The Dodge Charger Six Pack was a high-performance variant with a 440-cubic-inch engine and three two-barrel carburetors
The Six Pack was Dodge's name for a specific engine and carburetor setup that appeared in the 1969 and 1970 Charger. The engine itself was a 440-cubic-inch V8 that produced 375 horsepower in 1969 and 390 horsepower in 1970, according to Dodge's factory ratings. The "Six Pack" name came from the three two-barrel carburetors mounted on a single intake manifold — six barrels total, hence the name.
This was not a unique engine to Dodge. Plymouth, Chrysler, and other Mopar divisions used the same 440 engine and carburetor arrangement under different names. Plymouth called theirs the "Six Barrel," while Chrysler used "Magnum." The mechanical setup was identical across all of them: one center carburetor that fed fuel at idle and cruise, and two outer carburetors that opened under acceleration to deliver extra fuel and air.
The Six Pack Charger was built to compete directly with muscle cars like the Chevrolet SS 454 and the Pontiac GTO Judge. It was a factory-built performance car, not a kit or aftermarket modification. Dodge offered it as an option on the 1969 and 1970 Charger, and it became one of the most recognizable muscle cars of that era.
Key Takeaways
- The Six Pack was a 440-cubic-inch V8 engine with three two-barrel carburetors, producing 375 to 390 horsepower depending on the year.
- The three carburetors worked together: one handled idle and cruise, while two additional carburetors opened under hard acceleration.
- Dodge offered the Six Pack in the 1969 and 1970 Charger as a factory performance option, not an aftermarket upgrade.
- Other Mopar brands used the same engine and carburetor setup under different names, such as Plymouth's "Six Barrel" and Chrysler's "Magnum."
How the Three-Carburetor System Worked
The three two-barrel carburetors were not three separate engines or three independent fuel systems. They were three carburetors bolted to a single intake manifold, all feeding the same eight cylinders. The center carburetor was the primary unit and handled all fuel delivery when the engine was idling or cruising at steady throttle. It was mechanically linked to the gas pedal, so pressing the pedal opened its throttle plates first.
The two outer carburetors were secondary units. They remained closed until the driver pressed the accelerator hard enough to trigger a mechanical linkage. Once that happened, the secondary carburetors opened and began feeding fuel and air directly into the intake manifold. This sudden increase in fuel and air created the power surge that muscle car drivers felt when they floored the pedal. The system was entirely mechanical — no computers, no sensors, no electronic controls.
This design had a practical advantage over a single large carburetor: it kept the engine efficient at low speeds and delivered maximum power when needed. A single 440-cubic-inch carburetor would have been oversized for idle and cruise, wasting fuel. The three-carburetor setup solved that problem by using only what was needed until the driver demanded full power.
Performance Specifications and Real-World Numbers
Dodge's factory rating for the 1969 Six Pack Charger was 375 horsepower and 470 pound-feet of torque. In 1970, the rating increased to 390 horsepower and 490 pound-feet of torque. These were net horsepower figures, meaning they were measured with the engine installed in the car with all accessories running — a more realistic number than the gross horsepower figures some competitors used.
The actual output was likely higher than the factory rating. Testing by automotive magazines in the 1970s suggested the Six Pack produced somewhere between 400 and 425 horsepower in real-world conditions. The difference between factory ratings and actual output was common in that era, partly because manufacturers were conservative with their claims and partly because test conditions varied.
The Six Pack Charger could accelerate from 0 to 60 miles per hour in roughly 6.5 to 7 seconds, depending on the transmission and rear axle ratio. The quarter-mile took approximately 14.5 to 15 seconds at 95 to 100 miles per hour. These numbers were competitive with other muscle cars of 1969 and 1970, though not the fastest. The Dodge Charger R/T with the 426 Hemi engine was faster, but the Six Pack was more affordable and easier to maintain.
Why Dodge Called It the Six Pack
The name "Six Pack" was pure marketing. Dodge wanted a memorable, catchy name that would appeal to young buyers and stand out on the showroom floor. The number six referred to the six carburetor barrels, but the name also evoked the idea of a six-pack of beer — something desirable, fun, and worth having. It was a deliberate choice to make the car sound exciting and powerful.
