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  3. CADILLAC 5474560

CADILLAC 5474560 Nos Engine Connecting Rod Bearing General Cadillac/oldsmobile BEARING/1

fits make: Cadillac, Oldsmobile. year: 1968–1984.

5474560 General Motors 1968-1984 Cadillac/oldsmobile Nos Engine Connecting Rod Bearing/1

( Brand: Cadillac ), ( Manufacturer Part Number: 5474560 ), ( Type: Connecting Rod Bearing ), ( Items Included: Bearing ), ( Material: Aluminum Alloy ), ( Vintage Part: Yes ), ( Finish: Nos ), ( Manufacturer Warranty: No ), ( California Prop 65 Warning: Warning, Servicing And Maintaining A Passenger Vehicle Or Off-highway Motor Vehicle Can Expose You To Chemicals Including Engine Exhaust, Carbon Monoxide, Phthalates, And Lead, Which Are Known To The State Of California To Cause Cancer And Birth Defects Or Other Reproductive Harm. To Minimize Exposure, Avoid Breathing Exhaust, Do Not Idle The Engine Except As Necessary, Service Your Vehicle In A Well-ventilated Area And Wear Gloves Or Wash Your Hands Frequently When Servicing Your Vehicle. For More Information Go To Www.p65warnings.ca.gov/passenger-vehicle. ), ( Color: Slver ), ( Country Of Origin: United States ), ( Item: Tracy Corvette 2360 )

Review CADILLAC General Motors Cadillac/oldsmobile Nos Engine Connecting Rod Bearing/1 fits 1968–1984

The **1968 1984 Cadillac/Oldsmobile NOS (No-Spin) Engine Connecting Rod Bearing (Part #5474560)** represents a critical and meticulously engineered component designed to ensure the longevity, performance, and reliability of the iconic big-block V8 engines found in these legendary American muscle and luxury vehicles. This bearing is a precision-machined, high-quality cast-iron or steel-backed shell, engineered to withstand the immense stress, heat, and cyclic loading inherent in high-performance and high-torque applications. Originally specified for use in the **350-cubic-inch, 400-cubic-inch, 455-cubic-inch, and 500-cubic-inch V8 engines** produced by General Motors during this era, this bearing is part of the **No-Spin (NS) series**, which features a unique design to prevent rotational movement within the rod bore, thereby reducing wear and extending the life of both the bearing and the connecting rod itself. The **No-Spin** designation is particularly significant, as it incorporates a small, strategically placed tab or protrusion on the bearing shell that interlocks with the rod s bore, creating a secure, non-rotating fit that minimizes friction and the risk of catastrophic failure due to bearing spin a common issue in high-revving or heavily modified engines.

Constructed from **high-grade cast iron** with a **phosphor-bronze or lead-bronze overlay** on the bearing surface, this component is designed to handle the extreme pressures and temperatures generated by these powerful engines, even under conditions of aggressive driving, forced induction, or high-performance modifications. The **steel-backed construction** provides added strength and dimensional stability, ensuring that the bearing maintains its integrity under heavy loads while resisting deformation over time. The **interchangeability** of this bearing across multiple GM big-block applications including those found in Cadillacs (such as the Eldorado, Seville, and Fleetwood), Oldsmobiles (like the 442, Cutlass Supreme, and Starfire), and even some Pontiac and Buick models makes it a versatile and highly sought-after part for restorers, performance enthusiasts, and mechanics working on classic American muscle cars. Whether installed in a **stock engine** for a faithful restoration or in a **highly modified, nitrous-injected, or turbocharged** powerplant, this bearing delivers the durability and reliability expected from a **GM NOS specification part**.

Beyond its mechanical function, the **5474560 bearing** holds historical significance as part of GM s **No-Spin technology**, a refinement introduced to address the limitations of earlier bearing designs that often suffered from spin-induced wear. This innovation was particularly crucial for engines operating at higher RPMs or under extreme loads, where bearing spin could lead to catastrophic rod failure a scenario that would have been catastrophic in both performance and safety terms. The **tight tolerances** and **precision engineering** of this bearing ensure a snug fit within the connecting rod s bore, reducing the risk of oil starvation, excessive heat buildup, and premature wear. For collectors and enthusiasts working on **high-mileage engines** or those undergoing **major overhauls**, this bearing is often recommended as an upgrade over standard aftermarket options, as it aligns with the original equipment manufacturer s (OEM) specifications, ensuring compatibility with other NOS components like pistons, crankshafts, and oil pumps.

When selecting this bearing for an engine rebuild or upgrade, attention to detail is paramount. The **bearing s size and fit** must correspond exactly to the **connecting rod bore diameter** of the specific engine application, with common sizes ranging from **1.750" to 2.000"** depending on the displacement and model year. The **oil clearance** the gap between the bearing shell and the connecting rod journal must also be carefully measured and maintained within GM s recommended specifications, typically around **0.002" to 0.003"** for proper lubrication and cooling. Installing these bearings requires **cleanliness and precision**, as any contamination or improper seating can lead to premature failure. Many mechanics and restorers opt to **recondition or replace the entire rod bearing set** during an overhaul, as the rods themselves may exhibit wear over time, and replacing both the rods and bearings ensures a fresh, reliable assembly.

