself, and losing.

 

Related Reading

Vintage Review: 1970 Chrysler 300H – Road Test Magazine Reviews A Very Rare Chrysler (by GN)

1970 Chrysler Newport Cordoba: The Rare Fuselage Cordoba C-Body (by Aaron Severson)

Curbside Classic: 1970 Chrysler 300 Hurst – A Spicy Cocktail Created By George And Walter, With Help From Linda (by Jason Shafer)

Vintage Road Test: 1970 Plymouth Sport Fury GT 440 Six Pack – A Rare Road Test For A Rare Car (by Aaron Severson)

Charting The Big Cars, 1965-1974 – Were Chrysler’s Fuselage Cars A Failure? Which Brand Dropped The Most? (Hint: It Wasn’t A Mopar) (by Paul N)

1971 Chrysler Newport Royal: Chrysler’s Deadly Sin #6, The Underachieving Fuselage Years (by J P Cavanaugh)