How much would you pay for this one?

The triple-carb 440 under this Cuda’s hood was not a casual option. Plymouth built barely 1,700-some of them in 1970, split between four-speed and automatic cars. Here is what made the 440 Six Pack such a rare and serious performance package, and why guessing its value takes more than eyeballing the sheet metal.

A classic red muscle car parked outdoors near a building.

Putting a price on a car like this one is harder than it looks, because the number people expect and the number these cars actually command at auction rarely line up. The 440-cubic-inch triple-carb engine under that long hood was not just an option box Plymouth casually checked; it was one of the rarest, most deliberately built performance packages the brand ever offered, and only a few thousand buyers ever ordered one. Between the six-barrel intake, the four-speed-versus-automatic split, and a production run smaller than most people assume, guessing a fair number for this Cuda means understanding exactly how uncommon the combination under its hood really was.

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A Six-Pack, Not a Single Four-Barrel

For 1970, Plymouth offered the Cuda with an optional 440-cubic-inch V8 wearing the Six Pack or 440+6 badge, referring to its three two-barrel Holley carburetors instead of a single four-barrel. The setup made 390 horsepower at 4,700 rpm and 490 lb-ft of torque at 3,200 rpm, numbers that put it right alongside the 426 Hemi as one of the most serious factory engines Chrysler built that year.

How Rare Is Rare

Plymouth built just 1,784 Cudas with the 440 Six Pack in 1970. Breaking that down further, roughly 1,755 of them were hardtops, with 902 leaving the factory with a four-speed manual and the remainder paired to a TorqueFlite automatic. That is a genuinely small slice of the total Cuda production run for the year, and it is the single biggest reason these cars command such strong money whenever a numbers-matching example changes hands today.

What Drives the Price

Auction results for 440 Six Pack Cudas swing enormously based on documentation, originality, and drivetrain matching. A numbers-matching four-speed car in solid original condition sits at the very top of the range, while a car with a replacement engine or a repainted body falls well below it. Add in the broader Mopar muscle car boom of recent years, and a genuinely correct 1970 Cuda 440+6 is one of the harder cars on this list to guess a fair number for without seeing the paperwork first.

A First-Year E-Body

The 1970 model year wasn’t just significant for the engine option — it was the first year Plymouth built the Barracuda on Chrysler’s new E-body platform, sharing its underpinnings with the newly introduced Dodge Challenger. That fresh platform gave the Cuda a wider stance and more aggressive proportions than the compact-based Barracudas that came before it, and it’s exactly the shape most people picture when they hear the name today.

440 Six Pack vs. the Hemi

Buyers cross-shopping the 440 Six Pack against the range-topping 426 Hemi were choosing between two very different personalities: the Hemi’s 425 horsepower rating looked more impressive on paper, but the 440 Six Pack’s broader torque curve and noticeably lower price made it the more street-friendly choice for plenty of period buyers, and some contemporary road tests actually clocked six-pack cars as quick or quicker in real-world acceleration.

The Color Palette That Defined the Era

1970 Cudas are almost as famous for their optional “High Impact” color palette — shades like Lemon Twist, Moulin Rouge, and Vitamin C — as they are for their engines, a marketing push aimed squarely at buyers who wanted their car as loud visually as it was mechanically. A car finished in a more conservative color, like the one pictured here, represents the other side of that buyer base: someone who wanted the performance without needing the paint to shout about it.

Why Documentation Decides Everything

Because 440 Six Pack production was already limited to begin with, and because these cars have been actively reproduced and cloned for decades due to their value, a fender tag, broadcast sheet, or verified build sheet has become essential to establishing what any individual car actually is before serious money changes hands. That paperwork trail is exactly why two visually identical 1970 Cudas can land worlds apart at auction depending on what can and can’t be proven.

The Shaker Hood That Became an Icon

Cudas equipped with the largest engine options could be ordered with the functional “Shaker” hood scoop, which bolted directly to the air cleaner and visibly vibrated with the engine at idle — a genuinely functional design, not just a styling exercise. That shaking scoop became one of the most recognizable visual signatures of the entire E-body generation, instantly associated with serious performance even to people who’ve never opened a Mopar parts catalog.

Why Six Pack Cars Trailed the Hemi in Prestige, Not Speed

Despite its real-world performance, the 440 Six Pack never carried quite the same mystique as the 426 Hemi, largely because the Hemi’s racing pedigree and higher price tag gave it more bragging rights on paper. That gap in reputation has narrowed considerably among today’s collectors, many of whom now recognize the Six Pack as the smarter, more drivable choice for a car meant to actually be driven rather than trailered to shows.

A Hood That Signals the Engine Underneath

Beyond the Shaker option already mentioned, a standard hood on a 440-equipped Cuda still carried its own factory hood pins and scoop treatment, giving even non-Shaker cars a visibly different profile from a base-engine Barracuda parked next to it. Spotting that difference at a glance is exactly the kind of detail seasoned Mopar collectors rely on before ever popping the hood.

A Number That Still Moves Markets

The 440 Six Pack designation alone is enough to shift an asking price meaningfully compared to a garden-variety single four-barrel 383 Cuda wearing similar trim, which is exactly why sellers make a point of highlighting the engine code prominently in any listing or photo caption.

A Package That Rewarded Patience at the Dealership

Ordering the 440 Six Pack in 1970 sometimes meant a longer wait at the dealership than a standard four-barrel car, since Chrysler built the triple-carb setup in more limited runs than its mainstream engine options, one more reason patient buyers who held out for it ended up with a genuinely uncommon car.

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