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What is the bore size of a stock 4.6 Ford?

The bore size of a stock 4.6 Ford engine is 90.2 mm (3.55 inches). This is the diameter of the engine's cylinders, which is a key specification that determines the engine's displacement and power output.


Understanding the 4.6 Ford Engine Bore Size


The 4.6 Ford engine is a popular V8 engine used in many Ford vehicles, including the Ford Mustang, Ford F-150, and Ford Crown Victoria. The bore size, along with the engine's stroke, determines the total displacement of the engine, which is a measure of the volume of air and fuel the engine can intake and combust.


The 4.6 Ford engine has a bore size of 90.2 mm, which is approximately 3.55 inches. This, combined with a stroke of 90 mm (3.54 inches), gives the engine a total displacement of 4.6 liters or 281 cubic inches.


Importance of Bore Size in Engine Design


The bore size of an engine is a critical design parameter that affects several key performance characteristics:



  • Displacement: The bore size, along with the stroke, determines the total displacement of the engine, which is a measure of the engine's power potential.

  • Airflow: A larger bore size allows for increased airflow into the engine, which can improve power and efficiency.

  • Cooling: The bore size affects the surface area of the engine's cylinders, which impacts the engine's cooling requirements and heat dissipation.

  • Structural Integrity: The bore size also affects the structural integrity of the engine block, as larger bores require stronger materials and design to withstand the high pressures and forces generated during combustion.


Engineers carefully consider the bore size, along with other engine design parameters, to optimize the performance, efficiency, and reliability of the engine.

What is the bore size of the 5.9 Magnum?


The LA 360 cu in (5.9 L) has a bore and stroke of 4 in × 3.58 in (101.6 mm × 90.9 mm).



What is the stock bore size of a 4.6 4v?


3.550 in.



Is a 4.6 a 281?


The 4.6 L (281 CID) V8 has been offered in 2-valve SOHC, 3-valve SOHC, and 4-valve DOHC versions. It has also been produced with both iron and aluminum blocks.



What year Ford has the best 4.6 engine?


2005-2010 gt with the 4.6L. These engines have been shown to be extremely reliable and can easily hit over 200k and some people even hitting 400k. The manual transmission in it is also fantastic. The reason, however, that this gets the top spot is because of the cheapness of parts.



What is the bore and stroke of a 4.6 Ford?


The 4.6 L's bore and stroke are nearly square at 3.552 in × 3.543 in (90.2 mm × 90.0 mm), respectively. Deck height for the 4.6 block is 8.937 in (227.0 mm) and connecting rod length is 5.933 in (150.7 mm) center to center, giving the 4.6 L a 1.67:1 rod to stroke ratio.



What is stock 460 bore?


The stock displacement on the 460 came courtesy of a 4.36-inch bore combined with a 3.85-inch stroke. Though the big-bore combination suggested a candidate for high-rpm use (even more so for the smaller 429 with the 3.59 stroke), the 460 was primarily used by Ford for low-rpm towing and heavy hauling applications.



Is a bigger bore and stroke better?


A bigger bore with a shorter stroke also allows an engine to rev higher, which creates more horsepower. Conversely, a long stroke is generally better for fuel efficiency, because it reduces surface area during combustion.



What is the life expectancy of a 4.6 L Ford V8?


Apparently about 26 years or 300,000 miles.



What are the most common problems in a 4.6 Ford engine?


We'll also cover how to avoid the issues and what to look for when shopping for a vehicle with this engine.

  • The Most Common Problems With Ford 4.6L Engines:
  • Intake Manifold Failure.
  • Timing Chain Guide Failure.
  • Spark Plug Failure.
  • Oil Pressure Drop.
  • Product Speedbumps.
  • Avoiding 4.6 Engine Problems.



Is the Ford 4.6 and 5.4 the same block?


All 4.6L and 5.4L SOHC Modular engines employ the same basic blocks, meaning you can bolt any SOHC 3V head on any Romeo or Windsor block, which gives you a lot to choose from.


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.