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How much horsepower does a 1970 Challenger RT 440 six pack have?


The 1970 Dodge Challenger RT 440 Six Pack is an iconic muscle car that holds a special place in automotive history. Known for its aggressive styling and powerful performance, this car was a favorite among enthusiasts during the golden era of American muscle cars. In this article, we’ll explore the horsepower of this legendary vehicle and what made it such a standout in its time.


The Power Behind the 440 Six Pack


The 1970 Dodge Challenger RT 440 Six Pack was equipped with a 440 cubic-inch V8 engine featuring a trio of two-barrel carburetors, which is where the "Six Pack" name originates. This setup was designed to deliver exceptional power and performance, making it a formidable competitor on the streets and the drag strip.


In terms of horsepower, the 440 Six Pack engine was officially rated at 390 horsepower. This rating, however, was often considered conservative, as many enthusiasts and experts believed the actual output to be slightly higher. The engine also produced an impressive 490 lb-ft of torque, ensuring strong acceleration and thrilling performance.


Why the 440 Six Pack Stood Out


Several factors contributed to the 440 Six Pack's reputation as a high-performance powerhouse:



  • Innovative Carburetor Setup: The three two-barrel carburetors provided a unique balance of power and efficiency, allowing the engine to deliver strong performance across a wide RPM range.

  • High-Performance Components: The engine featured heavy-duty internals, including forged pistons and a high-lift camshaft, to handle the increased power output.

  • Muscle Car Heritage: The Challenger RT 440 Six Pack was part of Dodge's legendary lineup of muscle cars, which included other iconic models like the Charger and Super Bee.


Legacy of the 1970 Challenger RT 440 Six Pack


The 1970 Dodge Challenger RT 440 Six Pack remains a highly sought-after collector's car today. Its combination of bold styling, raw power, and historical significance makes it a favorite among muscle car enthusiasts. Whether you're admiring one at a car show or dreaming of owning one, the 440 Six Pack continues to capture the imagination of automotive fans around the world.


If you’re a classic car owner or enthusiast looking to maintain or restore a vehicle like the 1970 Challenger RT, Kevin’s Autos is here to help. With years of experience in car maintenance and repair, we can ensure your classic car stays in top condition for years to come.


Frequently Asked Questions

How much HP does a 440 six pack have?


390 hp
The stock Six Pack carbs come calibrated exactly as factory issued-designed to work on a mildly-cammed 390 hp 440 with iron exhaust manifolds and stock #906 or #346 heads.



Which is faster 426 Hemi or 440 six pack?


The original 426 Hemi cars raced by the car magazines averaged 13.34 in a 1/4 mile race compared to the six pack's average time of 13.64. Although the Hemi is faster, the six pack can often take the Hemi in a shorter, stoplight to stoplight race.



How much horsepower does a 1970 Challenger RT have?


1970 Dodge Challenger Engine Options:
383-cubic-inch V-8; 290 horsepower. 383-cubic-inch V-8; 330 horsepower. 383-cubic-inch V-8; 335 horsepower.



Which is faster, 426 Hemi or 440 Six Pack?


The original 426 Hemi cars raced by the car magazines averaged 13.34 in a 1/4 mile race compared to the six pack's average time of 13.64. Although the Hemi is faster, the six pack can often take the Hemi in a shorter, stoplight to stoplight race.



What is the top speed of a 1970 Dodge Challenger RT 440 six pack?


Performance

0 - 100 kph6.2 s
0 - 60 mph5.9 s
Top speed235 kph (146 mph)



How much horsepower does a 1970 Charger RT 440 have?


Powered by a 440 Magnum Six Pack V8 engine fed by three two-barrel carburetors producing 390 hp and 490 lb-ft of torque through a 4-speed manual transmission with Hurst Pistol Grip.



How much HP can a 440 handle?


Although the most powerful factory stock 440 engines produced a rated 390 gross horsepower, the OEM blocks can take power in the 600hp range, and survive practically indefinitely at the 500-550hp level. Mopar built quite a bit of strength into the bottom end of these engines.



How much horsepower does a 1970 Challenger 440 six pack have?


390 HP
The standard transmission was a 3-speed manual. Optional R/T engines were the 375 HP 440 cu in (7.2 L) Magnum, the 390 HP 440 cu in (7.2 L) Six-Pack and the 426 cu in (7.0 L) Hemi rated at 425 HP at 5,000 rpm and 490 lb⋅ft of torque at 4,000 rpm. The R/T was available in either the hardtop or convertible.



How much horsepower did the 440 really have?


And while the Mopar 440 does several things very well, we've always felt that with a few tweaks the engine was capable of well over the 375 horsepower rating it got from the factory.



How much horsepower did the Boss 429 really have?


375 HP
The Boss 429 engine used a single Holley four-barrel carburetor rated at 735 CFM mounted on an aluminum intake manifold. All these cars had 4-Speed Manual Transmissions and the Boss was rated very conservatively at 375 HP while actual output was believed to be well over 500 horsepower.


Kevin's Auto

Kevin Bennett

Company Owner

Kevin Bennet is the founder and owner of Kevin's Autos, a leading automotive service provider in Australia. With a deep commitment to customer satisfaction and years of industry expertise, Kevin uses his blog to answer the most common questions posed by his customers. From maintenance tips to troubleshooting advice, Kevin's articles are designed to empower drivers with the knowledge they need to keep their vehicles running smoothly and safely.