When it comes to modifying engines, choosing the right camshaft can significantly improve an engine’s performance. A camshaft is a crucial part of an engine’s valvetrain system that regulates the opening and closing of the engine’s valves, which affects the airflow and fuel delivery in the engine. For the stock 350 engine, the biggest camshaft that you can use will depend on several factors. In this article, we will explore what the biggest cam for stock 350 is, and what factors influence its selection.
What is the biggest cam for stock 350?
The biggest camshaft that you can use for a stock 350 engine is the Comp Cams Xtreme Energy 268H camshaft. This camshaft has a duration of 268 degrees for both the intake and exhaust valves, with a lift of 0.477 inches for the intake and exhaust valves. This camshaft is compatible with the stock valve springs and can provide a noticeable improvement in the engine’s horsepower and torque.
However, it’s important to note that installing a big camshaft can also affect the engine’s drivability, idle quality, and fuel economy.
What factors influence the selection of the biggest cam for stock 350?
Several factors can influence the selection of the biggest camshaft for the stock 350 engine. These factors include:
- Engine components – The size and strength of the engine components, including the valve springs, lifters, and rocker’s arms, can determine the maximum lift and duration of the camshaft that you can use.
- Intended use – The type of driving that you plan to do, whether it’s racing or street driving, can influence the selection of the camshaft. For instance, a camshaft with a high lift and duration may provide better performance on the track but can be too aggressive for street use.
- Exhaust system – The exhaust system can also play a role in selecting the biggest camshaft. A free-flowing exhaust system can help to improve the engine’s performance by reducing back pressure, allowing for a bigger camshaft.
Can I install a big camshaft without making any other modifications?
It’s not recommended to install a big camshaft without making other modifications to the engine, such as upgrading the valve springs, lifters, and rocker’s arms. Installing a big camshaft without these upgrades can cause engine failure.
Will a big camshaft affect my fuel economy?
Yes, installing a big camshaft can negatively impact your fuel economy. A big camshaft can increase the amount of fuel that the engine consumes, which can reduce fuel economy.
Will a big camshaft affect my engine’s idle quality?
Yes, installing a big camshaft can affect your engine’s idle quality. A big camshaft can cause the engine to have a rough and lumpy idle, which can make the engine less smooth and less pleasant to drive.
Conclusion
Selecting the biggest camshaft for a stock 350 engine requires careful consideration of several factors, including engine components, intended use, and exhaust system. The Comp Cams Xtreme Energy 268H camshaft is the biggest camshaft that you can use for a stock 350 engine, but it’s important to note that installing a big camshaft can affect the engine’s drivability, idle quality, and fuel economy. When choosing a camshaft, it’s best to consult with an experienced engine builder or mechanic to determine the best option for your engine and intended use.
