How to Power Tune Alfa Romeo Twin Cam Engines: The Speedpro Series

Alfa Romeo's Twin Cam engines have long been renowned for their performance and reliability. First introduced in the 1950s, these engines have powered some of the most iconic Alfa Romeo models, including the Giulietta, Giulia, and Spider. Over the years, Alfa Romeo has released a number of different Twin Cam engines, including the Speedpro series.

How to Power Tune Alfa Romeo Twin-Cam Engines (SpeedPro series)

by Jim Kartalamakis

4.8 out of 5

Language	:	English
File size	:	12910 KB
Text-to-Speech	:	Enabled
Screen Reader	:	Supported
Enhanced typesetting	:	Enabled
Print length	:	192 pages
Lending	:	Enabled
Item Weight	:	4.2 ounces
Paperback	:	44 pages
Dimensions	:	6 x 0.11 x 9 inches

FREE

The Speedpro series of engines was introduced in the 1970s and was used in a variety of Alfa Romeo models, including the Alfetta, GTV, and Spider. These engines are known for their high-revving nature and impressive power output. With proper modifications, it is possible to extract even more power from these engines.

Engine Modifications

There are a number of different engine modifications that can be performed to improve the power output of an Alfa Romeo Twin Cam engine. Some of the most common modifications include:

• Increasing the compression ratio: This can be done by reducing the combustion chamber volume. This will increase the pressure inside the combustion chamber, which in turn will increase the power output.
• Fitting a more aggressive camshaft: This will change the timing of the valve events, which can increase the power output at higher RPMs.
• Installing a larger carburetor or fuel injection system: This will increase the amount of fuel that is delivered to the engine, which will increase the power output.
• Fitting a free-flowing exhaust system: This will reduce the backpressure in the exhaust system, which will allow the engine to breathe more easily and increase the power output.

Choosing the Right Speedpro Engine

When choosing a Speedpro engine for your Alfa Romeo, there are a few things to keep in mind. First, you need to decide what type of performance you want. If you are looking for a mild increase in power, then you can choose a Speedpro engine with a lower compression ratio and a less aggressive camshaft. If you are looking for a more significant increase in power, then you can choose a Speedpro engine with a higher compression ratio and a more aggressive camshaft.

You also need to consider the size of your engine. The Speedpro series of engines is available in a variety of sizes, from 1.3 liters to 2.0 liters. The size of the engine will determine the amount of power that it can produce.

Installing a Speedpro Engine

Installing a Speedpro engine in your Alfa Romeo is a relatively straightforward process. However, it is important to follow the instructions carefully to ensure that the engine is installed correctly.

The first step is to remove the old engine from your Alfa Romeo. Once the old engine is removed, you can install the Speedpro engine. Be sure to connect all of the necessary hoses and wires. Once the engine is installed, you can start it up and enjoy the increased power.

Power tuning an Alfa Romeo Twin Cam engine is a great way to improve the performance of your car. By following the tips in this article, you can choose the right Speedpro engine for your needs and install it correctly. With a properly tuned engine, you can enjoy increased power and improved performance for years to come.