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Tailshaft and Driveshaft FAQs for Every Car Owner

Got questions when it comes to your car’s critical power transfer system? Well, you’re not alone.

Whether you’re a car enthusiast or simply curious about how these components work, we’ve got you covered here with some FAQs and answers.

A tailshaft, also known as a propeller shaft, is a crucial component of a vehicle’s drivetrain system.

It’s responsible for transmitting power from the transmission to the differential, allowing the wheels to turn. Essentially, it connects the gearbox to the rear axle, enabling smooth power transfer and vehicle movement.

Signs of a malfunctioning tailshaft include unusual vibrations, clunking noises, or difficulty shifting gears. If you notice any of these symptoms, it’s essential to have your tailshaft inspected by a qualified mechanic. 

Regular maintenance, such as greasing the universal joints and checking for balance, can also prevent potential issues.

Absolutely! Performance tailshafts are designed to handle higher torque loads and provide better power delivery, resulting in improved acceleration and overall performance. 

Whether you’re a racing enthusiast or simply want a smoother driving experience, upgrading to a performance tailshaft can make a noticeable difference.

Industrial tailshafts serve a similar purpose to automotive tailshafts but are typically larger and built to withstand heavier loads and harsher operating conditions. They’re commonly used in machinery, equipment, and industrial applications where durability and reliability are paramount.

A driveshaft is a mechanical component that transmits torque from the engine to the wheels, allowing the vehicle to move forward or backward. 

It plays a critical role in the drivetrain system, transferring power from the transmission or gearbox to the differential, which then distributes power to the wheels.

Common signs of a failing driveshaft include vibrations, clunking noises, or a noticeable decrease in acceleration and performance. Additionally, inspecting the driveshaft for any signs of damage, such as cracks or excessive wear, can help identify potential issues early on.

Driveshaft maintenance is also crucial for ensuring optimal performance and preventing premature wear and tear. Regular inspections, lubrication, and balancing can help extend the lifespan of your driveshaft and minimise the risk of costly repairs down the line.

Yes, upgrading to a high-performance driveshaft can improve torque transfer, reduce rotational mass, and enhance overall drivetrain efficiency. 

Whether you’re looking to increase horsepower, reduce drivetrain losses, or enhance acceleration, a performance driveshaft upgrade can make a significant difference.

 

Yes, driveshafts come in various designs, including one-piece, two-piece, and carbon fibre driveshafts. 

Each type has its advantages and limitations, depending on factors such as vehicle application, performance requirements, and budget considerations.

If you have any further questions or need assistance with your tailshaft or driveshaft, reach out to us as GJ Drivelines in Keysborough. 

With years of experience in custom and industrial tailshafts and driveshafts, we are confident we can meet all of your needs. Simply give us a call on 9706 3166 or check us out online, and we’ll be ready to help you out with whatever you need!

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    Identify Transmission

    Chrysler – Dodge
    727 – 30 Spline 1 11/16″ Seal Diameter
    904 – 26 Spline 1 9/16″ Seal Diameter

    Ford
    C6-T56 – 31 Spline 1 11/16″ Seal Diameter
    AOD & C4 & T5 – 28 Spline 1 1/2″ Seal Diameter
    4 R 7OW – 28 Spline 1.598″ Seal Diameter

    General Motors
    T-350 700R4-4LLOE – 27 Spline 1 1/2″ Seal Diameter
    T-400-4L80E – 32 Spline 1 7/8″ Seal Diameter

    Note: Transmission slip yokes are manufactured with various U-Joint Series. It is important to match Horsepower and Torque requirements to U-Joint Series. For aftermarket transmission applications usually a spline count and seal diameter will identify slip yoke required.

    Identify Rear U-Joint

    diagram-d

    If Pinion Yoke has Placement tabs that retain the U-Joint, measure inside tabs. See Diagram D.

    diagram-e

    If Pinion Yoke does not have Placement Tabs that retain U-Joint, measure from flat of yoke inside to inside. See Diagram E.

    diagram-l

    If 4 bolt Flange is used on pinion, measure Pilot Diameter and center to center diagonally bolt hole to bolt hole. See Diagram L.

    diagram-a

    Universal Joint Size. There are hundreds of U-Joint sizes or “Series” to accomodate many different applications of power and desired longevity for your automotive, 4×4 truck or auto racing requirements, these 4 series of joints cover most needs.

    1310 Spicer Series: 1 1/16″ Cup Diameter (Dim C – Diagram A) 3 7/32″ length (Dim B – Diagram A) Certain Ford applications have 2 cups 1 1/8 Diameter. Appropriate horse power range is up to 500 in circle track or road racing, small tire drag racing and 4×4. Also available: Performance Dynamic Cryo Joint.

    1330 Spicer Series: 1 1/16″ Cup Diameter (Dim C – Diagram A) 3 5/8″ length (Dim B – Diagram A) Certain Ford applications have 2 cups 1 1/8 Diameter. Slightly stronger than 1310, Used in 5.0 Mustangs. Also available: Performance Dynamic Cryo Joint.

    3R Saginaw Series: 1 1/8″ Cup Diameter (Dim C – Diagram A) Retained with internal clip 2 5/8″ (Dim B – Diagram A). Most common GM joint. Horse power range up to 700 in road racing and circle track. Solid drag racing U-Joint can accomodate most sportsman classes. Also available: Performance Dynamic Cryo Joint.

    1350 Spicer Series: Manufactured with OEM tolerances and treated with our Cryogenic Process to yeild the strongest U-Joint available. For drag racing applications a solid non-lube design U-Joint is recommended because of the tremendous initial shock load, or short duration of high torque the joint must be able to withstand.

     

    Driveshaft Measurements

    diagram-n

    If PST is supplying you with transmission slip yoke, Pinion yoke and driveshaft yoke measure Dim W. See Diagram N.

    If PST is supplying you with transmission slip yoke and driveshaft measure Dim X. See Diagram N.

    2 Piece driveshafts use Dim Y + Z. See Diagram N.