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  3. CLEVITE 9108859

CLEVITE 9108859 Bearings Rod 1969-UP

9108859 Clevite H-series 1969-up Sbc Main Bearings And Rod

( Brand: Clevite ), ( Manufacturer Part Number: 9108859 ), ( Part Type: Bearing Rod ), ( California Prop 65 Warning: False )

Review CLEVITE H series 1969-up Sbc Main Bearings And Rod

The **Clevite 9108859 H-Series Rod Bearing** is a premium, high-performance aftermarket bearing designed specifically for the rod journals of vintage and modern engines, particularly those built from 1969 and later, including a wide range of muscle cars, performance trucks, and high-output applications. Engineered with a **thin-walled, precision-machined shell** constructed from high-grade **lead-indium alloy**, this bearing delivers exceptional durability, load-bearing capacity, and resistance to wear making it an ideal choice for both stock and heavily modified engines. The **H-Series designation** signifies its enhanced strength and reliability, often preferred by racers, restorers, and enthusiasts seeking a balance between performance and longevity. Each bearing is **pre-lubricated with a high-temperature, anti-seize compound** to ensure smooth installation and reduce friction during break-in, while its **snap-in design** allows for easy and secure mounting without the need for specialized tools. Whether installed in a classic Ford 351 Cleveland, a Chevy 396, or a modern turbocharged V8, this bearing excels in high-stress applications, including forced induction setups, high-RPM drag racing, and daily drivers pushing beyond factory limits. Built to withstand extreme pressures and temperatures, the **9108859** is a trusted upgrade for those who demand precision engineering and dependable performance in their engine builds.

**Pros and Cons of buying a Clevite 9108859 H-Series (1969-Up) Rod Bearings**

The Clevite 9108859 H-Series rod bearings are a popular choice for high-performance and stock applications in engines from 1969 and later, particularly in small-block Chevrolet engines. Below is a detailed breakdown of their advantages and disadvantages.

### **Pros**

1. **High Performance and Durability**

The H-Series bearings are designed for increased load capacity and durability compared to standard bearings. They are made with a hardened steel shell and a high-quality aluminum alloy backing, which helps resist wear and deformation under heavy stress. This makes them suitable for forced induction (turbocharged or supercharged) applications, high-RPM engines, and aggressive driving conditions.

2. **Compatibility with a Wide Range of Engines**

These bearings are specifically engineered for small-block Chevrolet engines from 1969 and later, including popular models like the 350, 396, and 454 cubic inch engines. They fit standard rod journal sizes and are often used in both stock and modified applications, including those with forged internals or aftermarket crankshafts.

3. **Heat Resistance**

The H-Series bearings are formulated to handle higher operating temperatures better than standard bearings. This is beneficial for engines running at elevated RPMs or under heavy loads, reducing the risk of premature failure due to heat-related wear.

4. **Oil Retention and Lubrication**

The design of these bearings includes features that help retain oil, ensuring better lubrication of the rod journals. This reduces friction and wear, contributing to longer engine life, especially in high-stress scenarios.

5. **Widely Available and Trusted Brand**

Clevite is a well-established brand in the automotive aftermarket, known for producing reliable bearings and engine components. These bearings are easy to find in most auto parts stores, online retailers, and through specialty performance shops. Their reputation for quality makes them a go-to choice for many mechanics and DIY enthusiasts.

6. **Cost-Effective for Performance Applications**

While they are more expensive than standard bearings, the H-Series bearings offer a balance between cost and performance. They are often more affordable than premium or custom bearings designed for extreme applications, making them a practical choice for enthusiasts who want to upgrade without breaking the bank.

7. **Backed by Technical Support and Warranty**

Clevite provides technical resources, including installation guides and compatibility charts, to help users select the right bearings for their engine. Many retailers also offer warranties or return policies, which can provide peace of mind when making a purchase.

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### **Cons**

1. **Higher Cost Than Standard Bearings**

The primary drawback of the Clevite 9108859 H-Series bearings is their price, which is significantly higher than that of standard rod bearings. For example, a set of standard rod bearings for a small-block Chevy might cost around $20 $40, whereas the H-Series bearings can range from $80 to $150 or more, depending on the retailer and quantity. This can be a significant investment for budget-conscious buyers.

2. **Not Suitable for Extreme High-Performance Applications**

While the H-Series bearings are robust, they are not designed for the most extreme high-performance applications, such as those involving extreme forced induction (e.g., 20 psi turbocharging), extreme nitrous oxide use, or racing at very high RPMs for prolonged periods. For such applications, bearings with even higher load capacities (e.g., Clevite s X or XX Series or brands like Fel-Pro or Moroso) may be necessary.

