HOLMAN-MOODY SK-45823 Nos Nascar Rocker Arm Groove Bushings Bearings

( Brand: Holman-moody ), ( Manufacturer Part Number: SK-45823 ), ( Part Type: Bearing Arm Bushing ), ( Vintage Part: Yes ), ( Country Of Origin: United States )

Review HOLMAN MOODY Nos Fomoco Nascar Rocker Arm Groove Bushings Bearings. fits BOSS 429

The **Holman-Moody SK-45823 NOS Boss 429 NASCAR Rocker Arm Groove Bushings and Bearings** are meticulously crafted, high-performance components designed to restore and enhance the functionality of a classic Ford 429 cubic-inch engine, particularly those built for high-stress applications like NASCAR racing. These bushings and bearings are sourced from authentic, never-before-used (NOS) parts, ensuring they retain the original quality and precision engineered into them during the engine s heyday in the late 1960s and early 1970s. The rocker arm groove bushings are precision-machined to fit snugly within the valve cover, providing a secure and stable platform for the rocker arms while minimizing unwanted play or lateral movement. Constructed from durable, heat-resistant materials, these bushings are designed to withstand the extreme temperatures and pressures generated by high-performance engines, ensuring long-lasting reliability even under the most demanding conditions. The accompanying bearings are similarly engineered to deliver smooth, friction-free operation, allowing the rocker arms to pivot with minimal resistance and maintain optimal valve train efficiency. Whether you're restoring a vintage Boss 429 for street use, drag racing, or competitive classic car events, these NOS components offer a direct connection to the engineering excellence of the era while providing the durability needed to handle modern performance demands. Perfect for enthusiasts seeking both authenticity and performance, the Holman-Moody SK-45823 bushings and bearings are an essential upgrade for any serious 429 engine build, ensuring a seamless valve train operation that honors the legacy of Ford s legendary NASCAR powerhouse.

### **Pros and Cons of Buying Holman-Moody SK-45823 NOS Boss 429 NASCAR Rocker Arm Groove Bushings/Bearings**

1. **High-Quality, Original Equipment Replacement (OER) Parts** These bushings and bearings are designed as direct replacements for the original components found in the Boss 429 NASCAR engine, ensuring proper fitment and performance.

2. **Durability and Performance** Holman-Moody is a well-respected manufacturer in the high-performance and restoration market. Their parts are built to withstand heavy loads and prolonged use, making them suitable for both street and track applications.

3. **Compatibility with Aftermarket Modifications** Since these parts are designed for the Boss 429 NASCAR engine, they are likely to work well with common aftermarket upgrades, such as forged internals, high-performance camshafts, and other performance-oriented components.

4. **Reduced Wear and Improved Reliability** Worn or failing rocker arm bushings and bearings can lead to excessive noise, oil leakage, and potential engine damage. Replacing them with NOS (New Old Stock) parts helps maintain proper valve train function and prevents premature failure.

5. **Restoration and Preservation Value** If you are restoring a Boss 429 NASCAR engine to original or near-original condition, using NOS parts adds authenticity and increases the car s value, especially for collectors and enthusiasts.

6. **Ease of Installation** Being direct replacements, these parts should install similarly to the original components, reducing the complexity of the job compared to aftermarket alternatives that may require additional machining or modifications.

7. **Support for Classic and Muscle Car Communities** Holman-Moody has a strong reputation in the classic car and muscle car restoration scene. Using their parts can provide peace of mind knowing you re getting a product trusted by many in the community.

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1. **Cost** NOS parts are typically more expensive than aftermarket alternatives. While they offer high quality, the price may be prohibitive for budget-conscious builders or those who prioritize cost savings over authenticity.

2. **Limited Availability and Lead Times** NOS parts, especially those that are rare or discontinued, may not always be in stock. This could result in longer wait times for delivery, potentially delaying your project.

3. **Potential for Counterfeit or Mismatched Parts** Since NOS parts are often sourced from salvage yards or private collections, there is a risk of receiving counterfeit or mismatched components. It s crucial to purchase from a reputable dealer to avoid this issue.

4. **Maintenance and Replacement Frequency** While these parts are durable, they are not indestructible. In high-performance applications, they may still require periodic replacement, adding to long-term maintenance costs.

5. **Overkill for Mild Applications** If you are running a stock or mildly modified Boss 429 engine, the performance gains from NOS bushings and bearings may be minimal. In such cases, aftermarket alternatives might offer a better cost-to-performance ratio.

6. **Potential for Overbuilding** If the rest of the engine is not upgraded to match the performance capabilities of these parts, you might be overbuilding certain components, leading to unnecessary wear or failure in other areas (e.g., weak springs, lifters, or valve guides).

7. **Environmental and Ethical Concerns** NOS parts are often sourced from dismantled engines, which raises ethical questions about the origin of the parts. Some buyers may prefer aftermarket or new parts for environmental or moral reasons.

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Holman-Moody SK-45823 NOS Boss 429 NASCAR rocker arm groove bushings and bearings are an excellent choice for enthusiasts who prioritize authenticity, durability, and high performance in their restoration or modification projects. They offer the advantage of being direct replacements for original components, ensuring proper fitment and reliability. However, the higher cost, potential availability issues, and the risk of counterfeit parts are drawbacks that must be carefully considered.

For those restoring a Boss 429 NASCAR engine to original specifications or building a high-performance version of the engine, these parts are a strong recommendation. On the other hand, if budget or project requirements lean toward aftermarket alternatives or new parts, it may be worth exploring other options that balance cost and performance.

- **Buy these parts if:** You are restoring a Boss 429 NASCAR engine to original condition, prioritize authenticity, and are willing to invest in high-quality components. You also plan to run the engine in a performance-oriented capacity where durability is critical.

- **Consider alternatives if:** You are on a tight budget, running a stock or mildly modified engine, or prefer new aftermarket parts that may offer better value or performance for your specific application. Always purchase from a trusted dealer to ensure authenticity and quality.

Details:

Rare NOS parts - H/M .708 racing shaft size. Great original spares for your tool chest. NOS FoMoCo bronze grooved clasp lock bearings. 8 pieces only.

Read carefully: Application Boss 429 NASCAR engine ONLY. Steve's a REAL HM pack-rat. Its all in there. Thru Holman-Moody.

View last photo. View first four photos. Shown for display purposes only. Holman-Moody NASCAR FoMoCo rocker arm bushings.

As originally supplied by Ford Motor Co. The tolerance difference between Genuine NOS to good used. Sorry H/M box, caliper, shafts stands, patch NOT included. Going into a high-rev NASCAR race engine.

Rare H/M close-out catalog is NOT included. H/M SK-45823. Excellent NOS Ford unused condition.

part #: sk45823 prices

• $199.00-$369.00

specifications cylinderheapar:

• for models: 429, Boss
• brand: Holman-moody
• mpn: Sk-45823
• part type: Bearing Arm Bushing
• vintage part: Yes
• country of origin: United States

general cylinderheapar:

• Car Truck Parts Accessories > Engines Engine Parts > Cylinder Heads
• condition: For parts or not working

seller cylinderheapar:

• # reviews: 660
• city: Las Vegas, Nevada
• rating: 97.8%

shipping cylinderheapar:

• cost: $16.95
• transit: 97-148 Days
• carrier: USPS
• service: USPS Priority Mail
• type: Fixed
• class: Expedited

returns cylinderheapar:

• policy: No Returns

offer cylinderheapar:

• sold: 0
• options: Ship-to-home
• availability: In Stock
• started: March 17, 2026
• quantity: 2

payments cylinderheapar:

• other
• wallet: Google-pay
• credit card: Discover

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