Quick Take
The Mopar 440 and its later sibling, the 440 Magnum, both powered late‑’60s Dodge and Plymouth muscle cars, but the Magnum adds upgraded heads, a higher‑flow carburetor, and a stronger bottom end for more power and a bit better fuel use.
Mopar 440 vs 440 Magnum: Key Differences Explained
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Image: Mopar 440 vs 440 Magnum: Key Differences Explained – Performance Comparison and Specifications
| Engine | Mileage (mpg) | Price (US$) | Top Features |
|---|---|---|---|
| 440 (Standard) | 12‑13 city / 16‑17 hwy | ~$3,500 (1970) • $35,000‑$45,000 today |
|
| 440 Magnum | 13‑14 city / 17‑18 hwy | ~$3,800 (1971) • $40,000‑$55,000 today |
|
Design & Looks
The original 440 debuted in 1966 with a simple iron‑block design that fit under the hood of the Dodge Charger and Plymouth Road Runner. Visually, there’s no external difference—both engines use the same “big‑block” shape and share the same bell‑housing pattern.
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The Magnum version, introduced in 1971, kept the same external dimensions but received a fresh set of cylinder heads. Those heads sport larger valves and better ports, giving the engine a slightly more aggressive look when the valve covers are removed.
Performance & Mileage
Both engines are 7.2‑liter V8s, but the Magnum’s head work and a higher‑compression pistons push output from about 375 hp in the standard 440 to roughly 390‑410 hp in the Magnum, depending on the carb setup.
Because the Magnum breathes easier, owners often report a marginally better fuel economy—about 1 mpg improvement on the highway. In real‑world driving, you can expect 12‑13 mpg city for the standard 440 and 13‑14 mpg city for the Magnum, with highway numbers in the high‑teens.
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Price & Rivals
When new, the 440 cost around $3,500, while the Magnum was a bit pricier at $3,800. Today, collectors pay $35‑45 k for a good 440 and $40‑55 k for a well‑preserved Magnum, depending on mileage and originality.
Their main competition back then were the Chevrolet 427 and the Ford 428, both of which offered similar displacement but different torque curves. The Mopar engines were prized for their low‑end grunt, making them a favorite on the drag strip.
FAQ
- What is the horsepower difference between the 440 and 440 Magnum? The standard 440 makes about 375 hp, while the Magnum typically reaches 390‑410 hp.
- Is the 440 Magnum more fuel‑efficient? Yes, its improved heads and carburetor give roughly 1 mpg better highway mileage.
- Which engine is more valuable to collectors? The Magnum usually commands a higher price because of its performance upgrades and lower production numbers.
Share Your Thoughts
If you’ve driven either engine or own a classic with one, drop a comment below and let us know how they compare on the road.
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Source: Read Official News
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