For those seeking the **highest level of authenticity** in their restoration project, the **5474560 NOS bearing** is an ideal choice, as it replicates the exact specifications of the original parts used in factory-built engines. This makes it a preferred option for **showroom-quality restorations**, where every component must meet or exceed the standards of the original build. Additionally, the **longevity and performance benefits** of NOS bearings make them a favorite among **drag racing, street rod, and high-performance applications**, where reliability is non-negotiable. Whether paired with **stock pistons, forged components, or aftermarket upgrades**, this bearing ensures that the engine operates with the same level of precision and durability as it did when it left the GM assembly line decades ago.

In summary, the **1968 1984 Cadillac/Oldsmobile NOS Engine Connecting Rod Bearing (Part #5474560)** is more than just a mechanical component it is a testament to GM s engineering prowess during an era of American automotive excellence. With its **No-Spin design, high-quality materials, and exacting tolerances**, this bearing is essential for maintaining the integrity of one of the most revered engine families in automotive history. Whether used in a **restored classic, a high-performance street machine, or a competition-ready powerplant**, it provides the reliability, strength, and performance that enthusiasts demand from their big-block V8s.

### **Pros and Cons of Buying a 1968 1984 Cadillac/Oldsmobile with a NOS Engine and Connecting Rod Bearing Issue**

#### **Pros**

1. **High-Performance Potential** NOS (New Old Stock) engines, particularly from this era, are known for their strong, naturally aspirated powerplants. Many of these engines (such as the Cadillac V8s, Oldsmobile 455/400/350, or the famous "Tri-Power" V8s) were designed for serious performance, making them desirable for restoration or hot rod builds.

2. **Classic American Muscle Appeal** Vehicles from this era (especially Cadillacs and Oldsmobiles) are iconic in the muscle car and luxury classic car communities. A NOS engine adds to the authenticity and value of a well-preserved example.

3. **Parts Availability** While not as abundant as modern parts, NOS engines from this period still have a decent aftermarket support system. Blueprints, gaskets, seals, and even some rebuilt components can still be sourced from specialty suppliers.

4. **Potential for Restoration Value** If the vehicle is otherwise in good condition (chassis, body, interior), a NOS engine with proper care could become a highly sought-after project or show car. Some of these engines, when restored correctly, can achieve premium prices at auctions.

5. **Nostalgia and Collectibility** For enthusiasts who appreciate the golden age of American automotive engineering, owning a NOS engine from this era carries sentimental value. Some models (like the 1970 1972 Cadillac 429 or the 1970 1977 Oldsmobile 455) are particularly coveted.

6. **Modularity for Performance Upgrades** Many of these engines can be modified with modern components (e.g., high-flow heads, performance camshafts, or even forced induction) to significantly increase power, making them viable for street or track use.

---

#### **Cons**

1. **Connecting Rod Bearing Issue is a Major Concern** A failing connecting rod bearing is a critical failure that can lead to catastrophic engine damage (rod knock, piston damage, or even a blown engine). This is not a minor repair it requires disassembly, inspection, and potential replacement of bearings, rods, and possibly other internal components.

2. **High Repair Costs** Rebuilding or replacing connecting rod bearings is labor-intensive and expensive. Depending on the engine s condition, you may need to:

- Remove and inspect all rods and bearings.

- Replace worn bearings (or even rods if they are damaged).

- Rebuild the crankshaft (if necessary).

- Replace seals, gaskets, and other internal components.

- Rebalance the engine for proper performance.

The cost can easily exceed **$3,000 $8,000 **, depending on labor rates and parts availability.

3. **Engine Condition Unknown** Simply having a NOS engine does not guarantee it is in good shape. Many of these engines were used in high-performance applications (drag racing, street rods) and may have hidden issues like:

- Worn camshafts or lifters.

- Leaking head gaskets or oil pans.

- Cracked cylinder heads or blocks.

- Poorly maintained fuel systems (carburetors, distributors, or ignition components).

A thorough inspection (or even a rebuild) is often necessary before assuming the engine is reliable.

4. **Reliability Risks** Even if the bearings are replaced, these older engines are not as refined as modern powerplants. Common issues include:

- Oil leaks (valve cover, oil pan, rear main seal).

- Cooling system failures (thermostat, water pump, radiator).

- Electrical gremlins (distributor, ignition, gauges).

- Transmission or drivetrain wear (especially in high-mileage examples).

5. **Fuel and Emissions Challenges** Many of these vehicles were not built for modern fuel standards. Running them on today s lower-octane gasoline can cause detonation, while emissions systems (if present) may require modifications to pass inspections.

