The EH Holden is one of Australia’s most iconic classic cars. Introduced in 1963, it brought the new Red Motor engine to the Holden range and quickly became a sales success. While the EH remains a fantastic car to drive today, its suspension system is now more than sixty years old, and even the best-preserved examples are likely to suffer from wear-related issues.
When new, the EH offered a comfortable ride and predictable handling that suited Australian roads perfectly. However, decades of use, ageing rubber components, worn shock absorbers and neglected maintenance can transform a smooth-driving Holden into a vehicle that feels vague, unstable or uncomfortable.
Understanding the EH Holden Suspension System
The EH featured a relatively simple but effective suspension design.
Front Suspension
- Independent front suspension
- Upper and lower control arms
- Coil springs
- Hydraulic shock absorbers
- Ball joints
- Rubber suspension bushes
Rear Suspension
- Live rear axle
- Semi-elliptic leaf springs
- Hydraulic shock absorbers
While robust, every component eventually wears.
Worn Suspension Bushes
Suspension bushes are one of the most common wear items on any EH Holden.
Symptoms
- Clunks over bumps
- Steering wander
- Uneven tyre wear
- Vague handling
- Excessive body movement
Why It Happens
Original rubber bushes deteriorate over time due to:
- Age
- Heat
- Oil contamination
- UV exposure
Even low-kilometre cars often have perished bushes simply due to age.
Best Suspension Bush Upgrade
Recommended Product: Nolathane Suspension Bush Kit
Benefits
- Improved handling
- Longer lifespan
- Reduced suspension movement
- Better steering response
Best For
- Restorations
- Weekend cruisers
- Mild performance upgrades
Nolathane remains one of the most popular upgrades for classic Holdens.
Worn Shock Absorbers
Shock absorbers play a critical role in controlling suspension movement.
Symptoms
- Excessive bouncing
- Nose-diving under braking
- Poor cornering stability
- Harsh ride quality
- Floating sensation at highway speeds
Common Causes
- Internal seal wear
- Fluid leakage
- Age-related deterioration
Many EH Holdens still wear shock absorbers that are decades old.
Best Shock Absorber Upgrade
Recommended Product: KYB Excel-G Shock Absorbers
Benefits
- Improved ride control
- Enhanced comfort
- Reliable performance
- Excellent value
Best For
- Original restorations
- Daily drivers
- Touring vehicles
Fresh shock absorbers often deliver the most noticeable suspension improvement.
Sagging Coil Springs
Front coil springs gradually lose tension over time.
Symptoms
- Front end sitting low
- Uneven ride height
- Poor suspension travel
- Increased bottoming out
Why It Happens
Decades of supporting vehicle weight eventually weakens spring tension.
Sagging springs can significantly affect handling and appearance.
Rear Leaf Spring Problems
The rear leaf springs are another common source of issues.
Symptoms
- Rear end sagging
- Vehicle leaning to one side
- Harsh ride quality
- Axle tramp under acceleration
Common Causes
- Spring fatigue
- Broken leaves
- Worn spring bushes
Many original leaf springs are now well beyond their intended service life.
Best Rear Spring Upgrade
Recommended Product: Heavy Duty Leaf Spring Pack
Benefits
- Restores ride height
- Improves load carrying ability
- Better handling
- Improved ride quality
Best For
- Restored vehicles
- Touring Holdens
- Vehicles carrying passengers regularly
Ball Joint Wear
Ball joints are critical suspension components that wear gradually.
Symptoms
- Steering looseness
- Clunking noises
- Uneven tyre wear
- Poor alignment
Why It Happens
The internal bearing surfaces wear over time.
Worn ball joints can eventually become a safety issue if neglected.
Best Ball Joint Replacement Kit
Recommended Product: Rare Spares Ball Joint Kit
Benefits
- Direct fitment
- Improved steering precision
- Reliable construction
Best For
- Suspension rebuilds
- Safety inspections
- Restorations
Steering Wander
Many owners describe older EH Holdens as “wandering” on the road.
Symptoms
- Constant steering correction
- Poor highway stability
- Vehicle follows road imperfections
Common Causes
- Worn bushes
- Ball joint wear
- Steering box wear
- Incorrect wheel alignment
Steering wander is usually caused by multiple small issues rather than one major fault.
Uneven Tyre Wear
Tyres often reveal suspension problems before the driver notices them.
Common Wear Patterns
- Inside edge wear
- Outside edge wear
- Feathering
- Cupping
Causes
- Worn suspension components
- Alignment issues
- Weak shock absorbers
Regular tyre inspections can identify suspension problems early.
Front End Noise
EH front suspensions commonly develop noises over time.
Symptoms
- Knocking sounds
- Clunks over bumps
- Squeaks during steering
Common Causes
- Bush wear
- Ball joints
- Shock absorber mounts
- Spring movement
A comprehensive inspection is usually required to locate the exact source.
Best Lubricant for Suspension Components
Recommended Product: CRC Heavy Duty Silicone Spray
Benefits
- Lubricates rubber components
- Reduces squeaks
- Water resistant
- Safe on bushes
Best For
- Maintenance
- Inspection work
- Preventative care
Should You Upgrade to Power Steering?
Many EH owners consider steering upgrades during suspension restoration.
Benefits
- Easier low-speed manoeuvring
- Reduced driver fatigue
- Improved usability
Considerations
- Cost
- Originality concerns
- Installation complexity
For many enthusiasts, rebuilding the factory steering system provides excellent results.
Common Suspension Restoration Mistakes
Replacing Only One Component
Suspension parts wear together.
Replacing only one item often leaves other problems unresolved.
Ignoring Alignment
Any major suspension work should be followed by a professional wheel alignment.
Using Cheap Components
Suspension quality directly affects safety and drivability.
Forgetting Rear Suspension
Many owners focus exclusively on the front end.
The rear suspension is equally important.
The EH Holden’s suspension system was exceptionally capable for its era, but sixty-plus years of service inevitably take their toll. Worn bushes, tired shock absorbers, sagging springs and ageing ball joints are all common problems that can dramatically affect ride quality, handling and safety.
The good news is that most EH suspension issues are straightforward to repair, and modern replacement components often improve the driving experience while retaining the car’s original character. Upgrades such as Nolathane bush kits, KYB shock absorbers and quality replacement springs can transform the way an EH Holden feels on the road.
Whether you’re restoring a concours-quality sedan or building a reliable weekend cruiser, investing in the suspension is one of the best ways to improve comfort, confidence and overall enjoyment behind the wheel.
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