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What is the difference between a 605 and 800 steering box?


When it comes to steering systems, the 605 and 800 steering boxes are two commonly discussed options, especially among car enthusiasts and those restoring classic vehicles. While both serve the same fundamental purpose—translating the driver’s input into the movement of the wheels—they differ in design, application, and performance. Understanding these differences can help you make an informed decision when upgrading or replacing your steering box.


Design and Construction


The 605 and 800 steering boxes differ significantly in their internal design and construction, which impacts their durability and performance.



  • 605 Steering Box: The 605 is a lighter-duty steering box, often found in smaller or less performance-oriented vehicles. It uses a recirculating ball mechanism but is generally smaller and less robust than the 800.

  • 800 Steering Box: The 800 is a heavy-duty steering box designed for larger vehicles or those requiring more precise steering control. It features a more robust construction, making it suitable for trucks, SUVs, and performance cars.


Applications


The intended use of your vehicle plays a significant role in determining whether a 605 or 800 steering box is the better choice.



  • 605 Steering Box: This box is typically used in passenger cars and smaller vehicles where the demands on the steering system are not as high. It is a popular choice for classic car restorations where maintaining the original specifications is important.

  • 800 Steering Box: The 800 is commonly found in larger vehicles, such as trucks and SUVs, or in performance applications where precise steering and durability are critical. It is also a popular upgrade for those looking to improve the handling of their classic cars.


Performance and Durability


Performance and durability are key factors to consider when choosing between these two steering boxes.



  • 605 Steering Box: While adequate for standard driving conditions, the 605 may not perform as well under heavy loads or in high-performance scenarios. Its smaller size and lighter construction can lead to quicker wear and tear.

  • 800 Steering Box: The 800 offers superior performance and durability, making it ideal for demanding driving conditions. Its robust design ensures it can handle higher loads and provide more precise steering feedback.


Which One Should You Choose?


The choice between a 605 and 800 steering box ultimately depends on your vehicle and driving needs:



  • If you are restoring a classic car and want to maintain its original specifications, the 605 may be the better option.

  • If you need a steering box for a larger vehicle, a performance car, or simply want improved durability and precision, the 800 is the superior choice.


At Kevin's Autos, we have years of experience helping customers choose the right parts for their vehicles. If you’re unsure which steering box is right for you, feel free to reach out to us for expert advice. We’re here to ensure your vehicle performs at its best!


Frequently Asked Questions

What are the three types of steering boxes?


The types of steering gear boxes are Cam and roller, recirculating ball, rack and pinio...



What are the two types of steering systems?


There are two types of power steering systems: hydraulic and electric/electronic. A hydraulic-electric hybrid system is also possible. A Hydraulic Power Steering (HPS) uses hydraulic pressure supplied by an engine-driven pump to assist the motion of turning the steering wheel.



What is the difference between 605 and 800 steering box?


The 605 box is your basic econo 50,000 mile throwaway unit and should never be considered for any performance application, let alone most stock uses. The 800 and 808 boxes are the heavy-duty units used in nearly all big-car and/or high-perf applications.



What are the signs of a steering box going out?


You feel excessive play in steering wheel
If your steering wheel feels sloppy, like you can move it back and forth a bit without changing your direction of travel, there is a problem with a steering system component.



What is the spline count on a Saginaw steering box?


On Saginaw boxes, there are 2 options: 13/16 36 spline, which was pre-1980. 3/4 30 spline, which was after 1980.



Is recirculating ball steering better than rack and pinion?


If you are looking for a steering system that is simple, efficient, and responsive, you might prefer rack-and-pinion steering. If you are looking for a steering system that is durable, adjustable, and compatible, you might prefer recirculating-ball steering.



How do you identify a Saginaw 800 steering box?


Saginaw 800/808 Gearbox Identification
The 800 has a 70mm piston and the 808 has an 80mm piston. This is easy to measure from the outside of the gearbox. If you measure the end cap, the 800 is roughly 3" and the 808 is just under 3.5". It came in both a 3-hole "L" and 4-hole "H" mounting pattern.



Which steering type is best?


While electric steering systems can result in reduced emissions and better fuel economy, hydraulic steering provides a more authentic driving feel. It. 8s also essential to consider the impact on car insurance.



Which steering system is best?


Advantages of Electronic Power Steering
Efficiency: EPS systems are generally more efficient than hydraulic systems, as they do not require hydraulic fluid or pumps. This results in lower weight and reduced energy consumption.



What is the most common steering box?


Rack and Pinion Steering System
Rack and Pinion Steering System
This is the most common type of steering system used in modern vehicles. The system consists of a gear-like mechanism, known as the rack and pinion, that connects the steering wheel to the wheels. The steering wheel rotates, which in turn moves the pinion gear.


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.