3. **Requires Proper Installation and Break-In**

Like all high-performance bearings, the H-Series bearings perform best when installed correctly and given a proper break-in period. Improper installation, such as incorrect gap settings or failure to follow torque specifications, can lead to premature failure. Additionally, the break-in process (e.g., avoiding full throttle until the oil has circulated properly) is critical to maximizing their lifespan.

4. **Potential for Overkill in Stock or Mildly Modified Engines**

For engines that are running stock or with only mild modifications (e.g., a mild turbo or supercharger), the H-Series bearings may offer little to no benefit over standard bearings. In such cases, the higher cost may not be justified unless the engine is subjected to heavy loads or high RPMs regularly.

5. **Limited Availability of Replacement Parts**

While the bearings themselves are widely available, finding replacement parts (e.g., seals, gaskets, or specific tools) for installation can sometimes be challenging, depending on the region or retailer. This is not unique to Clevite but is a general consideration when upgrading engine components.

6. **Compatibility with Aftermarket Crankshafts May Vary**

While these bearings are designed for stock and many aftermarket crankshafts, there may be specific models or custom cranks that require alternative bearings. It s essential to verify compatibility with the crankshaft manufacturer s recommendations to avoid issues.

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### **Conclusion**

The Clevite 9108859 H-Series rod bearings are an excellent choice for enthusiasts looking to upgrade their small-block Chevrolet engines (1969 and later) with a balance of performance, durability, and reliability. They excel in applications involving forced induction, high RPMs, or aggressive driving, offering superior load capacity and heat resistance compared to standard bearings. Their compatibility with a wide range of engines and the backing of a trusted brand further enhance their appeal.

However, the higher cost relative to standard bearings and the fact that they may not be necessary for stock or mildly modified engines are significant drawbacks. Additionally, they are not suitable for the most extreme high-performance applications without further upgrades. Proper installation and break-in are critical to ensuring their longevity.

### **Recommendation**

If you are running a small-block Chevy engine in a performance application such as a turbocharged or supercharged setup, a high-RPM street/strip application, or a modified engine with aggressive driving habits the Clevite 9108859 H-Series bearings are a strong recommendation. They provide a cost-effective upgrade that significantly enhances durability and performance without requiring extreme modifications.

For stock or mildly modified engines, standard bearings may suffice, and the additional cost of the H-Series bearings may not be justified. In cases where the engine is subjected to very high loads (e.g., extreme turbocharging, racing, or nitrous use), consider upgrading to even higher-performance bearings (e.g., Clevite X or XX Series) for optimal results.

Always verify compatibility with your specific engine components, follow the manufacturer s installation guidelines, and ensure proper break-in procedures to maximize the lifespan of these bearings. If in doubt, consult with a trusted mechanic or performance specialist to determine the best bearing solution for your application.

Details:

Headquarters. Contact pattern should ideally cover 2/3 to 3/4 of the bearing surface. These sets are specifically for 1969-Up 302-305-327-350 S/B Chevy Large Journal engines with 2.100 rod journals. Part # 9108859 Condition New Brand Clevite Sold Kit Details Clevite H-Series was developed primarily for use in NASCAR type racing, but they are suitable all types of competition engines.

Use H-series bearings with crankshafts that have oversize fillet's and where engines run in the medium to high RPM range. H-Series bearings should be used if contact patterns obtained with P-series parts are too narrow. Specs Bearing Undersized Standard Construction Teri-metal Sold in Quantity Kit Narrowed Yes MFG. Yes, I recommend this product.

part #: 9108859 price

  • $187.99

specifications cranshafengin:

  • brand: Clevite
  • mpn: 9108859
  • part type: Bearing Rod
  • california prop 65 warning: False

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shipping cranshafengin:

  • type: Fixed
  • class: Economy, Expedited
  • service: Economy, Expedited
  • cost: $13.99
  • transit: 4-4 Days

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  • rating: 99.8%
  • city: Lincoln, NE
  • # reviews: 367672

general cranshafengin:

  • Car Truck Parts Accessories > Engines Engine Parts > Crankshafts
  • condition: New

offer cranshafengin:

  • availability: In Stock
  • options: Ship-to-home
  • sold: 0
  • started: May 31, 2026

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  • paid by: Seller
  • policy: Returns Accepted
  • time: 30 Days
part type: bearing rod, california prop 65 warning: false,
category: auto parts > car truck parts accessories > engines engine parts > crankshafts, sku: 20641723030301008,
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1 offer $187.99 USD
  • New. Offer #1 priced at $187.99 + $13.99 shipping estimate = $201.98* total. Contact pattern should ideally cover 2/3 to 3/4 of the bearing surface Clevite's H-Series was developed primarily for use in NASCAR type racing, but they are suitable for all types of competition engines.+$13.99 shipping

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