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The Plymouth Barracuda, introduced in 1964, has become a classic muscle car with a devoted following. Among its various engine options, the 273 and 340 cubic inch V8s stand out for their performance potential. This article delves into the differences between these engines and explores which camshaft and headers can significantly enhance their power output.
Understanding the Plymouth Barracuda Engines
The Barracuda was initially offered with a range of engines, but the 273 and 340 cubic inch V8s are particularly noteworthy. The 273, introduced in 1964, was the first V8 available in the Barracuda, producing around 180 to 235 horsepower depending on the configuration. The 340, introduced in 1968, was a performance-oriented engine that could produce up to 280 horsepower, making it a favorite among enthusiasts.
Comparing the 273 and 340 Engines
- 273 V8: Known for its smooth power delivery, it was available in two-barrel and four-barrel configurations.
- 340 V8: A high-performance engine designed for speed, featuring a larger bore and a more aggressive camshaft.
Choosing the Right Camshaft
The camshaft plays a crucial role in determining the performance characteristics of an engine. For the 273, upgrading to a performance camshaft can yield significant gains in horsepower and torque. Meanwhile, the 340 already comes with a performance-oriented cam, but further upgrades can push its limits even further.
Camshaft Options for the 273
- Mopar Performance Cam: A solid choice that increases horsepower while maintaining good drivability.
- Comp Cams Xtreme Energy: Offers a more aggressive profile for increased performance at higher RPMs.
Camshaft Options for the 340
- Mopar Purple Shaft: Highly regarded for its aggressive lift and duration, ideal for racing applications.
- Comp Cams Thumpr Series: Provides a classic muscle car sound with improved performance.
Header Upgrades: Importance and Options
Headers are essential for improving exhaust flow, which can significantly enhance engine performance. Upgrading to high-performance headers can help both the 273 and 340 engines breathe better, leading to increased horsepower and torque.
Headers for the 273
- Hedman Hedders: Known for their quality and fit, these headers improve exhaust flow and sound.
- Hooker Super Comp Headers: Designed for maximum performance, these headers offer excellent flow characteristics.
Headers for the 340
- Doug’s Headers: Custom-fit headers that provide exceptional flow and performance gains.
- Dynomax Headers: Known for their durability and performance, these headers are a great option for the 340.
Combining Camshaft and Header Upgrades
To maximize performance, it’s essential to pair the right camshaft with suitable headers. For the 273, a performance camshaft combined with quality headers can yield a noticeable increase in horsepower. Similarly, for the 340, optimizing both components can lead to impressive performance gains, making the Barracuda a true powerhouse on the road.
Conclusion
In summary, upgrading the camshaft and headers on the Plymouth Barracuda can make a significant difference in performance. Whether you are working with the 273 or the 340 engine, carefully selecting the right components will enhance your driving experience and unleash the full potential of this classic muscle car.