What is the Weight of a Ford 351W Engine: A Comprehensive Overview

A 351W engine typically weighs approximately 500-550 pounds.

How Much Does A 351W Weigh

A 351W engine is a classic Ford V8 engine originally used in many popular performance cars like the Mustang and Bronco. Weighing in at over 500 pounds (228.6 kg) dry, the 351W is a big block motor designed for Muscle cars and large vehicles. It has a bigger displacement than other engines, which contributes to its heavier weight, as well as its impressive performance capabilities. While some engines can get very small and lightweight due to modern technology, the 351W retains its classic large block architecture, giving it great power but at the cost of additional weight. Its heavy weight adds to its impressive performance capabilities providing reliable power for available speed and torque on demand. The added weight also requires bigger suspension components like springs, shocks, struts and other aftermarket equipment to give you the control you need while on the road or track.

Engine Block Weight of 351W

The weight of the engine block on a 351W varies depending on the material used. Cast iron blocks are heavier than aluminum blocks, with cast iron ranging from 254 to 319 pounds and aluminum coming in between 135 and 157 pounds.

Different Weights of Flywheels

The type of flywheel used can also affect the overall weight of the engine. Flexplates are lightweight and typically weigh between 8 and 12 pounds. Cast iron flywheels are heavier, ranging from 22 to 28 pounds.

Intake Manifolds

The intake manifold is another component that can affect the engine’s total weight. Single plenum intake manifolds usually weigh between 4 and 10 pounds, while dual plenum intake manifolds range from 8 to 12 pounds.

Alternators and Weight Information

Alternators also vary in weight depending on the model used. Field discharge rate alternators typically weigh between 20 and 30 pounds, while high output alternators range from 30 to 40 pounds.

Exhaust Manifolds and Weight Information

Exhaust manifolds also come in two varieties: cast iron or headers/Tri-Y manifolds. Cast iron exhaust manifolds generally weigh around 15 to 20 pounds, while headers/Tri-Y exhaust manifolds range from 18 to 25 pounds.

Overall, a complete 351W engine with all components installed weighs anywhere from 400 to 500 pounds depending on the model, materials used, and accessories added.

351W Engine Block Weight

The 351W engine block is composed of a cast iron block or aluminum block. The cast iron block is the heavier of the two options, weighing in at around 230 pounds. The aluminum block weighs in at around 180 pounds. Both blocks have their benefits, but for overall weight savings, an aluminum block is the better option.

Flywheel Weight

Flywheels can come in a variety of weights depending on the type and size. A flywheel made of elastic material will weigh less than one made of cast iron, with weights ranging from 10 to 20 pounds. A cast iron flywheel will weigh more, typically between 20 and 30 pounds. The weight of the flywheel can have an impact on engine performance so it’s important to choose one that is right for your specific engine setup.

Oil Pans and Weights

Oil pans come in both steel and aluminum varieties, with each offering its own benefits and drawbacks when it comes to weight. Steel oil pans are heavier than aluminum ones, typically weighing around 11-12 pounds versus 6-7 pounds for an aluminum pan. Steel pans offer increased durability and can handle higher temperatures than aluminum ones, but they are also more prone to rusting over time if not properly maintained. Aluminum pans also offer increased heat dissipation and are lighter weight, making them a better choice for performance-minded drivers.

FAQ & Answers

Q: What is the weight of a 351W engine?
A: A typical 351W engine weighs approximately 500 lbs.

Q: What is the dry weight of a 351W engine?
A: The dry weight of a 351W engine is approximately 460 lbs.

Q: What factors can affect the weight of a 351W engine?
A: Factors such as accessories, optional components, or modifications may affect the total weight of a 351W engine.

Q: Can I lighten my 351W engine if I want to?
A: Yes, you can lighten your 351W engine by removing unnecessary components and parts or by replacing heavier parts with lighter ones. However, it is important to make sure that your modifications do not negatively affect the performance of your engine.

Q: How much does a complete 351W engine weigh?
A: A complete 351W engine will typically weigh somewhere between 500 and 550 lbs., depending on the accessories and optional components included with it.

In conclusion, the weight of a 351W engine can vary depending on the components included. On average, it weighs around 500-550 lbs. It is important to note that the overall weight can be affected by various factors such as the type of intake, oil pan, and water pump used. In addition, certain modifications can add to the total weight of the engine as well.