The name worked. The Six Pack Charger became iconic, and the name stuck in automotive history. Even today, more than 50 years later, people recognize "Six Pack" as referring to that specific Mopar engine and carburetor setup. Other manufacturers used different names for the same technology, which is why the Six Pack name is uniquely associated with Dodge.
Six Pack Charger vs. Other 1969-1970 Charger Engines
Dodge offered several engine options in the 1969 and 1970 Charger. The base engine was a 318-cubic-inch V8 with 230 horsepower. A 383-cubic-inch V8 with 290 horsepower was available as a mid-range option. The Six Pack 440 sat above both of those. At the top of the lineup was the 426 Hemi, a legendary engine that produced 425 horsepower and was the fastest Charger you could buy.
The Six Pack occupied a middle ground: more powerful than the 383, less expensive and more fuel-efficient than the Hemi, and significantly more powerful than the base 318. For buyers who wanted serious performance without the premium price and fuel consumption of the Hemi, the Six Pack was the logical choice. It was also more reliable than the Hemi in everyday driving, since the Hemi's higher compression ratio and aggressive tuning made it less forgiving of poor fuel quality or maintenance lapses.
| Engine | Displacement | Horsepower (1970) | Torque (1970) |
|---|---|---|---|
| Base V8 | 318 cu in | 230 hp | 320 lb-ft |
| Mid-range V8 | 383 cu in | 290 hp | 390 lb-ft |
| Six Pack 440 | 440 cu in | 390 hp | 490 lb-ft |
| 426 Hemi | 426 cu in | 425 hp | 490 lb-ft |
Production Numbers and Rarity Today
Dodge built Six Pack Chargers for only two model years: 1969 and 1970. Production numbers were modest compared to base-model Chargers. In 1969, Dodge produced approximately 500 Six Pack Chargers. In 1970, the number was higher but still relatively small — somewhere between 1,000 and 1,500 units, though exact figures vary depending on the source.
This limited production makes Six Pack Chargers valuable today. A well-preserved original Six Pack Charger can sell for $50,000 to $100,000 or more at auction, depending on condition, mileage, and documentation. Restored examples command similar prices. Even project cars — those needing significant work — typically sell for $20,000 to $40,000. The rarity, the iconic name, and the performance reputation all contribute to the high value.
Frequently Asked Questions
Did the Six Pack engine come in any other Dodge models besides the Charger?
Yes. Dodge offered the 440 Six Pack in the Coronet, Charger R/T, and Super Bee during 1969 and 1970. Plymouth offered the same engine in the Road Runner and Satellite under the name "Six Barrel." The engine itself was a standard Mopar 440, so it was available across multiple models and brands within the Chrysler Corporation.
How much fuel did a Six Pack Charger use?
Real-world fuel economy was typically 10 to 12 miles per gallon in mixed driving, and as low as 8 to 9 miles per gallon in heavy city traffic or aggressive driving. Highway driving at steady speeds could yield 12 to 14 miles per gallon. These numbers were typical for large V8 engines of that era and reflected the fuel consumption patterns of the 1970s, before fuel efficiency became a major design priority.
Could you buy a Six Pack Charger with an automatic transmission?
Yes. Dodge offered the Six Pack with both the Torqueflite 727 three-speed automatic and the A833 four-speed manual transmission. The automatic was more popular with buyers, though the manual transmission was preferred by performance enthusiasts because it allowed more direct control and slightly better acceleration times. Both transmissions were durable and are still found in surviving Six Pack Chargers today.
What made the Six Pack different from a single large carburetor?
A single large carburetor would have been oversized for idle and cruise speeds, wasting fuel. The three-carburetor setup used only the center carburetor at low speeds and added the two secondary carburetors under hard acceleration. This kept the engine efficient during normal driving while delivering maximum power when the driver demanded it. The system was entirely mechanical and required no electronic controls.