6. **Depreciation Risk** Classic cars, even with NOS engines, can lose value if not properly maintained. If the vehicle is not restored to showroom condition or lacks documentation (service records, originality), its resale value may not justify the investment.

7. **Time and Effort Required** Restoring or even just keeping one of these engines running requires significant mechanical skill. Many enthusiasts underestimate the time needed for maintenance, tuning, and troubleshooting.

---

### **Conclusion**

Buying a 1968 1984 Cadillac or Oldsmobile with a NOS engine and a connecting rod bearing issue can be a rewarding project for the right buyer particularly if you are an experienced mechanic, have a passion for classic cars, and are prepared for the challenges. The potential for a restored, high-performance machine is real, but the risks (financial, mechanical, and time-consuming) are substantial.

If you are **not** a hands-on enthusiast or cannot afford the potential repair costs, this purchase may not be worth the risk. However, if you are **willing to invest time and money into a thorough rebuild, restoration, or performance project**, a NOS engine from this era could be an exciting and valuable addition to your collection.

### **Recommendation**

1. **Get a Professional Inspection** Before purchasing, have a trusted mechanic perform a **full engine teardown and inspection** to assess the extent of the bearing damage and overall condition. This will give you a clear picture of what repairs are needed and their cost.

2. **Budget for a Full Rebuild** If the engine is beyond minor repairs, factor in **$5,000 $10,000 ** for a complete overhaul, including new bearings, rods (if needed), seals, gaskets, and labor.

3. **Consider Alternative Engines** If the NOS engine is too risky, explore other options:

- A **rebuilt engine** from a reputable shop (often more reliable than a NOS unit).

- A **modern crate engine** (e.g., LS-based or small-block Ford) for better reliability and fuel economy.

- A **less expensive classic engine** (e.g., a 350 Chevy or 302 Ford) if the Cadillac/Oldsmobile is primarily for nostalgia.

4. **Prioritize the Rest of the Vehicle** Ensure the chassis, suspension, transmission, and body are in decent shape before committing to an engine rebuild. A beautiful car with a junk engine is not a good investment.

5. **Buy with a Plan** Decide whether you want this vehicle for:

- **Daily driving** (unlikely with a NOS engine unless heavily modified).

- **Restoration and show** (requires patience and funding).

- **Performance project** (if you re willing to modify and maintain it aggressively).

Only proceed if you have a clear, realistic plan for the vehicle s future.

**Final Verdict:** If you are **mechanically capable, financially prepared, and passionate about classic American muscle**, a NOS engine from this era can be a fantastic project. If not, consider a more reliable alternative to avoid costly surprises. Always **inspect thoroughly, budget conservatively, and proceed with caution.**

Details:

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part #: 5474560 price

  • $11.04

specifications pistonrinro:

  • for makes: Cadillac, Oldsmobile
  • for years: 1968-1984
  • brand: Cadillac
  • mpn: 5474560
  • type: Connecting Rod Bearing
  • items included: Bearing
  • material: Aluminum Alloy
  • vintage part: Yes
  • finish: Nos
  • manufacturer warranty: No
  • california prop 65 warning: Warning, Servicing And Maintaining A Passenger Vehicle Or Off-highway Motor Vehicle Can Expose You To Chemicals Including Engine Exhaust, Carbon Monoxide, Phthalates, And Lead, Which Are Known To The State Of California To Cause Cancer And Birth Defects Or Other Reproductive Harm. To Minimize Exposure, Avoid Breathing Exhaust, Do Not Idle The Engine Except As Necessary, Service Your Vehicle In A Well-ventilated Area And Wear Gloves Or Wash Your Hands Frequently When Servicing Your Vehicle. For More Information Go To Www.p65warnings.ca.gov/passenger-vehicle.
  • color: Slver
  • country of origin: United States
  • item: Tracy Corvette 2360

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  • # reviews: 21905
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general pistonrinro:

  • Car Truck Parts Accessories > Engines Engine Parts > Connecting Rods Parts
  • condition: New other see details

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  • quantity: 2
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  • started: March 15, 2026

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for makes: cadillac, oldsmobile, for years: 1968-1984, type: connecting rod bearing, items included: bearing, vintage part: yes, finish: nos, manufacturer warranty: no, california prop 65 warning: warning, servicing and maintaining a passenger vehicle or off-highway motor vehicle can expose you to chemicals including engine exhaust, carbon monoxide, phthalates, and lead, which are known to the state of california to cause cancer and birth defects or other reproductive harm. to minimize exposure, avoid breathing exhaust, do not idle the engine except as necessary, service your vehicle in a well-ventilated area and wear gloves or wash your hands frequently when servicing your vehicle. for more information go to www.p65warnings.ca.gov/passenger-vehicle., country of origin: united states, item: tracy corvette 2360,
category: auto parts > car truck parts accessories > engines engine parts > connecting rods parts, color: slver, material: aluminum alloy, sku: 12767470558730773,
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