Automatic Transmission Mount Guide for 1961-1965 Buick Skylark
Eliminate drivetrain clunks and excessive vibrations by replacing your Skylark's old, worn-out transmission mount.
- A new aftermarket mount is the only reliable option for this vehicle, as OEM parts are unavailable and used parts are too old.
- The available Lakewood mount is likely a polyurethane upgrade, offering durability at the cost of potentially increased cabin vibration.
- Symptoms almost always include a 'clunk' when shifting into gear and new vibrations at idle or during acceleration.
- Always inspect your engine mounts when replacing the transmission mount, as they wear out together.
Symptoms of a Failing Transmission Mount
After six decades, the original rubber on your Skylark's transmission mount is likely worn out, hardened, or completely separated. When the mount fails, it can no longer do its job of securing the transmission. Look for these common signs of a bad mount:
- Clunking Noises: A distinct "clunk" or "thump" when you shift from Park into Drive or Reverse is a classic symptom. This sound is the transmission physically moving and hitting against the frame because the mount is no longer holding it securely.
- Excessive Vibration: You may feel a new or increased vibration in the floor or seats, especially when the car is idling in gear or during acceleration. This happens because the failed mount is transferring the drivetrain's vibrations directly into the car's body instead of absorbing them.
- Rough Shifting: While a bad mount doesn't cause internal transmission slipping, the excessive movement can sometimes affect shift linkage on older vehicles, leading to a rough or jerky feel when gears change.
Pro-Tip: Check Your Engine Mounts Too
The transmission mount and engine mounts work together as a system. If the transmission mount has failed, there's a very high probability your engine mounts are also worn out. Replacing them all at the same time is highly recommended to properly secure the entire drivetrain and prevent the new mount from failing prematurely due to extra stress.
Choosing the Right Aftermarket Mount
For a classic car like the 1961-1965 Skylark, finding a new original equipment (OEM) part from GM is not a realistic option. Likewise, a used original mount would be just as old and degraded as the one you're replacing. Therefore, a new aftermarket part is the only practical and reliable choice.
Lakewood: Lakewood is a well-known brand in the performance automotive space. Their transmission mounts are often made from polyurethane instead of the original's softer rubber.
- Pros: Polyurethane is much more durable than rubber and will resist oil and wear for a longer service life. It provides a much firmer connection, which can improve throttle response by reducing drivetrain flex during acceleration.
- Cons: The main trade-off is a potential increase in Noise, Vibration, and Harshness (NVH). Because polyurethane is stiffer, it may transmit more minor vibrations into the cabin than the original soft rubber mount did. For a classic cruiser, this may be a noticeable change in ride feel.
| Part Type | Estimated Cost |
|---|---|
| New OEM | Not Available |
| New Aftermarket (Lakewood) | $40 - $100 |
| Used OEM | Not Recommended |
| Shop Labor | $100 - $250 |
Frequently Asked Questions (FAQ)
Are there any recalls for the 1961-1965 Skylark transmission mount?
No, there are no specific recalls issued by the National Highway Traffic Safety Administration (NHTSA) for the transmission mount on the 1961-1965 Buick Skylark. While GM did have a major recall for engine mounts on many 1965-1970 models, this specific part and vehicle range were not included.
Can I replace the transmission mount myself?
Yes, this is a DIY-feasible job for someone with basic mechanical tools and safety knowledge. The process involves safely supporting the transmission with a jack and a block of wood, unbolting the crossmember, removing the old mount, and installing the new one. Always use jack stands to secure the vehicle before working underneath it. The entire job typically takes 1-2 hours.
What is the difference between a rubber and a polyurethane mount?
Original mounts were made of soft rubber to prioritize a smooth, vibration-free ride. Aftermarket performance mounts, like those from Lakewood, often use polyurethane, a much stiffer material. Polyurethane offers superior durability and less drivetrain movement, but may transmit more vibrations into the car's cabin.
Will a bad transmission mount cause my transmission to slip?
It is highly unlikely. A bad mount does not affect the internal hydraulic functions of the transmission that cause slipping. However, in severe cases, the physical movement could potentially interfere with external shift linkages on older vehicles, causing poor shift quality.
Technical Specifications
OEM Part Numbers: 1353473 1361633
The mount consists of a metal frame with a vulcanized rubber or polyurethane insulator designed to bolt to the transmission tail housing and the vehicle's crossmember.
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.