Ford Granada Differential Bearing Set Guide (1975-1980)
Eliminate rear-end noise and restore your Granada's driveline by choosing the correct differential bearings.
- You must identify your Granada's rear axle type (likely an 8-inch) before ordering parts.
- Symptoms are primarily noise-based: whining, howling, or rumbling from the rear of the car.
- Professional installation is strongly recommended due to the need for specialized tools and procedures.
- Timken is a trusted, high-quality brand for aftermarket differential bearings.
Is Your Granada Making Rear-End Noise?
A failing differential bearing will let you know something is wrong with a distinct set of sounds coming from the back of the car. The most common symptom is a whining or howling noise that changes pitch with your speed. 🎬 Watch this guide to identify common bad differential symptoms. You might also hear a rumbling or whirring sound at speeds over 20 mph, which often points to worn carrier bearings. If the noise changes when you are turning, that's another strong clue. Ignoring these sounds can lead to more severe damage inside the differential.
Don't Ignore the Noise
A failing bearing generates heat and metal particles that contaminate the gear oil. This can quickly destroy the expensive ring and pinion gears, turning a relatively small repair into a major overhaul.
Choosing the Right Aftermarket Bearings
For a vehicle like the 1975-1980 Granada, new original equipment (OEM) Ford parts are generally no longer available. The aftermarket is your primary source for new components. Fortunately, high-quality options are available that meet or exceed the original specifications.
Brand Quality: Timken
Timken is a highly respected brand in the world of automotive and industrial bearings. They are often used as original equipment by many car manufacturers and are considered a top-tier choice for replacement parts. A Timken differential bearing set is a reliable, high-quality option that you can install with confidence. These kits often include all the necessary components for the job, such as bearings, races, seals, and shims.
Crucial Step: Identify Your Rear Axle
The single most important step before ordering parts is to identify which rear axle your Granada has. During this period, Ford used a few different differentials:
- Ford 8-Inch: This was the most common rear end in 1975-1980 Granadas. It is a "dropout" or "third-member" style, meaning the entire gear assembly unbolts from the front of the axle housing. The rear of the housing is smooth and has no cover plate.
- Ford 8.7-Inch or 8.8-Inch Predecessor: Some Granadas were equipped with a less common axle that has a 10-bolt rear cover plate, similar to the later 8.8-inch axle. Parts for this axle are much harder to find.
Check for a metal tag on one of the differential housing bolts or look at the back of the axle housing to see if it has a removable cover. Knowing which one you have is essential to ordering the correct bearing set.
What Does a Differential Bearing Set Replacement Cost?
The cost of the parts is low, but labor is a significant factor because this is a complex job. Professional installation is highly recommended unless you have experience with differential work.
| Part/Service | Estimated Cost |
|---|---|
| New Aftermarket Bearing Set (Timken) | $35 - $39 |
| Shop Labor | $400 - $800 |
| Total Estimated Cost | $435 - $839 |
Frequently Asked Questions (FAQ)
How can I be sure my differential bearings are bad?
The classic signs are whining, howling, or rumbling from the rear of the car that gets louder or changes pitch as you accelerate or decelerate. A whirring noise when decelerating specifically points to pinion bearings. A rumbling noise above 20 mph that changes while turning often indicates bad carrier bearings.
Can I replace the bearings myself?
This is not recommended for beginners. Replacing differential bearings requires special tools like a hydraulic press to remove and install the bearings, and a dial indicator to set the gear backlash 🎬 See the technical process for replacing rear axle bearings. and bearing preload correctly. Incorrect installation will cause rapid failure of the new parts and can damage the gears.
Should I replace all the differential bearings at once?
Yes. It is always best practice to replace the pinion and carrier bearings as a complete set. The labor involved to access them is the same, and if one bearing has failed, the others are likely worn as well. Master rebuild kits include all the necessary bearings and seals for a complete job.
Were there any recalls for the 1975-1980 Granada differential?
Searches of the National Highway Traffic Safety Administration (NHTSA) database did not show any recalls specifically for the differential bearings or axle assembly on the 1975-1980 Ford Granada. Recalls for this model year were related to other issues like seat belts and steering components.
Helpful Videos
![[EN] Rear Axle Differential Bearing Replacement](https://img.youtube.com/vi/hBXKekE0piA/mqdefault.jpg)
Technical Specifications
Vehicle primarily used the Ford 8-inch integral carrier (third member) style differential. Some models may have a Ford 8.7-inch axle with a rear cover plate. Axle identification is required before purchase.
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The information in this article is provided for general reference and educational purposes only. Vehicle specifications, procedures, and part compatibility can vary by production date, trim level, and region. Always consult your vehicle's factory service manual and verify part numbers before purchasing or performing repairs. Safety-critical components such as airbags, seat belts, and braking systems should be installed by a qualified professional.